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Ito T, Xu X, Miyake A, Kinoshita Y, Nagasako M, Takahashi K, Omori T, Tokunaga M, Kainuma R. Pd 2 MnGa Metamagnetic Shape Memory Alloy with Small Energy Loss. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2207779. [PMID: 37309306 PMCID: PMC10427369 DOI: 10.1002/advs.202207779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 05/02/2023] [Indexed: 06/14/2023]
Abstract
Metamagnetic shape memory alloys (MMSMAs) are attractive functional materials owing to their unique properties such as magnetostrain, magnetoresistance, and the magnetocaloric effect caused by magnetic-field-induced transitions. However, the energy loss during the martensitic transformation, that is, the dissipation energy, Edis , is sometimes large for these alloys, which limits their applications. In this paper, a new Pd2 MnGa Heusler-type MMSMA with an extremely small Edis and hysteresis is reported. The microstructures, crystal structures, magnetic properties, martensitic transformations, and magnetic-field-induced strain of aged Pd2 MnGa alloys are investigated. A martensitic transformation from L21 to 10M structures is seen at 127.4 K with a small thermal hysteresis of 1.3 K. The reverse martensitic transformation is induced by applying a magnetic field with a small Edis (= 0.3 J mol-1 only) and a small magnetic-field hysteresis (= 7 kOe) at 120 K. The low values of Edis and the hysteresis may be attributed to good lattice compatibility in the martensitic transformation. A large magnetic-field-induced strain of 0.26% is recorded, indicating the proposed MMSMA's potential as an actuator. The Pd2 MnGa alloy with low values of Edis and hysteresis may enable new possibilities for high-efficiency MMSMAs.
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Affiliation(s)
- Tatsuya Ito
- Department of Materials ScienceGraduate School of EngineeringTohoku UniversityAoba‐yama 6‐6‐02Sendai980‐8579Japan
- Present address:
J‐PARC CenterJapan Atomic Energy AgencyShirakata 2‐4Tokai319‐1195Japan
| | - Xiao Xu
- Department of Materials ScienceGraduate School of EngineeringTohoku UniversityAoba‐yama 6‐6‐02Sendai980‐8579Japan
- Organization for Advanced StudiesTohoku UniversityKatahira 2‐1‐1Sendai980‐8577Japan
| | - Atsushi Miyake
- The Institute for Solid State PhysicsThe University of TokyoKashiwanoha 5‐1‐5Kashiwa277‐8581Japan
- Present address:
Institute for Materials ResearchTohoku UniversityKatahira 2‐1‐1Sendai980‐8577Japan
| | - Yuto Kinoshita
- The Institute for Solid State PhysicsThe University of TokyoKashiwanoha 5‐1‐5Kashiwa277‐8581Japan
| | - Makoto Nagasako
- Institute for Materials ResearchTohoku UniversityKatahira 2‐1‐1Sendai980‐8577Japan
| | - Kohki Takahashi
- Institute for Materials ResearchTohoku UniversityKatahira 2‐1‐1Sendai980‐8577Japan
| | - Toshihiro Omori
- Department of Materials ScienceGraduate School of EngineeringTohoku UniversityAoba‐yama 6‐6‐02Sendai980‐8579Japan
| | - Masashi Tokunaga
- The Institute for Solid State PhysicsThe University of TokyoKashiwanoha 5‐1‐5Kashiwa277‐8581Japan
| | - Ryosuke Kainuma
- Department of Materials ScienceGraduate School of EngineeringTohoku UniversityAoba‐yama 6‐6‐02Sendai980‐8579Japan
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2
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Kinoshita Y, Miyakawa T, Xu X, Tokunaga M. Long-distance polarizing microscope system combined with solenoid-type magnet for microscopy and simultaneous measurement of physical parameters. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2022; 93:073702. [PMID: 35922319 DOI: 10.1063/5.0094747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 06/17/2022] [Indexed: 06/15/2023]
Abstract
We have developed a long-distance polarizing microscope system combined with a solenoid-type superconducting magnet. By inserting an infinity-corrected objective lens into the magnet, direct or polarizing microscope images are observed in magnetic fields of up to 12 T at various temperatures down to 2 K. Through magneto-optical measurements in the transmission geometry, the local magnetization process of a transparent magnet is evaluated in areas of 10 × 10 µm2. This system enables simultaneous measurements of other physical properties over a wide range of temperatures and magnetic fields. The basic principle of the proposed long-distance microscopy can be applied to imaging experiments in various research fields, particularly biology and chemistry.
