High-Temperature Regeneration of Perpendicular Exchange Bias in a Pt/Co/Pt/α-Cr2O3/Pt Thin Film System

被引：18
|
作者：
Shiratsuchi, Yu [1 ]
Takechi, Yuichiro [1 ]
Toyoki, Kentaro [1 ]
Nakano, Yuuta [1 ]
Onoue, Satoshi [1 ]
Mitsumata, Chiharu [2 ]
Nakatani, Ryoichi [1 ]
机构：
[1] Osaka Univ, Grad Sch Engn, Dept Mat Sci & Engn, Suita, Osaka 5650871, Japan
[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
来源：
APPLIED PHYSICS EXPRESS | 2013年 / 6卷 / 12期
关键词：
MAGNETIC-ANISOTROPY; CR2O3; MODEL;
D O I：
10.7567/APEX.6.123004
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We found the regeneration of perpendicular exchange bias at high temperature in the Pt-capping/Co/Pt-spacer/alpha-Cr2O3/Pt-buffer thin film with an ultrathin (0.2 nm) Pt-spacer layer after the disappearance at low temperature. Abrupt changes in the coercivity accompany the abrupt disappearance and regeneration of exchange bias. The direction of the regenerated exchange bias could be reversed by altering the ferromagnetic spin orientation during temperature rise. The exchange bias did not regenerate when the Pt spacer layer was grown at a slow growth rate, suggesting that the growth mode of Pt on the alpha-Cr2O3 layer affects the regeneration feature. (C) 2013 The Japan Society of Applied Physics
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页数：4
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