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Chen K, Luo C, Zhao Y, Baudelet F, Maurya A, Thamizhavel A, Rößler UK, Makarov D, Radu F. Evidence of the Anomalous Fluctuating Magnetic State by Pressure-Driven 4f Valence Change in EuNiGe 3. J Phys Chem Lett 2023; 14:1000-1006. [PMID: 36693119 PMCID: PMC9900636 DOI: 10.1021/acs.jpclett.2c03569] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 01/19/2023] [Indexed: 06/17/2023]
Abstract
In rare-earth compounds with valence fluctuation, the proximity of the 4f level to the Fermi energy leads to instabilities of the charge configuration and the magnetic moment. Here, we provide direct experimental evidence for an induced magnetic polarization of the Eu3+ atomic shell with J = 0, due to intra-atomic exchange and spin-orbital coupling interactions with the Eu2+ atomic shell. By applying external pressure, a transition from antiferromagnetic to a fluctuating behavior in EuNiGe3 single crystals is probed. Magnetic polarization is observed for both valence states of Eu2+ and Eu3+ across the entire pressure range. The anomalous magnetism is discussed in terms of a homogeneous intermediate valence state where frustrated Dzyaloshinskii-Moriya couplings are enhanced by the onset of spin-orbital interaction and engender a chiral spin-liquid-like precursor.
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Affiliation(s)
- K. Chen
- National
Synchrotron Radiation Laboratory, University
of Science and Technology of China, Hefei 230026, Anhui, China
| | - C. Luo
- Helmholtz-Zentrum
Berlin für Materialien und Energie, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
| | - Y. Zhao
- Center
for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai 201203, China
| | - F. Baudelet
- Synchrotron
SOLEIL, L’Orme des Merisiers, Saint-Aubin-BP48, 91192 GIF-sur-Yvette, France
| | - A. Maurya
- Department
of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Colaba, Mumbai 400005, India
| | - A. Thamizhavel
- Department
of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Colaba, Mumbai 400005, India
| | - U. K. Rößler
- Leibniz-Institut
für Festkörper- und Werkstoffforschung Dresden e. V.
(IFW Dresden), 01069 Dresden, Germany
| | - D. Makarov
- Helmholtz-Zentrum
Dresden-Rossendorf e.V., Institute of Ion Beam Physics and Materials
Research, 01328 Dresden, Germany
| | - F. Radu
- Helmholtz-Zentrum
Berlin für Materialien und Energie, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
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2
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Ramos SM, Hering EN, Lapertot G, Wilhelm F, Rogalev A, Baudelet F, Braithwaite D. XMCD measurements under pressure confirm ferromagnetism in YbCu2Si2but find none in YbRh2Si2. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/1742-6596/592/1/012015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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3
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Monza A, Meffre A, Baudelet F, Rueff JP, d'Astuto M, Munsch P, Huotari S, Lachaize S, Chaudret B, Shukla A. Iron under pressure: "Kohn tweezers" and remnant magnetism. Phys Rev Lett 2011; 106:247201. [PMID: 21770592 DOI: 10.1103/physrevlett.106.247201] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Indexed: 05/31/2023]
Abstract
In this work we investigate the magnetic and structural properties of bulk Fe and Fe nanoparticles under pressure with x-ray absorption and emission spectroscopies providing answers to two fundamental questions: (a) the chicken-or-egg problem for the magnetic and structural transitions and (b) magnetism in the high pressure hcp phase. The two transitions, inextricably linked in the bulk, are clearly decoupled in the nanoparticles, with the magnetic collapse preceding the structural transition. Ultrafast x-ray emission spectroscopy detects remnant magnetism, probably antiferromagnetic fluctuations, up to pressures of about 40 GPa in the hcp phase. This could be of direct relevance to the superconductivity in ϵ-Fe [K. Shimizu et al., Nature (London) 412, 316 (2001)] through the existence of a quantum critical point and associated magnetic fluctuations.