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Affiliation(s)
- Y Kinoshita
- The Institute for Solid State Physics, The University of Tokyo, Chiba 277-8581, Japan
| | - T Miyakawa
- Department of Materials Science, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - X Xu
- Department of Materials Science, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - M Tokunaga
- The Institute for Solid State Physics, The University of Tokyo, Chiba 277-8581, Japan
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Arai Y, Kuroda K, Nomoto T, Tin ZH, Sakuragi S, Bareille C, Akebi S, Kurokawa K, Kinoshita Y, Zhang WL, Shin S, Tokunaga M, Kitazawa H, Haga Y, Suzuki HS, Miyasaka S, Tajima S, Iwasa K, Arita R, Kondo T. Multipole polaron in the devil's staircase of CeSb. NATURE MATERIALS 2022; 21:410-415. [PMID: 35145257 DOI: 10.1038/s41563-021-01188-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 12/10/2021] [Indexed: 06/14/2023]
Abstract
Rare-earth intermetallic compounds exhibit rich phenomena induced by the interplay between localized f orbitals and conduction electrons. However, since the energy scale of the crystal-electric-field splitting is only a few millielectronvolts, the nature of the mobile electrons accompanied by collective crystal-electric-field excitations has not been unveiled. Here, we examine the low-energy electronic structures of CeSb through the anomalous magnetostructural transitions below the Néel temperature, ~17 K, termed the 'devil's staircase', using laser angle-resolved photoemission, Raman and neutron scattering spectroscopies. We report another type of electron-boson coupling between mobile electrons and quadrupole crystal-electric-field excitations of the 4f orbitals, which renormalizes the Sb 5p band prominently, yielding a kink at a very low energy (~7 meV). This coupling strength is strong and exhibits anomalous step-like enhancement during the devil's staircase transition, unveiling a new type of quasiparticle, named the 'multipole polaron', comprising a mobile electron dressed with a cloud of the quadrupole crystal-electric-field polarization.
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Affiliation(s)
- Y Arai
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - Kenta Kuroda
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan.
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashihiroshima, Japan.
| | - T Nomoto
- Department of Applied Physics, The University of Tokyo, Tokyo, Japan
| | - Z H Tin
- Department of Physics, Osaka University, Toyonaka, Japan
| | - S Sakuragi
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - C Bareille
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - S Akebi
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - K Kurokawa
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - Y Kinoshita
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - W-L Zhang
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
- Department of Engineering and Applied Sciences, Sophia University, Tokyo, Japan
| | - S Shin
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
- Office of University Professor, The University of Tokyo, Kashiwa, Japan
| | - M Tokunaga
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
- Trans-scale Quantum Science Institute, The University of Tokyo, Tokyo, Japan
| | - H Kitazawa
- National Institute for Materials Science, Tsukuba, Japan
| | - Y Haga
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Japan
| | - H S Suzuki
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - S Miyasaka
- Department of Physics, Osaka University, Toyonaka, Japan
| | - S Tajima
- Department of Physics, Osaka University, Toyonaka, Japan
| | - K Iwasa
- Frontier Research Center for Applied Atomic Sciences and Institute of Quantum Beam Science, Ibaraki University, Tokai, Japan
| | - R Arita
- Department of Applied Physics, The University of Tokyo, Tokyo, Japan
- RIKEN Center for Emergent Matter Science (CEMS), Wako, Japan
| | - Takeshi Kondo
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
- Trans-scale Quantum Science Institute, The University of Tokyo, Tokyo, Japan
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Mitamura H, Watanuki R, Kampert E, Förster T, Matsuo A, Onimaru T, Onozaki N, Amou Y, Wakiya K, Matsumoto KT, Yamamoto I, Suzuki K, Zherlitsyn S, Wosnitza J, Tokunaga M, Kindo K, Sakakibara T. Improved accuracy in high-frequency AC transport measurements in pulsed high magnetic fields. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:125107. [PMID: 33379936 DOI: 10.1063/5.0014986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 10/27/2020] [Indexed: 06/12/2023]
Abstract
We show theoretically and experimentally that accurate transport measurements are possible even within the short time provided by pulsed magnetic fields. For this purpose, a new method has been devised, which removes the noise component of a specific frequency from the signal by taking a linear combination of the results of numerical phase detection using multiple integer periods. We also established a method to unambiguously determine the phase rotation angle in AC transport measurements using a frequency range of tens of kilohertz. We revealed that the dominant noise in low-frequency transport measurements in pulsed magnetic fields is the electromagnetic induction caused by mechanical vibrations of wire loops in inhomogeneous magnetic fields. These results strongly suggest that accurate transport measurements in short-pulsed magnets are possible when mechanical vibrations are well suppressed.
