First-Order Magnetic Phase Transition in bcc FeRh--Ir Alloy under High Pressures up to 6.2, GPa

Shinji Yuasa; Hideki Miyajima; Yoshichika Otani; Kazuhiko Tsuji; Yoshinori Katayama; Kazuhisa Kusumi; Hiroyuki Yokoyama; Kenichi Yaoita; Osamu Shimomura

doi:10.1143/jpsj.63.855

Shinji Yuasa, Hideki Miyajima, Yoshichika Otani, Kazuhiko Tsuji, Yoshinori Katayama, Kazuhisa Kusumi, Hiroyuki Yokoyama, Kenichi Yaoita, Osamu Shimomura

Author information

Shinji Yuasa
Department of Physics, Faculty of Science and Technology, Keio University, Hiyoshi 3–14–1, Kohoku, Yokohama 223
Hideki Miyajima
Department of Physics, Faculty of Science and Technology, Keio University, Hiyoshi 3–14–1, Kohoku, Yokohama 223
Yoshichika Otani
Department of Physics, Faculty of Science and Technology, Keio University, Hiyoshi 3–14–1, Kohoku, Yokohama 223
Kazuhiko Tsuji
Department of Physics, Faculty of Science and Technology, Keio University, Hiyoshi 3–14–1, Kohoku, Yokohama 223
Yoshinori Katayama
Department of Physics, Faculty of Science and Technology, Keio University, Hiyoshi 3–14–1, Kohoku, Yokohama 223
Kazuhisa Kusumi
Department of Physics, Faculty of Science and Technology, Keio University, Hiyoshi 3–14–1, Kohoku, Yokohama 223
Hiroyuki Yokoyama
Department of Physics, Faculty of Science and Technology, Keio University, Hiyoshi 3–14–1, Kohoku, Yokohama 223
Kenichi Yaoita
National Institute for Research in Inorganic Materials, Namiki 1–1, Tsukuba, Ibaraki 305
Osamu Shimomura
Photon Factory, National Laboratory for High Energy Physics, Oho 1–1, Tsukuba, Ibaraki 305

Keywords: FeRh_0.95Ir_0.05, first-order phase transition, antiferromagnetic-ferromagnetic transition, antiferromagnetic-paramagnetic transition, high pressure, X-ray diffractometry

JOURNAL RESTRICTED ACCESS

1994 Volume 63 Issue 3 Pages 855-858

DOI https://doi.org/10.1143/jpsj.63.855

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Abstract

Magnetic phase transitions in bcc FeRh_0.95Ir_0.05 alloy were investigated under high pressures up to 6.2, GPa by means of X-ray diffractometry using synchrotron radiation. The phase transition from antiferromagnetic to paramagnetic at high pressures with increasing temperature was confirmed to be a first-order phase transition accompanied by a volume expansion of about 0.3

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