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Affiliation(s)
- A Monza
- Université Pierre et Marie Curie, IMPMC, CNRS UMR7590, Paris, France
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4
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Rueff JP, Raymond S, Taguchi M, Sikora M, Itié JP, Baudelet F, Braithwaite D, Knebel G, Jaccard D. Pressure-induced valence crossover in superconducting CeCu2Si2. Phys Rev Lett 2011; 106:186405. [PMID: 21635111 DOI: 10.1103/physrevlett.106.186405] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2011] [Indexed: 05/30/2023]
Abstract
Measurement of the Ce valence in the heavy fermion CeCu(2)Si(2) is reported for the first time under pressure and at low temperature (T=14 K) in proximity of the superconducting region. CeCu(2)Si(2) is considered as a strong candidate for a new type of pairing mechanism related to critical valence fluctuations which could set in at high pressure in the vicinity of the second superconducting dome. A quantitative estimate of the valence in this pressure region was achieved from the measurements of the Ce L(3) edge in the high-resolution partial-fluorescence yield mode and subsequent analysis of the spectra within the Anderson impurity model. While a clear increase of the Ce valence is found, the weak electron transfer and the continuous valence change under pressure suggests a crossover regime with the hypothetical valence line terminating at a critical end point T(cr) close to zero.
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Affiliation(s)
- J-P Rueff
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, France
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5
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Durmeyer O, Beaurepaire E, Kappler JP, Brouder C, Baudelet F. Temperature dependence of the pre-edge structure in the Ti K-edge x-ray absorption spectrum of rutile. J Phys Condens Matter 2010; 22:125504. [PMID: 21389491 DOI: 10.1088/0953-8984/22/12/125504] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The temperature dependence of the pre-edge features in x-ray absorption spectroscopy is reviewed. Then, the temperature dependence of the pre-edge structure at the K-edge of titanium in rutile TiO(2) is measured at low and room temperature. The first two peaks grow with temperature. The fact that these two peaks also correspond to electric quadrupole transitions is explained by a recently proposed theory.
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Affiliation(s)
- O Durmeyer
- IPCMS, UMR 7504 CNRS-ULP, 23 rue de Loess, BP 43, F-67034 Strasbourg Cedex 2, France
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6
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Rodolakis F, Hansmann P, Rueff JP, Toschi A, Haverkort MW, Sangiovanni G, Tanaka A, Saha-Dasgupta T, Andersen OK, Held K, Sikora M, Alliot I, Itié JP, Baudelet F, Wzietek P, Metcalf P, Marsi M. Inequivalent routes across the Mott transition in V2O3 explored by X-ray absorption. Phys Rev Lett 2010; 104:047401. [PMID: 20366736 DOI: 10.1103/physrevlett.104.047401] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2009] [Indexed: 05/29/2023]
Abstract
The changes in the electronic structure of V2O3 across the metal-insulator transition induced by temperature, doping, and pressure are identified using high resolution x-ray absorption spectroscopy at the V pre-K edge. Contrary to what has been taken for granted so far, the metallic phase reached under pressure is shown to differ from the one obtained by changing doping or temperature. Using a novel computational scheme, we relate this effect to the role and occupancy of the a{1g} orbitals. This finding unveils the inequivalence of different routes across the Mott transition in V2O3.
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Affiliation(s)
- F Rodolakis
- Laboratoire de Physique des Solides, CNRS-UMR 8502, Université Paris-Sud, F-91405 Orsay, France
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7
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Baudelet F, Mathon O, Itié JP, Polian A, Kappler JP, Pascarelli S. Magnetic and crystallographic characterization of Pt(3)Mn(x)Cr(1-x) by XMCD and x-ray diffraction. J Phys Condens Matter 2009; 21:346003. [PMID: 21715793 DOI: 10.1088/0953-8984/21/34/346003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We have performed XMCD and diffraction measurements on the Pt(3)Mn(x)Cr(1-x) alloy, which show that the magnetization of Pt is independently influenced by the Mn or Cr 3d orbital. We find that the magnetic moment on Pt, and its decomposition into spin and orbital components, is uniquely determined by the relative number of Mn and Cr neighbors. We then investigate the effect of pressure on the magnetization of Pt in the Pt(3)Mn(0.5)Cr(0.5) alloy. Our high pressure data enable us to conclude that at 14 GPa the spin and orbital polarization of the Pt 5d band are augmented by about 70%, with no interaction between them.