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Affiliation(s)
- Hiroyuki Mitamura
- Institute for Solid State Physics, The University of Tokyo, Kashiwa 277-8581, Japan
| | - Ryuta Watanuki
- Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan
| | - Erik Kampert
- Hochfeld-Magnetlabor Dresden (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Tobias Förster
- Hochfeld-Magnetlabor Dresden (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Akira Matsuo
- Institute for Solid State Physics, The University of Tokyo, Kashiwa 277-8581, Japan
| | - Takahiro Onimaru
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
| | - Norimichi Onozaki
- Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan
| | - Yuta Amou
- Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan
| | - Kazuhei Wakiya
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
| | - Keisuke T Matsumoto
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
| | - Isao Yamamoto
- Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan
| | - Kazuya Suzuki
- Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan
| | - Sergei Zherlitsyn
- Hochfeld-Magnetlabor Dresden (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Joachim Wosnitza
- Hochfeld-Magnetlabor Dresden (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Masashi Tokunaga
- Institute for Solid State Physics, The University of Tokyo, Kashiwa 277-8581, Japan
| | - Koichi Kindo
- Institute for Solid State Physics, The University of Tokyo, Kashiwa 277-8581, Japan
| | - Toshiro Sakakibara
- Institute for Solid State Physics, The University of Tokyo, Kashiwa 277-8581, Japan
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5
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Kuroda K, Arai Y, Rezaei N, Kunisada S, Sakuragi S, Alaei M, Kinoshita Y, Bareille C, Noguchi R, Nakayama M, Akebi S, Sakano M, Kawaguchi K, Arita M, Ideta S, Tanaka K, Kitazawa H, Okazaki K, Tokunaga M, Haga Y, Shin S, Suzuki HS, Arita R, Kondo T. Devil's staircase transition of the electronic structures in CeSb. Nat Commun 2020; 11:2888. [PMID: 32514054 PMCID: PMC7280508 DOI: 10.1038/s41467-020-16707-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 05/15/2020] [Indexed: 12/02/2022] Open
Abstract
Solids with competing interactions often undergo complex phase transitions with a variety of long-periodic modulations. Among such transition, devil's staircase is the most complex phenomenon, and for it, CeSb is the most famous material, where a number of the distinct phases with long-periodic magnetostructures sequentially appear below the Néel temperature. An evolution of the low-energy electronic structure going through the devil's staircase is of special interest, which has, however, been elusive so far despite 40 years of intense research. Here, we use bulk-sensitive angle-resolved photoemission spectroscopy and reveal the devil's staircase transition of the electronic structures. The magnetic reconstruction dramatically alters the band dispersions at each transition. Moreover, we find that the well-defined band picture largely collapses around the Fermi energy under the long-periodic modulation of the transitional phase, while it recovers at the transition into the lowest-temperature ground state. Our data provide the first direct evidence for a significant reorganization of the electronic structures and spectral functions occurring during the devil's staircase.
