Asymmetric Magnetization Reversal Probed by Recoil Loop Measurements in an Exchange Biased La0.67Sr0.33MnO3/La0.33Ca0.67MnO3 Bilayer Film  

作　　者：王志宏 H.-U.HABERMEIER G.CRISTIANI 孙继荣 沈保根 

机构地区：[1]State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, PO Box 603, Beijing 100080 [2]Max-Planck-Institut fur Festkoperforschung, Heisenbergstrasse 1, D-70569, Stuttgart, Germany

出　　处：《Chinese Physics Letters》2008年第1期278-281,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 10774173.

摘　　要：We exploit the recoil loop measurements to study La0.07 Sr0.33 Mn O3/La0.33 Ca0.67 Mn O3 bilayer film. the asymmetric magnetization reversal in an exchange-biased It is found that the recoil curve encloses a marked area only in the second quadrant of the hysteresis loop, and the recoil susceptibility in the descending branch of the major loop is evidently higher than that in the ascending branch. The study indicates that the exchange anisotropy of a unidirectional nature and an orientation deviated from the easy axis of the ferromagnetic layer plays a crucial role in creating the reversal asymmetry.We exploit the recoil loop measurements to study La0.07 Sr0.33 Mn O3/La0.33 Ca0.67 Mn O3 bilayer film. the asymmetric magnetization reversal in an exchange-biased It is found that the recoil curve encloses a marked area only in the second quadrant of the hysteresis loop, and the recoil susceptibility in the descending branch of the major loop is evidently higher than that in the ascending branch. The study indicates that the exchange anisotropy of a unidirectional nature and an orientation deviated from the easy axis of the ferromagnetic layer plays a crucial role in creating the reversal asymmetry.

关 键 词：HYSTERESIS LOOPS ANISOTROPY MAGNETS 

分 类 号：O484[理学—固体物理]