Cooling field dependence of exchange bias in phase-separated La0.88Sr0.12CoO3
Cooling field dependence of exchange bias in phase-separated La0.88Sr0.12CoO3
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DOI：
10.1063/1.2219698
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发表时间：
2006-07
影响因子：
3.2
通讯作者：
Yan-kun Tang;Young Sun;Zhaohua Cheng
中科院分区：
文献类型：
--
作者：
Yan-kun Tang;Young Sun;Zhaohua Cheng
我们报告的观察交换偏置现象的空穴掺杂的钙钛矿型钴酸盐La0.88Sr0.12CoO3中发生的自发相分离。当样品在静磁场中冷却到冻结温度时，磁化磁滞回线向负磁场移动。此外，交换偏置强烈地依赖于冷却场。这些结果突出了在相分离系统中内在的不均匀相之间的玻璃界面的重要作用。
We report the observation of exchange bias phenomena in the hole-doped perovskite cobaltite La0.88Sr0.12CoO3 in which a spontaneous phase separation occurs. When the sample is cooled in a static magnetic field through a freezing temperature, the magnetization hysteresis loops shift to the negative field. Moreover, the exchange bias strongly depends on the cooling field. These results highlight the important role of a glassy interface between the intrinsic inhomogeneous phases in a phase-separated system.