Magnetic Properties of the Ferromagnetic Shape Memory Alloys Ni50+xMn27−xGa23 in Magnetic Fields
Thermal strain, permeability, and magnetization measurements of the ferromagnetic shape memory alloys Ni50+xMn27−xGa23 (x = 2.0, 2.5, 2.7) were performed. For x = 2.7, in which the martensite transition and the ferromagnetic transition occur at the same temperature, the martensite transition startin...
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doaj-42ac0a7bf6974720845b1d0e4b5e4f1e2020-11-24T22:02:42ZengMDPI AGMaterials1996-19442014-05-01753715373410.3390/ma7053715ma7053715Magnetic Properties of the Ferromagnetic Shape Memory Alloys Ni50+xMn27−xGa23 in Magnetic FieldsTakuo Sakon0Kohei Otsuka1Junpei Matsubayashi2Yuushi Watanabe3Hironori Nishihara4Kenta Sasaki5Satoshi Yamashita6Rie Y. Umetsu7Hiroyuki Nojiri8Takeshi Kanomata9Department of Mechanical and Systems Engineering, Faculty of Science and Technology, Ryukoku University, Otsu 520-2194, JapanDepartment of Mechanical and Systems Engineering, Faculty of Science and Technology, Ryukoku University, Otsu 520-2194, JapanDepartment of Mechanical and Systems Engineering, Faculty of Science and Technology, Ryukoku University, Otsu 520-2194, JapanDepartment of Mechanical and Systems Engineering, Faculty of Science and Technology, Ryukoku University, Otsu 520-2194, JapanDepartment of Mechanical and Systems Engineering, Faculty of Science and Technology, Ryukoku University, Otsu 520-2194, JapanDepartment of Mechanical Engineering, Graduate School of Engineering and Resource Science, Akita University, Akita 010-8502, JapanFaculty of Engineering, Tohoku Gakuin University, Tagajo 985-8537, JapanInstitute for Materials Research, Tohoku University, Sendai 980-8577, JapanInstitute for Materials Research, Tohoku University, Sendai 980-8577, JapanResearch Institute for Engineering and Technology, Tohoku Gakuin University, Tagajo 985-8537, JapanThermal strain, permeability, and magnetization measurements of the ferromagnetic shape memory alloys Ni50+xMn27−xGa23 (x = 2.0, 2.5, 2.7) were performed. For x = 2.7, in which the martensite transition and the ferromagnetic transition occur at the same temperature, the martensite transition starting temperature TMs shift in magnetic fields around a zero magnetic field was estimated to be dTMs/dB = 1.1 ± 0.2 K/T, thus indicating that magnetic fields influences martensite transition. We discussed the itinerant electron magnetism of x = 2.0 and 2.5. As for x = 2.5, the M4 vs. B/M plot crosses the origin of the coordinate axis at the Curie temperature, and the plot indicates a good linear relation behavior around the Curie temperature. The result is in agreement with the theory by Takahashi, concerning itinerant electron ferromagnets.http://www.mdpi.com/1996-1944/7/5/3715shape memory alloysthermal strainmagnetizationmagnetic propertiesmagnetic fielditinerant electron ferromagnet |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Takuo Sakon Kohei Otsuka Junpei Matsubayashi Yuushi Watanabe Hironori Nishihara Kenta Sasaki Satoshi Yamashita Rie Y. Umetsu Hiroyuki Nojiri Takeshi Kanomata |
spellingShingle |
Takuo Sakon Kohei Otsuka Junpei Matsubayashi Yuushi Watanabe Hironori Nishihara Kenta Sasaki Satoshi Yamashita Rie Y. Umetsu Hiroyuki Nojiri Takeshi Kanomata Magnetic Properties of the Ferromagnetic Shape Memory Alloys Ni50+xMn27−xGa23 in Magnetic Fields Materials shape memory alloys thermal strain magnetization magnetic properties magnetic field itinerant electron ferromagnet |
author_facet |
Takuo Sakon Kohei Otsuka Junpei Matsubayashi Yuushi Watanabe Hironori Nishihara Kenta Sasaki Satoshi Yamashita Rie Y. Umetsu Hiroyuki Nojiri Takeshi Kanomata |
author_sort |
Takuo Sakon |
title |
Magnetic Properties of the Ferromagnetic Shape Memory Alloys Ni50+xMn27−xGa23 in Magnetic Fields |
title_short |
Magnetic Properties of the Ferromagnetic Shape Memory Alloys Ni50+xMn27−xGa23 in Magnetic Fields |
title_full |
Magnetic Properties of the Ferromagnetic Shape Memory Alloys Ni50+xMn27−xGa23 in Magnetic Fields |
title_fullStr |
Magnetic Properties of the Ferromagnetic Shape Memory Alloys Ni50+xMn27−xGa23 in Magnetic Fields |
title_full_unstemmed |
Magnetic Properties of the Ferromagnetic Shape Memory Alloys Ni50+xMn27−xGa23 in Magnetic Fields |
title_sort |
magnetic properties of the ferromagnetic shape memory alloys ni50+xmn27−xga23 in magnetic fields |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2014-05-01 |
description |
Thermal strain, permeability, and magnetization measurements of the ferromagnetic shape memory alloys Ni50+xMn27−xGa23 (x = 2.0, 2.5, 2.7) were performed. For x = 2.7, in which the martensite transition and the ferromagnetic transition occur at the same temperature, the martensite transition starting temperature TMs shift in magnetic fields around a zero magnetic field was estimated to be dTMs/dB = 1.1 ± 0.2 K/T, thus indicating that magnetic fields influences martensite transition. We discussed the itinerant electron magnetism of x = 2.0 and 2.5. As for x = 2.5, the M4 vs. B/M plot crosses the origin of the coordinate axis at the Curie temperature, and the plot indicates a good linear relation behavior around the Curie temperature. The result is in agreement with the theory by Takahashi, concerning itinerant electron ferromagnets. |
topic |
shape memory alloys thermal strain magnetization magnetic properties magnetic field itinerant electron ferromagnet |
url |
http://www.mdpi.com/1996-1944/7/5/3715 |
work_keys_str_mv |
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