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Shi X, El Hassan N, Ikni A, Li W, Guiblin N, Spasojević de-Biré A, Ghermani NE. Experimental electron densities of neutral and zwitterionic forms of the drug piroxicam. CrystEngComm 2016. [DOI: 10.1039/c5ce02397a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electron and electrostatic properties of piroxicam (PX) were derived from high resolution X-ray diffraction experiments carried out at 100 K.
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Affiliation(s)
- X. Shi
- Laboratoire Structures
- Propriétés et Modélisation des Solides
- Université Paris Saclay
- CentraleSupélec, UMR CNRS 8580
- 92295 Châtenay-Malabry, France
| | - N. El Hassan
- Laboratoire Structures
- Propriétés et Modélisation des Solides
- Université Paris Saclay
- CentraleSupélec, UMR CNRS 8580
- 92295 Châtenay-Malabry, France
| | - A. Ikni
- Laboratoire Structures
- Propriétés et Modélisation des Solides
- Université Paris Saclay
- CentraleSupélec, UMR CNRS 8580
- 92295 Châtenay-Malabry, France
| | - W. Li
- Laboratoire Structures
- Propriétés et Modélisation des Solides
- Université Paris Saclay
- CentraleSupélec, UMR CNRS 8580
- 92295 Châtenay-Malabry, France
| | - N. Guiblin
- Laboratoire Structures
- Propriétés et Modélisation des Solides
- Université Paris Saclay
- CentraleSupélec, UMR CNRS 8580
- 92295 Châtenay-Malabry, France
| | - A. Spasojević de-Biré
- Laboratoire Structures
- Propriétés et Modélisation des Solides
- Université Paris Saclay
- CentraleSupélec, UMR CNRS 8580
- 92295 Châtenay-Malabry, France
| | - N. E. Ghermani
- Laboratoire Structures
- Propriétés et Modélisation des Solides
- Université Paris Saclay
- CentraleSupélec, UMR CNRS 8580
- 92295 Châtenay-Malabry, France
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Janolin PE, Anokhin AS, Gui Z, Mukhortov VM, Golovko YI, Guiblin N, Ravy S, El Marssi M, Yuzyuk YI, Bellaiche L, Dkhil B. Strain engineering of perovskite thin films using a single substrate. J Phys Condens Matter 2014; 26:292201. [PMID: 24961271 DOI: 10.1088/0953-8984/26/29/292201] [Citation(s) in RCA: 1] [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] [Indexed: 06/03/2023]
Abstract
Combining temperature-dependent x-ray diffraction, Raman spectroscopy and first-principles-based effective Hamiltonian calculations, we show that varying the thickness of (Ba0.8Sr0.2)TiO3 (BST) thin films deposited on the same single substrate (namely, MgO) enables us to change not only the magnitude but also the sign of the misfit strain. Such previously overlooked control of the strain allows several properties of these films (e.g. Curie temperature, symmetry of ferroelectric phases, dielectric response) to be tuned and even optimized. Surprisingly, such desired control of the strain (and of the resulting properties) originates from an effect that is commonly believed to be detrimental to functionalities of films, namely the existence of misfit dislocations. The present study therefore provides a novel route to strain engineering, as well as leading us to revisit common beliefs.
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Affiliation(s)
- P-E Janolin
- Laboratoire Structures, Propriétés et Modélisation des Solides, UMR CNRS-École Centrale Paris, Grande Voie des Vignes, 92295 Châtenay-Malabry Cedex, France
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Cherifi RO, Ivanovskaya V, Phillips LC, Zobelli A, Infante IC, Jacquet E, Garcia V, Fusil S, Briddon PR, Guiblin N, Mougin A, Ünal AA, Kronast F, Valencia S, Dkhil B, Barthélémy A, Bibes M. Electric-field control of magnetic order above room temperature. Nat Mater 2014; 13:345-351. [PMID: 24464245 DOI: 10.1038/nmat3870] [Citation(s) in RCA: 121] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Accepted: 12/18/2013] [Indexed: 06/03/2023]
Abstract
Controlling magnetism by means of electric fields is a key issue for the future development of low-power spintronics. Progress has been made in the electrical control of magnetic anisotropy, domain structure, spin polarization or critical temperatures. However, the ability to turn on and off robust ferromagnetism at room temperature and above has remained elusive. Here we use ferroelectricity in BaTiO3 crystals to tune the sharp metamagnetic transition temperature of epitaxially grown FeRh films and electrically drive a transition between antiferromagnetic and ferromagnetic order with only a few volts, just above room temperature. The detailed analysis of the data in the light of first-principles calculations indicate that the phenomenon is mediated by both strain and field effects from the BaTiO3. Our results correspond to a magnetoelectric coupling larger than previous reports by at least one order of magnitude and open new perspectives for the use of ferroelectrics in magnetic storage and spintronics.
