期刊
AIP ADVANCES
卷 10, 期 10, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/5.0023636
关键词
-
资金
- Ministry of Science and Technology, Taiwan
- MOST [108-2112-M-018-002]
- Russian Science Foundation [17-12-01333]
- Russian Science Foundation [20-12-18043, 17-12-01333] Funding Source: Russian Science Foundation
We investigate the Hf/GdFeCo bilayer with the MgO cap layer for both rare earth (RE)-rich and transition metal (TM)-rich configurations of the ferrimagnetic sublattice in the presence of the perpendicular field. We study the coercivity using the anomalous Hall effect (AHE) technique by multiple measurements on the same sample. In the first set of measurements and at low electric currents, coercivity sharply drops because of the oxygen diffusion at the interface between MgO and GdFeCo when the AHE probe current is applied. During the subsequent measurements on the RE-rich sample, we observe a moderate decrease in coercivity at low currents and the coercivity increases in a high current range. Such nonlinear dependence of coercivity on electric current can be explained by the competing interplay of the spin-orbit torque (SOT) and the Joule heating effects. On the other hand, for the TM-rich case, the SOT effect is observed over a widely applied current range. (C) 2020 Author(s).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据