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Affiliation(s)
- F Baudelet
- IMPMC, CNRS UMR 7590, Université Pierre et Marie Curie Paris6, 140 rue de Lourmel, 75015 Paris, France. Synchrotron-SOLEIL, L'Orme des Merisiers, 91192 Gif-sur-Yvette, France
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8
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Duman E, Acet M, Wassermann EF, Itié JP, Baudelet F, Mathon O, Pascarelli S. Magnetic instabilities in Fe3C cementite particles observed with Fe K-edge x-ray circular dichroism under pressure. Phys Rev Lett 2005; 94:075502. [PMID: 15783825 DOI: 10.1103/physrevlett.94.075502] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2004] [Indexed: 05/24/2023]
Abstract
The ferromagnetic interstitial iron compound Fe(3)C (cementite) is expected to have Invar properties, whereby a high-moment to low-moment transition should occur when the atomic volume is reduced below a critical value. We, therefore, examine the pressure dependence of the Fe K-edge x-ray magnetic circular dichroism in Fe(3)C at ambient temperature and pressures up to 20 GPa. We find clear evidence for a high-moment to low-moment transition around 10 GPa.
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Affiliation(s)
- E Duman
- Experimentalphysik, Universität Duisburg-Essen, D-47048 Duisburg, Germany
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9
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Mathon O, Baudelet F, Itié JP, Polian A, d'Astuto M, Chervin JC, Pascarelli S. Dynamics of the magnetic and structural alpha-epsilon phase transition in iron. Phys Rev Lett 2004; 93:255503. [PMID: 15697906 DOI: 10.1103/physrevlett.93.255503] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2004] [Indexed: 05/24/2023]
Abstract
We have studied the high-pressure iron bcc to hcp phase transition by simultaneous x-ray magnetic circular dichroism and x-ray absorption spectroscopy with an x-ray energy dispersive spectrometer. The combination of the two techniques allows us to obtain simultaneously information on both the structure and the magnetic state of iron under pressure. The magnetic and structural transitions simultaneously observed are sharp. Both are of first order in agreement with the theoretical prediction. The pressure domain of the transition observed (2.4+/-0.2 GPa) is narrower than that usually cited in the literature (8 GPa). Our data indicate that the magnetic transition slightly precedes the structural one, suggesting that the origin of the instability of the bcc phase in iron with increasing pressure is to be attributed to the effect of pressure on magnetism as predicted by spin-polarized full-potential total energy calculations.
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Affiliation(s)
- O Mathon
- European Synchrotron Radiation Facility, BP 220, 38043 Grenoble CEDEX, France
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10
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Mathon O, Baudelet F, Itié JP, Pasternak S, Polian A, Pascarelli S. XMCD under pressure at the Fe K edge on the energy-dispersive beamline of the ESRF. J Synchrotron Radiat 2004; 11:423-427. [PMID: 15310959 DOI: 10.1107/s0909049504018862] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2004] [Accepted: 08/02/2004] [Indexed: 05/24/2023]
Abstract
The present paper demonstrates the feasibility of X-ray absorption spectroscopy (XAS) and X-ray magnetic circular dichroism (XMCD) at high pressure at the Fe K edge on the ID24 energy-dispersive beamline of the ESRF. In 3d transition metals, performing experiments at the hard X-ray K edge rather than at the magnetically interesting soft X-ray L edges represents the only way to access the high-pressure regime obtainable with diamond anvil cells. The simultaneous availability of a local structure (XAS) and of a magnetic (XMCD) probe on the sample under identical thermodynamical conditions is essential for studying correlations between local structural and magnetic properties. The state-of-the-art theoretical understanding of K-edge XMCD data is briefly summarized, and the set-up of beamline ID24 for high-pressure XMCD experiments is illustrated and the conditions required to perform measurements at the K edges of 3d transition metals are underlined. Finally, two examples of recent high-pressure results at the Fe K edge in pure Fe and Fe3O4 powder are presented.
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Affiliation(s)
- O Mathon
- European Synchrotron Radiation Facility, BP 220, 38043 Grenoble CEDEX, France.
