Angular momentum compensation manipulation to room temperature of the ferrimagnet Ho$_{3-x}$Dy$_x$Fe$_5$O$_{12}$ detected by the Barnett effect

Masaki Imai; Hiroyuki Chudo; Masao Ono; Kazuya Harii; Mamoru Matsuo; Yuichi Ohnuma; Sadamichi Maekawa; Eiji Saitoh

doi:10.1063/1.5095166

paper

Angular momentum compensation manipulation to room temperature of the ferrimagnet Ho $_{3 - x}$ Dy $_{x}$ Fe $_{5}$ O $_{12}$ detected by the Barnett effect

arXiv:1904.04567 · doi:10.1063/1.5095166

Abstract

We demonstrate that the angular momentum compensation temperature $T_{A}$ , at which the net angular momentum in the sample disappears, can be controlled in Ho $_{3}$ Fe $_{5}$ O $_{12}$ by partially substituting Dy for Ho. The $T_{A}$ can be detected using the Barnett effect, by which mechanical rotation magnetizes an object due to spin-rotation coupling. We found that $T_{A}$ increases with the Dy content and clarified that the $T_{A}$ of Ho $_{1.5}$ Dy $_{1.5}$ Fe $_{5}$ O $_{12}$ coincides with room temperature. The Barnett effect enables us to explore materials applicable to magnetic devices utilizing the angular momentum compensation only by rotating the powder sample at room temperature.

5pages, 4figure

Angular momentum compensation manipulation to room temperature of the ferrimagnet Ho3−x​Dyx​Fe5​O12​ detected by the Barnett effect

Abstract

Cited by in corpus (2)

Angular momentum compensation manipulation to room temperature of the ferrimagnet Ho $_{3 - x}$ Dy $_{x}$ Fe $_{5}$ O $_{12}$ detected by the Barnett effect