Giant magnetoresistance in granular perovskite La 0.8Sr 0.2MnO 3

Ning Zhang, Wei Ping Ding, Zaibing Guo, Wei Zhong, Kai He Du, You Wei Du

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    2 Scopus citations

    Abstract

    The electric and magnetic properties in granular perovskite La 0.8Sr 0.2MnO 3 have been investigated. A giant magnetoresistance (GMR) has been observed at temperatures well below T c, the Curie temperature, associated with crystal intrinsic magnetic properties. The granular GMR effect is also isotropic but shows some characteristics different from those in the films and crystals of similar perovskites. This suggests an effect of interfacial spin-dependent tunneling in the granular perovskite at temperatures much lower than T c. In addition, with the reduction of grain size, an evident superparamagnetic behavior has been observed.

    Original languageEnglish (US)
    Pages (from-to)229-232
    Number of pages4
    JournalChinese Physics Letters
    Volume14
    Issue number3
    DOIs
    StatePublished - Dec 1 1997

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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