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11
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Itié J, Baudelet F, Campos C, Congeduti A, Couzinet B, D'Astuto M, Munsch P, Polian A. High pressure X-ray absorption spectroscopy: state of the art and future developments. Acta Crystallogr A 2004. [DOI: 10.1107/s0108767304098265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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12
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Champion G, Escax V, Cartier Dit Moulin C, Bleuzen A, Villain F, Baudelet F, Dartyge E, Verdaguer M. Photoinduced ferrimagnetic systems in Prussian blue analogues C(I)xCo4[Fe(CN)6]y (C(I) = alkali cation). 4. Characterization of the ferrimagnetism of the photoinduced metastable state in Rb1.8Co4[Fe(CN)6]3.3-13H2O by K edges X-ray magnetic circular dichroism. J Am Chem Soc 2001; 123:12544-6. [PMID: 11741418 DOI: 10.1021/ja011297j] [Citation(s) in RCA: 104] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In Part 2 of this work, the electronic and local structure of the photoinduced metastable magnetic state of the Prussian blue analogue Rb1.8Co4[Fe(CN)6]3.3-13H2O were characterized. To determine directly the relative orientation of the magnetic moments of Co(II) and Fe(III) ions in the metastable state, and the nature of the exchange interaction between them, we performed X-ray magnetic circular dichroism (XMCD) experiments at the cobalt and iron K edges. We present the first direct experimental evidence of the antiferromagnetic interaction between the cobalt and the iron ions, leading to the ferrimagnetism of the photoinduced metastable state.
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Affiliation(s)
- G Champion
- Laboratoire de Chimie Inorganique et Matériaux Moléculaires, Unité CNRS 7071, Case 42, Université Pierre et Marie Curie, 4 place Jussieu, 75252 Paris Cedex 05, France
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13
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Dujardin E, Ferlay S, Phan X, Desplanches C, Cartier dit Moulin C, Sainctavit P, Baudelet F, Dartyge E, Veillet P, Verdaguer M. Synthesis and Magnetization of New Room-Temperature Molecule-Based Magnets: Effect of Stoichiometry on Local Magnetic Structure by X-ray Magnetic Circular Dichroism J. Am. Chem. Soc. 1998, 120, 11347−11352. J Am Chem Soc 1999. [DOI: 10.1021/ja995518l] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Dujardin E, Ferlay S, Phan X, Desplanches C, Cartier dit Moulin C, Sainctavit P, Baudelet F, Dartyge E, Veillet P, Verdaguer M. Synthesis and Magnetization of New Room-Temperature Molecule-Based Magnets: Effect of Stoichiometry on Local Magnetic Structure by X-ray Magnetic Circular Dichroism. J Am Chem Soc 1998. [DOI: 10.1021/ja974076f] [Citation(s) in RCA: 129] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- E. Dujardin
- Contribution from the Laboratoire de Chimie des Métaux de Transition, URA CNRS 419, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, Laboratoire pour l'Utilisation du Rayonnement Electromagnétique, Bât. 209d, CNRS-CEA-MEN, 91405 Orsay Cedex, France, Laboratoire de Minéralogie et Cristallographie, URA CNRS 9, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, and Institut d'Electronique Fondamentale, URA CNRS 22, Université Paris-Sud, 91405
| | - S. Ferlay
- Contribution from the Laboratoire de Chimie des Métaux de Transition, URA CNRS 419, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, Laboratoire pour l'Utilisation du Rayonnement Electromagnétique, Bât. 209d, CNRS-CEA-MEN, 91405 Orsay Cedex, France, Laboratoire de Minéralogie et Cristallographie, URA CNRS 9, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, and Institut d'Electronique Fondamentale, URA CNRS 22, Université Paris-Sud, 91405
| | - X. Phan
- Contribution from the Laboratoire de Chimie des Métaux de Transition, URA CNRS 419, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, Laboratoire pour l'Utilisation du Rayonnement Electromagnétique, Bât. 209d, CNRS-CEA-MEN, 91405 Orsay Cedex, France, Laboratoire de Minéralogie et Cristallographie, URA CNRS 9, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, and Institut d'Electronique Fondamentale, URA CNRS 22, Université Paris-Sud, 91405
| | - C. Desplanches
- Contribution from the Laboratoire de Chimie des Métaux de Transition, URA CNRS 419, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, Laboratoire pour l'Utilisation du Rayonnement Electromagnétique, Bât. 209d, CNRS-CEA-MEN, 91405 Orsay Cedex, France, Laboratoire de Minéralogie et Cristallographie, URA CNRS 9, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, and Institut d'Electronique Fondamentale, URA CNRS 22, Université Paris-Sud, 91405
| | - C. Cartier dit Moulin
- Contribution from the Laboratoire de Chimie des Métaux de Transition, URA CNRS 419, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, Laboratoire pour l'Utilisation du Rayonnement Electromagnétique, Bât. 209d, CNRS-CEA-MEN, 91405 Orsay Cedex, France, Laboratoire de Minéralogie et Cristallographie, URA CNRS 9, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, and Institut d'Electronique Fondamentale, URA CNRS 22, Université Paris-Sud, 91405
