Exchange bias in the layered cobaltite Sr1.5Pr0.5CoO4
Exchange bias in the layered cobaltite Sr1.5Pr0.5CoO4
复制标题
层状钴矿 Sr1.5Pr0.5CoO4 中的交换偏压
DOI：
10.1063/1.2959845
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发表时间：
2008
影响因子：
3.2
通讯作者：
Wen
中科院分区：
文献类型：
--
作者：
R. Ang;Y. Sun;X. Luo;C. Hao;X. B. Zhu;Wen
本文用磁法研究了层状钴酸盐Sr_（1.5）Pr_（0.5）CoO_4的交换偏置现象。交换偏置强烈地依赖于冷却磁场以及测量场。这些结果表明，在铁磁（FM）区域和自旋玻璃（SG）区域之间的界面处的交换耦合可能会导致交换各向异性。所观察到的交换偏置效应，建议起源于钉扎FM时刻冻结自旋在SG区域沿着冷却场方向。我们的结果也扩展了磁可调交换偏置的概念，这将有助于自旋电子器件的潜在应用。
We investigate the exchange bias phenomenon in the layered cobaltite Sr1.5Pr0.5CoO4 by using magnetometry. The exchange bias is strongly dependent on the cooling magnetic field as well as the measuring field. These results suggest that the exchange coupling at the interfaces between the ferromagnetic (FM) regions and the spin-glass (SG) regions may induce an exchange anisotropy. The observed exchange bias effect is suggested to originate from the pinning to FM moments by frozen spins in the SG regions along the cooling field direction. Our results also expand the concept of the magnetically tunable exchange bias, which can contribute to the potential applications for spintronic devices.
影响因子：
8.6
作者：
Kodama, RH;Makhlouf, SA;Berkowitz, AE
通讯作者：
Berkowitz, AE
影响因子：
64.8
作者：
Kobayashi, KL;Kimura, T;Tokura, Y
通讯作者：
Tokura, Y