Anomalous Magnetic Behavior in Phase-separated La0.5 Sr0.5 MnO3 +δ Films
来源期刊：JOURNAL OF RARE EARTHS2004年增刊第1期
论文作者：Yan Hui Yu Dunbo Du Yongsheng Zhang Guocheng Ying Qiming Wang Bo Li Tong
Key words：phase separation; manganite; hysteresis loop;
Abstract: (001)La0.5 Sr0.5MnO3 +δ films on (001)LaA1O3 substrates were prepared by using a RF magnetron sputtering with powder target.At low temperature, the films exhibit two phase coexistence, which means that ferromagnetic (FM) clusters are embedded in antiferromagnetic (AFM) matrix.Moreover, a shift in hysteresis loop is unexpectedly observed in this inhomogeneous system.We suggest that the anomalous hysteresis loop may result from the unidirectional exchange anisotropy at the interface between AFM and FM clusters.
Yan Hui1，Yu Dunbo2，Du Yongsheng1，Zhang Guocheng2，Ying Qiming2，Wang Bo1，Li Tong1
(1.Thin Film Materials Laboratory, Beijing University of Technology, Beijing 100022, China;
2.Grirem Advanced Materials Co. Ltd.,Beijing 100088, China)
Abstract:(001)La0.5 Sr0.5MnO3 +δ films on (001)LaA1O3 substrates were prepared by using a RF magnetron sputtering with powder target.At low temperature, the films exhibit two phase coexistence, which means that ferromagnetic (FM) clusters are embedded in antiferromagnetic (AFM) matrix.Moreover, a shift in hysteresis loop is unexpectedly observed in this inhomogeneous system.We suggest that the anomalous hysteresis loop may result from the unidirectional exchange anisotropy at the interface between AFM and FM clusters.
Key words:phase separation; manganite; hysteresis loop;
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