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Affiliation(s)
- Kenta Kuroda
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan.
| | - Y Arai
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - N Rezaei
- Department of Physics, Isfahan University of Technology, 84156-83111, Isfahan, Iran
| | - S Kunisada
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - S Sakuragi
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - M Alaei
- Department of Physics, Isfahan University of Technology, 84156-83111, Isfahan, Iran
| | - Y Kinoshita
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - C Bareille
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - R Noguchi
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - M Nakayama
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - S Akebi
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - M Sakano
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
- Department of Applied Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - K Kawaguchi
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - M Arita
- Hiroshima Synchrotron Center, Hiroshima University, Higashi-Hiroshima, 739-0046, Japan
| | - S Ideta
- UVSOR Facility, Institute for Molecular Science, Okazaki, 444-8585, Japan
| | - K Tanaka
- UVSOR Facility, Institute for Molecular Science, Okazaki, 444-8585, Japan
| | - H Kitazawa
- National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, 305-0047, Japan
| | - K Okazaki
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - M Tokunaga
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - Y Haga
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
| | - S Shin
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - H S Suzuki
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - R Arita
- Department of Applied Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Takeshi Kondo
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
- Trans-scale Quantum Science Institute, University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
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6
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Infrared nano-spectroscopy of ferroelastic domain walls in hybrid improper ferroelectric Ca 3Ti 2O 7. Nat Commun 2019; 10:5235. [PMID: 31748506 PMCID: PMC6868197 DOI: 10.1038/s41467-019-13066-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 10/07/2019] [Indexed: 02/01/2023] Open
Abstract
Ferroic materials are well known to exhibit heterogeneity in the form of domain walls. Understanding the properties of these boundaries is crucial for controlling functionality with external stimuli and for realizing their potential for ultra-low power memory and logic devices as well as novel computing architectures. In this work, we employ synchrotron-based near-field infrared nano-spectroscopy to reveal the vibrational properties of ferroelastic (90\documentclass[12pt]{minimal}
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\begin{document}$${}^{\circ }$$\end{document}∘ ferroelectric) domain walls in the hybrid improper ferroelectric Ca\documentclass[12pt]{minimal}
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\begin{document}$${}_{7}$$\end{document}7. By locally mapping the Ti-O stretching and Ti-O-Ti bending modes, we reveal how structural order parameters rotate across a wall. Thus, we link observed near-field amplitude changes to underlying structural modulations and test ferroelectric switching models against real space measurements of local structure. This initiative opens the door to broadband infrared nano-imaging of heterogeneity in ferroics. Ferroic domain walls are nano-objects that are considered functional elements in future devices. Here, the authors study phonons across ferroelastic domain walls by synchrotron-based near-field infrared nano-spectroscopy and relate these changes to the order parameter which helps to understand domain wall dynamics.
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Ahamed Khan RA, Ghomashchi R, Xie Z, Chen L. Ferromagnetic Shape Memory Heusler Materials: Synthesis, Microstructure Characterization and Magnetostructural Properties. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E988. [PMID: 29891811 PMCID: PMC6025179 DOI: 10.3390/ma11060988] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 05/26/2018] [Accepted: 06/08/2018] [Indexed: 11/16/2022]
Abstract
An overview of the processing, characterization and magnetostructural properties of ferromagnetic NiMnX (X = group IIIA⁻VA elements) Heusler alloys is presented. This type of alloy is multiferroic—exhibits more than one ferroic property—and is hence multifunctional. Examples of how different synthesis procedures influence the magnetostructural characteristics of these alloys are shown. Significant microstructural factors, such as the crystal structure, atomic ordering, volume of unit cell, grain size and others, which have a bearing on the properties, have been reviewed. An overriding factor is the composition which, through its tuning, affects the martensitic and magnetic transitions, the transformation temperatures, microstructures and, consequently, the magnetostructural effects.
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Affiliation(s)
| | - Reza Ghomashchi
- School of Mechanical Engineering, University of Adelaide, Adelaide 5005, Australia.
| | - Zonghan Xie
- School of Mechanical Engineering, University of Adelaide, Adelaide 5005, Australia.
- School of Engineering, Edith Cowan University, Joondalup WA 6027, Australia.
| | - Lei Chen
- School of Mechanical Engineering, University of Adelaide, Adelaide 5005, Australia.
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