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Affiliation(s)
- R O Cherifi
- 1] Unité Mixte de Physique CNRS/Thales, 1 av. Fresnel, 91767 Palaiseau & Université Paris-Sud, Orsay 91405, France [2]
| | - V Ivanovskaya
- Unité Mixte de Physique CNRS/Thales, 1 av. Fresnel, 91767 Palaiseau & Université Paris-Sud, Orsay 91405, France
| | - L C Phillips
- Unité Mixte de Physique CNRS/Thales, 1 av. Fresnel, 91767 Palaiseau & Université Paris-Sud, Orsay 91405, France
| | - A Zobelli
- Laboratoire de Physique des Solides, Université Paris-Sud, CNRS UMR 8502, Orsay 91405, France
| | - I C Infante
- Laboratoire SPMS, UMR 8580, Ecole Centrale Paris-CNRS, Grande voie des vignes, Châtenay-Malabry 92290, France
| | - E Jacquet
- Unité Mixte de Physique CNRS/Thales, 1 av. Fresnel, 91767 Palaiseau & Université Paris-Sud, Orsay 91405, France
| | - V Garcia
- Unité Mixte de Physique CNRS/Thales, 1 av. Fresnel, 91767 Palaiseau & Université Paris-Sud, Orsay 91405, France
| | - S Fusil
- 1] Unité Mixte de Physique CNRS/Thales, 1 av. Fresnel, 91767 Palaiseau & Université Paris-Sud, Orsay 91405, France [2] Université d'Evry-Val d'Essonne, Bd. F. Mitterrand, Evry cedex 91025, France
| | - P R Briddon
- School of Electrical and Electronic Engineering, University of Newcastle, Newcastle upon Tyne, NE 1 7RU, UK
| | - N Guiblin
- Laboratoire SPMS, UMR 8580, Ecole Centrale Paris-CNRS, Grande voie des vignes, Châtenay-Malabry 92290, France
| | - A Mougin
- Laboratoire de Physique des Solides, Université Paris-Sud, CNRS UMR 8502, Orsay 91405, France
| | - A A Ünal
- Helmholtz-Zentrum Berlin für Materialen und Energie, Albert-Einstein-Strasse 15, Berlin 12489, Germany
| | - F Kronast
- Helmholtz-Zentrum Berlin für Materialen und Energie, Albert-Einstein-Strasse 15, Berlin 12489, Germany
| | - S Valencia
- Helmholtz-Zentrum Berlin für Materialen und Energie, Albert-Einstein-Strasse 15, Berlin 12489, Germany
| | - B Dkhil
- Laboratoire SPMS, UMR 8580, Ecole Centrale Paris-CNRS, Grande voie des vignes, Châtenay-Malabry 92290, France
| | - A Barthélémy
- Unité Mixte de Physique CNRS/Thales, 1 av. Fresnel, 91767 Palaiseau & Université Paris-Sud, Orsay 91405, France
| | - M Bibes
- Unité Mixte de Physique CNRS/Thales, 1 av. Fresnel, 91767 Palaiseau & Université Paris-Sud, Orsay 91405, France
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Guiblin N, Fuhrer C, Häner R, Stoeckli-Evans H, Schenk K, Chapuis G. The organic modulated structure of 3,4-diphenyl-2a,5a,6,7,8,8a,8b-heptahydro-furo[4,3,2- de]chromen-2-one. Acta Crystallogr A 2006. [DOI: 10.1107/s010876730609636x] [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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Pérez O, Grebille D, Guiblin N, Beran P, Martin C, Hervieu M, Retoux R. Modulated charge or orbital ordering in two-dimensional or three-dimensional manganites. Acta Crystallogr A 2004. [DOI: 10.1107/s0108767304099295] [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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Simon C, Mercone S, Guiblin N, Martin C, Brûlet A, André G. Microphase separation in Pr0.67Ca0.33MnO3 by small-angle neutron scattering. Phys Rev Lett 2002; 89:207202. [PMID: 12443503 DOI: 10.1103/physrevlett.89.207202] [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: 04/29/2002] [Indexed: 05/24/2023]
Abstract
We have evidenced by small-angle neutron scattering at low temperature the coexistence of ferromagnetism (F) and antiferromagnetism (AF) in Pr0.67Ca0.33MnO3. The results are compared to those obtained in Pr0.80Ca0.20MnO3 and Pr0.63Ca0.37MnO3, which are F and AF, respectively. Quantitative analysis shows that the small-angle scattering is not due to a mesoscopic mixing but to a nanoscopic electronic and magnetic "red cabbage" structure, in which the ferromagnetic phase exists in the form of thin layers in the AF matrix (stripes or 2D "sheets").
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Affiliation(s)
- Ch Simon
- Laboratoire CRISMAT, Unité Mixte de Recherches 6508, Institut des Sciences de la Matière et du Rayonnement - Université de Caen, 6 Boulevard du Maréchal Juin, 14050 Caen Cedex, France
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