Magnetoresistance and magnetization of La2/3 (Ca0.60Ba0.40)1/3MnO3 in different temperature ranges

Magnetoresistance and magnetization of La2/3 (Ca0.60Ba0.40)1/3MnO3 in different temperature ranges

O482.5; A polycrystalline La2/3 (Ca0.60 Ba0.40 ) 1/3 MnO3 was prepared by standard solid reaction method. Magnetization(M) and magnetoresistance of the sample were measured between T= 77 K and 350 K. It is found that some correlations exist in the external field dependency of the magnetoresistance m...

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Veröffentlicht in:中国有色金属学会会刊（英文版） 2005-04, Vol.15 (2), p.323-327
Hauptverfasser: GAI Rong-quan, HUANG Zhi-gao, Lai Heng, CHEN Shui-yuan, DU You-wei
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container_title 中国有色金属学会会刊（英文版）
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creator GAI Rong-quan
HUANG Zhi-gao
Lai Heng
CHEN Shui-yuan
DU You-wei
description O482.5; A polycrystalline La2/3 (Ca0.60 Ba0.40 ) 1/3 MnO3 was prepared by standard solid reaction method. Magnetization(M) and magnetoresistance of the sample were measured between T= 77 K and 350 K. It is found that some correlations exist in the external field dependency of the magnetoresistance magnetoresistance and M in the low and high temperature regions. Moreover, there are different magnetic field dependence of magnetoresistance and magnetization in different temperature ranges, which indicates the presence of different magnetoresistance mechanisms.Based on the models of spin-polarized tunneling and percolation model, the simulated magnetoresistance obtained using Monte Carlo method well explains the experimental fact.
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title Magnetoresistance and magnetization of La2/3 (Ca0.60Ba0.40)1/3MnO3 in different temperature ranges
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