Transport Property and EPR Studies for La1-xLixMnO3System

Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (4): 629.

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Transport Property and EPR Studies for La_1-xLi_xMnO₃System

ZHOU Xian-Feng^1,2, LI Li-Ping^1,2, SONG Xiao-Yu¹, MIAO Ji-Peng¹, SU Wen-Hui^1,2,3

1. Department of Physics, Jilin Universitya, Changchun, 130023;
2. Key Lab. of Rare Earth Chemistry and Physics, Chinese Academy of Sciences, Changchun, 130022;
3. International Center for Materials Physics, Academia Sinica, Shenyang, 110015

Received:1998-08-31 Online:1999-04-24 Published:1999-04-24

Abstract

Abstract: The perovskite oxides La_1-xLi_xMnO₃were prepared by solid state reactions. The XRD results indicate that all samples crystallize in rhombohedral structure. Except x=0, 0.3 ones, all samples show a transition from insulator to metal with decreasing temperature within the liquid nitrogen temperature region, where x=0.15 sample exhibits the highest transition temperature. The negative magnetoresistance phenomena is observed at applying the magnetic field with H=1.0 T. The EPRsignal with g=2.00 is closely related with the complex of Mn³⁺-Mn⁴⁺clusters.

Key words: La_1-xLi_xMnO₃, EPR, Mn³⁺-Mn⁴⁺clusters, Magnetoresistance

CLC Number:

O513

TrendMD:

ZHOU Xian-Feng, LI Li-Ping, SONG Xiao-Yu, MIAO Ji-Peng, SU Wen-Hui . Transport Property and EPR Studies for La_1-xLi_xMnO₃System[J]. Chem. J. Chinese Universities, 1999, 20(4): 629.

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Transport Property and EPR Studies for La_1-xLi_xMnO₃System

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