Magnetotransport Behaviors in Electron-Doped Manganese Oxide La0.9Te0.1MnO3

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The magnetotransport behaviors of electron-doped colossal magnetoresistance (CMR) manganites La0.9Te0.1MnO3 have been investigated in external magnetic fields up to 4 T. The temperature dependence of the resistivity shows that the transport mechanisms of the sample below the metal-insulator transition temperature are attributed to the electron-phonon and magnon scattering behaviors. While the resistivity above Curie temperature (Tc=240 K) can be fitted with either polaron transport or variable-range hopping, and the fitting results are affected significantly by the magnetic fields. The electron spin resonance investigation indicated that there exist the ferromagnetic clusters up to 280 K in the paramagnetic phase of the sample. As a result, a possible correlation between the resistivty and phase separation is considered.

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Materials Science Forum (Volumes 475-479)

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Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie

Pages:

2259-2262

Citation:

G. Tan et al., "Magnetotransport Behaviors in Electron-Doped Manganese Oxide La0.9Te0.1MnO3", Materials Science Forum, Vols. 475-479, pp. 2259-2262, 2005

Online since:

January 2005

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$38.00

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