[15p-P07-1~60] 10 Spintronics and Magnetics (Poster)

[15p-P07-24] Hydrogen-induced modulation of magnetization compensation temperature in ferrimagnets

〇Tomohiro Koyama^1,2,3,4, Takumi Tsuji¹, Kenji Tanabe⁵, Daichi Chiba^1,3,4,6 (1.SANKEN, Osaka Univ., 2.JST PRESTO, 3.CSRN, Osaka Univ., 4.OTRI, Osaka Univ., 5.Toyota Tech. Inst., 6.SRIS, Tohoku Univ.)

Keywords:

ferrimagnet,hydrogeneration,compensation temperature

Rare earth(RE)-transition metal(TM) alloy ferrimagnets are attracted attention because they exhibit fast magnetization dynamics near the magnetization or angular momentum compensation temperature. On the other hand, bulk RE-TM alloys have long been studied as hydrogen storage materials. The reason of this is that the RE elements are easily hydride. Therefore, it is expected that the magnetic properties of the RE-TM thin films are also modulated by hydrogeneration and they are applied to new magnetic devices driven by hydrogen. In this study, we have investigated the hydrogen-induced modulation of magnetic properties in RE-Co (RE=Gd, Tb) alloy thin films.