| | - P. Sainctavit
- Contribution from the Laboratoire de Chimie des Métaux de Transition, URA CNRS 419, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, Laboratoire pour l'Utilisation du Rayonnement Electromagnétique, Bât. 209d, CNRS-CEA-MEN, 91405 Orsay Cedex, France, Laboratoire de Minéralogie et Cristallographie, URA CNRS 9, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, and Institut d'Electronique Fondamentale, URA CNRS 22, Université Paris-Sud, 91405
| | - F. Baudelet
- Contribution from the Laboratoire de Chimie des Métaux de Transition, URA CNRS 419, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, Laboratoire pour l'Utilisation du Rayonnement Electromagnétique, Bât. 209d, CNRS-CEA-MEN, 91405 Orsay Cedex, France, Laboratoire de Minéralogie et Cristallographie, URA CNRS 9, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, and Institut d'Electronique Fondamentale, URA CNRS 22, Université Paris-Sud, 91405
| | - E. Dartyge
- Contribution from the Laboratoire de Chimie des Métaux de Transition, URA CNRS 419, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, Laboratoire pour l'Utilisation du Rayonnement Electromagnétique, Bât. 209d, CNRS-CEA-MEN, 91405 Orsay Cedex, France, Laboratoire de Minéralogie et Cristallographie, URA CNRS 9, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, and Institut d'Electronique Fondamentale, URA CNRS 22, Université Paris-Sud, 91405
| | - P. Veillet
- Contribution from the Laboratoire de Chimie des Métaux de Transition, URA CNRS 419, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, Laboratoire pour l'Utilisation du Rayonnement Electromagnétique, Bât. 209d, CNRS-CEA-MEN, 91405 Orsay Cedex, France, Laboratoire de Minéralogie et Cristallographie, URA CNRS 9, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, and Institut d'Electronique Fondamentale, URA CNRS 22, Université Paris-Sud, 91405
| | - M. Verdaguer
- Contribution from the Laboratoire de Chimie des Métaux de Transition, URA CNRS 419, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, Laboratoire pour l'Utilisation du Rayonnement Electromagnétique, Bât. 209d, CNRS-CEA-MEN, 91405 Orsay Cedex, France, Laboratoire de Minéralogie et Cristallographie, URA CNRS 9, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France, and Institut d'Electronique Fondamentale, URA CNRS 22, Université Paris-Sud, 91405
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15
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Pizzini S, Bonfim M, Baudelet F, Tolentino H, San Miguel A, Mackay K, Malgrange C, Hagelstein M, Fontaine A. Quarter-wave plates and X-ray magnetic circular dichroism on ID24 at the ESRF. J Synchrotron Radiat 1998; 5:1298-303. [PMID: 16687837 DOI: 10.1107/s0909049598004154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/1998] [Accepted: 03/16/1998] [Indexed: 05/09/2023]
Abstract
The first XMCD measurements carried out on the ID24 energy-dispersive XAS beamline at the ESRF are reported. Circular-polarized X-rays are obtained using perfect diamond crystals as quarter-wave plates. The very small source divergence allows circular polarizations close to unity to be obtained.
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Affiliation(s)
- S Pizzini
- Laboratoire Louis Néel, CNRS, BP 166, 38042 Grenoble CEDEX, France
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16
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Baudelet F, Dubuisson JM, Hébert C, Créoff C, Pointal L, Andouard R, Odin S, Dartyge E, Krill G, Giorgetti C, Chervin JC, Itié JP, Polian A, Fontaine A, Pizzini S, Kappler JP. Two recent developments in XMCD. J Synchrotron Radiat 1998; 5:992-994. [PMID: 15263722 DOI: 10.1107/s0909049598001642] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/1997] [Accepted: 01/26/1998] [Indexed: 05/24/2023]
Abstract
This paper reports on two new technical developments concerning sample environments for X-ray magnetic circular dichroism (XMCD). The first measurements under high pressures of up to 30 GPa are described. The difficulties of combining the techniques of high pressure and XMCD are commented on. The second development involves the use of a fast-switching magnetic field. A new superconducting device is used to perform XMCD measurements on paramagnetic compounds in magnetic fields of up to 6 T. The small amplitude of the XMCD signal imposes, for a given signal-to-noise ratio, a noise less than a few 10(-5). The signal-to-noise ratio is improved by the use of a series of acquisitions, switching the magnetic field between each acquisition. A very fast switching mechanism has been built based on mechanical rotation of a superconducting coil, with the sample kept in place inside the coil. The XMCD signals at the L(II,III)-edges of paramagnetic rare-earth compounds have been measured at 4.5 K in fields of up to 6 T with a switching time of 11 s.
