Enhanced magnetoresistance in La07Sr03MnO3 nanoscaledgranular composites |
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| Authors: | Huang Yunhui Yan Chunhua Wang Zheming Xu Zhigang Zhu Tao Liao Chunsheng Gao Song and Xu Guangxian |
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| Institution: | (1) State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry, Peking University, 100871 Beijing, China |
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| Abstract: | By soft chemical processing, two kinds of nanoscaled lanthanum manganite granular composites, La07Sr03Mn3 / CoFe2O4 (LSMO/CF) and La07Sr0.3Mn3 / Nd07Sr03MnO3(LSMO/NSMO), were fabricated. Enhancement in magnetoresistance is observed in both of the composites. Different magnetic compounds,
CF and NSMO, embedded in LSMO matrix, result in different temperature ranges where the enhancement occurs. It is considered
that the phenomenon is associate with electron tunneling between sorts of grains as well as spin-dependent scattering. |
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| Keywords: | lanthanum manganites granular composites magnetoresistance |
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