Exchange bias in the layered cobaltite Sr1.5Pr0.5CoO4

被引：17

作者：

Ang, R.

Sun, Y. P. ^{[1
]}

Luo, X.

Hao, C. Y.

Zhu, X. B.

Song, W. H.

机构：

[1] Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2008年 / 104卷 / 02期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2959845

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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. (c) 2008 American Institute of Physics.

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页数：5

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