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Affiliation(s)
- F Baudelet
- LURE, Bâtiment 209d, 91405 Orsay CEDEX, France
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Bonfim M, Mackay K, Pizzini S, San Miguel A, Tolentino H, Giles C, Neisius T, Hagelstein M, Baudelet F, Malgrange C, Fontaine A. Nanosecond-resolved XMCD on ID24 at the ESRF to investigate the element-selective dynamics of magnetization switching of Gd-Co amorphous thin film. J Synchrotron Radiat 1998; 5:750-752. [PMID: 15263641 DOI: 10.1107/s0909049597017809] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/1997] [Accepted: 11/24/1997] [Indexed: 05/24/2023]
Abstract
The one-bunch filling mode of the ESRF is combined with a microcoil to generate a pulsed-magnetic-field pump phased with respect to the probe that is given by the bunch of photons emitted each turn (357 kHz). Nanosecond-resolved X-ray magnetic circular dichroism (XMCD) is carried out. Besides the microcoil, the two other key-elements are the energy-dispersive XAS spectrometer, which yields parallel data acquisition, and the diamond-based quarter-wave plate, which tunes the helicity of the photon alternatively left and right.
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Affiliation(s)
- M Bonfim
- LLN, CNRS, BP 166, 38042 Grenoble CEDEX, France
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Giles C, Malgrange C, Goulon J, de Bergevin F, Vettier C, Fontaine A, Dartyge E, Pizzini S, Baudelet F, Grubel G, Varga L, Freund A. Diamond phase plates for X-ray circular and linear polarimetry at the ESRF. Acta Crystallogr A 1996. [DOI: 10.1107/s0108767396079536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Giorgetti C, Dartyge E, Brouder C, Baudelet F, Meyer C, Pizzini S, Fontaine A, Galéra RM. Quadrupolar effect in X-ray magnetic circular dichroism. Phys Rev Lett 1995; 75:3186-3189. [PMID: 10059516 DOI: 10.1103/physrevlett.75.3186] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Galéra RM, Pizzini S, Blanco JA, Rueff JP, Fontaine A, Giorgetti C, Baudelet F, Dartyge E, López MF. Effects of spin-dependent spectral weight on magnetic circular x-ray dichroism: Applications to R(NixCo1-x)5 intermetallic compounds. Phys Rev B Condens Matter 1995; 51:15957-15963. [PMID: 9978575 DOI: 10.1103/physrevb.51.15957] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Baudelet F, Lin M, Kuch W, Meinel K, Choi B, Schneider CM, Kirschner J. Perpendicular anisotropy and spin reorientation in epitaxial Fe/Cu3Au(100) thin films. Phys Rev B Condens Matter 1995; 51:12563-12578. [PMID: 9978027 DOI: 10.1103/physrevb.51.12563] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Chaboy J, Marcelli A, Bozukov L, Baudelet F, Dartyge E, Fontaine A, Pizzini S. Effect of hydrogen absorption on the cerium electronic state in CeFe11Ti: An x-ray-absorption and circular-magnetic-dichroism investigation. Phys Rev B Condens Matter 1995; 51:9005-9014. [PMID: 9977539 DOI: 10.1103/physrevb.51.9005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Pizzini S, Fontaine A, Giorgetti C, Dartyge E, Bobo JF, Piecuch M, Baudelet F. Evidence for the spin polarization of copper in Co/Cu and Fe/Cu multilayers. Phys Rev Lett 1995; 74:1470-1473. [PMID: 10059028 DOI: 10.1103/physrevlett.74.1470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Klose F, Schulte O, Rose F, Felsch W, Pizzini S, Giorgetti C, Baudelet F, Dartyge E, Krill G, Fontaine A. Interfaces of Ce/Fe and La/Fe multilayers probed by magnetic circular x-ray dichroism. Phys Rev B Condens Matter 1994; 50:6174-6183. [PMID: 9976991 DOI: 10.1103/physrevb.50.6174] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Pizzini