Giant Magnetoresistive Nanocrystalline Films of La1-xSrxMnO3Prepared by Sol gel Method

Abstract

Abstract: The nanocrystalline films of perovskite like manganites La_1-xSr_xMnO₃(LSMO, x= 0～0.6 ) on the single silicon(100) substrates have been fabricated by sol gel method. The annealing dependence of the phase formation, grain size and film morphorlogy have been investigated. The measurement on the magnetoresistance of the films with standard four electrode method shows a widened peak of resistance for each sample due to the boundary effect and a MR value of about -30% at room temperature in₆Tmagnetic field for the sample La_0.7Sr_0.3MnO_3.

Key words: So-gel method, Perovskite, Nanocrystalline films, Giant magnetoresistance

CLC Number:

O641

TrendMD:

ZHANG Zhi-Li, WANG Zhe-Ming, HUANG Yun-Hui, CHENG Fu-Xiang, LIAO Chun-Sheng, GAO Song, YAN Chun-Hua . Giant Magnetoresistive Nanocrystalline Films of La_1-xSr_xMnO₃Prepared by Sol gel Method[J]. Chem. J. Chinese Universities, 1999, 20(5): 665.

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Giant Magnetoresistive Nanocrystalline Films of La_1-xSr_xMnO₃Prepared by Sol gel Method

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