Unusual Magnetism Due to a Random Distribution of Cations in \alpha-LiFeO2
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概要
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The magnetic behavior of disordered \alpha-LiFeO2 is studied by Mössbauer spectroscopy, dc and ac susceptibilities. The 57Fe Mössbauer spectrum of \alpha-LiFeO2 can be fitted by two doublets with similar isomer shifts but different quadruple splittings due to different electric field gradients at the Fe3+ cores. The effective moment of \alpha-LiFeO2 is lower than that theoretical expected because of the formation of short-range antiferromagnetic clusters. The frequency dependence of the ac peaks at 88 K, irreversibility behavior and its evolution with the increasing strength of a superimposed dc field confirm a cluster spin glass state of \alpha-LiFeO2.
- 2011-09-15
著者
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Ehrenberg Helmut
Institute For Materials Science Darmstadt University Of Technology
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Chen Hong
College Of Life Science And Technology Central South University Of Forestry And Technology
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Chen Hong
College of Physics, Beihua University, Jilin, P. R. China
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Du Fei
College of Physics/State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, P. R. China
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Bie Xiaofei
College of Physics/State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, P. R. China
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Liu Lina
College of Physics/State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, P. R. China
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Gao Chunge
College of Physics/State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, P. R. China
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Wei Yingjin
College of Physics/State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, P. R. China
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Chen Gang
College of Physics/State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, P. R. China
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Wang Chunzhong
College of Physics/State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, P. R. China
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CHEN Gang
College of Fishery, Guangdong Ocean University
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Ehrenberg Helmut
Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
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CHEN Hong
College of Chemistry, Chemical Engineering and Food Safety, Bohai University
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Chen Gang
College of Computer Science, Zhejiang University
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