S, Fontaine A, Dartyge E, Giorgetti C, Baudelet F, Kappler JP, Boher P, Giron F. Magnetic circular x-ray dichroism measurements of Fe-Co alloys and Fe/Co multilayers. Phys Rev B Condens Matter 1994; 50:3779-3788. [PMID: 9976656 DOI: 10.1103/physrevb.50.3779] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Fischer M, Lahmar A, Maglione M, Itié JP, Polian A, Baudelet F. Local disorder studied in SrTiO3 at low temperature by EXAFS spectroscopy. Phys Rev B Condens Matter 1994; 49:12451-12456. [PMID: 10010145 DOI: 10.1103/physrevb.49.12451] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Giorgetti C, Pizzini S, Dartyge E, Fontaine A, Baudelet F, Brouder C, Bauer P, Krill G, Miraglia S, Fruchart D, Kappler JP. Magnetic circular x-ray dichroism in Ce intermetallic compounds. Phys Rev B Condens Matter 1993; 48:12732-12742. [PMID: 10007644 DOI: 10.1103/physrevb.48.12732] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Dupuis V, Maurer M, Piecuch M, Ravet MF, Dekoster J, Andrieu S, Bobo JF, Baudelet F, Bauer P, Fontaine A. Structure and magnetism of Mn/Ru and Mn/Fe/Mn/Ru superlattices prepared by molecular-beam epitaxy. Phys Rev B Condens Matter 1993; 48:5585-5593. [PMID: 10009076 DOI: 10.1103/physrevb.48.5585] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Pizzini S, Baudelet F, Fontaine A, Galtier M, Renard D, Marlière C. Structure of Co/Cu multilayers studied by x-ray diffraction and x-ray absorption spectroscopy. Phys Rev B Condens Matter 1993; 47:8754-8762. [PMID: 10004920 DOI: 10.1103/physrevb.47.8754] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Baudelet F, Fontaine A, Tourillon G, Guay D, Maurer M, Piecuch M, Ravet MF, Dupuis V. Iron atomic packing in Fe-Ru superlattices by x-ray-absorption spectroscopy. Phys Rev B Condens Matter 1993; 47:2344-2352. [PMID: 10006275 DOI: 10.1103/physrevb.47.2344] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Dartyge E, Fontaine A, Giorgetti C, Pizzini S, Baudelet F, Krill G, Brouder C, Kappler J. Multielectron excitations in rare-earth compounds revealed by magnetic circular x-ray dichroism. Phys Rev B Condens Matter 1992; 46:3155-3158. [PMID: 10004022 DOI: 10.1103/physrevb.46.3155] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Pizzini S, Baudelet F, Chandesris D, Fontaine A, Magnan H, George JM, Petroff F, Barthélemy A, Fert A, Loloee R, Schroeder PA. Structural characterization of Fe/Cu multilayers by x-ray absorption spectroscopy. Phys Rev B Condens Matter 1992; 46:1253-1256. [PMID: 10003328 DOI: 10.1103/physrevb.46.1253] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Tolentino H, Medarde M, Fontaine A, Baudelet F, Dartyge E, Guay D, Tourillon G. Anisotropy of the core-hole relaxation in x-ray-absorption spectroscopy as probed in square planar cuprates. Phys Rev B Condens Matter 1992; 45:8091-8096. [PMID: 10000620 DOI: 10.1103/physrevb.45.8091] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Baudelet F, Dartyge E, Fontaine A, Brouder C, Krill G, Kappler JP, Piecuch M. Magnetic properties of neodynium atoms in Nd-Fe multilayers studied by magnetic x-ray dichroism on Nd LII and Fe K edges. Phys Rev B Condens Matter 1991; 43:5857-5866. [PMID: 9997987 DOI: 10.1103/physrevb.43.5857] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Baudelet F, Collin G, Dartyge E, Fontaine A, Kappler JP, Krill G, Itie JP, Jegoudez J, Maurer M, Monod P, Revcolevschi A, Tolentino H, Tourillon G, Verdaguer M. X-ray absorption spectroscopy of the 90K superconductor YBa2Cu3O7?? ACTA ACUST UNITED AC 1987. [DOI: 10.1007/bf01307269] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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