R
Rie Y. Umetsu
Researcher at Tohoku University
Publications - 221
Citations - 4143
Rie Y. Umetsu is an academic researcher from Tohoku University. The author has contributed to research in topics: Magnetization & Ferromagnetism. The author has an hindex of 34, co-authored 208 publications receiving 3600 citations. Previous affiliations of Rie Y. Umetsu include National Institute of Advanced Industrial Science and Technology & Center for Advanced Materials.
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Kinetic arrest of martensitic transformation in the NiCoMnIn metamagnetic shape memory alloy
Wataru Ito,Kouhei Ito,Rie Y. Umetsu,Ryosuke Kainuma,Keiichi Koyama,Kazuo Watanabe,Asaya Fujita,Katsunari Oikawa,Kiyohito Ishida,Takeshi Kanomata +9 more
TL;DR: Magnetic and electrical resistivity changes due to a martensitic transformation in large magnetic fields were investigated in a NiCoMnIn alloy in this paper, where the transformation is interrupted at about 150k during field cooling and does not proceed with further cooling.
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Magnetic properties of Ni 50 Mn 34.8 In 15.2 probed by Mössbauer spectroscopy
V. V. Khovaylo,Takeshi Kanomata,T. Tanaka,Miho Nakashima,Yasushi Amako,Ryosuke Kainuma,Rie Y. Umetsu,Haruhiko Morito,Hiroyuki Miki +8 more
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Atomic ordering and magnetic properties in the Ni45Co5Mn36.7In13.3 metamagnetic shape memory alloy
TL;DR: In this article, the effects of chemical order on the phase stability and magnetic properties of the metamagnetic shape memory alloy Ni45Co5Mn36.7In13.3 were investigated.
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Phase separation and magnetic properties of half-metal-type Co2Cr1−xFexAl alloys
K. Kobayashi,Rie Y. Umetsu,Ryosuke Kainuma,Kiyohito Ishida,T. Oyamada,Asaya Fujita,Kazuaki Fukamichi +6 more
TL;DR: The phase stability and magnetic properties of the half-metal-type Co2Cr1−xFexAl alloy system were investigated in this paper, where it was found that the occurrence of two-phase separation is unavoidable in a concentration range of less than x=0.4, leading to deviation of the saturation magnetic moments from the generalized Slater-Pauling line.
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Magnetic field-induced reverse transformation in B2-type NiCoMnAl shape memory alloys
TL;DR: In this article, the effects of the addition of Co to the NiMnAl alloy on the martensitic and magnetic properties were investigated, and it was shown that the magnetic properties of the parent (P) phase drastically changed from paramagnetic to ferromagnetic, while the magnetization in the M phase slightly decreased with increasing Co composition.