✦ LIBER ✦

Magnetoresistance and transport properties of different impurity doped La0.67Ca0.33MnO3 composite

✍ Scribed by Z.C. Xia; S.L. Yuan; W. Feng; L.J. Zhang; G.H. Zhang; J. Tang; L. Liu; D.W. Liu; Q.H. Zheng; L. Chen; Z.H. Fang; S. Liu; C.Q. Tang

Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 374 KB
Volume: 127
Category: Article
ISSN: 0038-1098
DOI: 10.1016/s0038-1098(03)00506-4

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✦ Synopsis

An enhanced magnetoresistance and a two-fold effect result from impurity dopant were observed in composites of La 0.67 Ca 0.33 MnO 3 /YSZ and La 0.67 Ca 0.33 MnO 3 /Fe 3 O 4 . Where YSZ represents yttria-stabilized zirconia and the doping level of both YSZ and Fe 3 O 4 is 1 mol%. Different electrical and magnetic transport properties, in particular a lower field magnetization behavior, were observed between pure La 0.67 Ca 0.33 MnO 3 and the impurity doped La 0.67 Ca 0.33 MnO 3 composites. Compared with pure La 0.67 Ca 0.33 MnO 3 , a possible interpretation is presented by considering the influences of YSZ and Fe 3 O 4 on the structure of grain boundaries and/or surfaces of La 0.67 Ca 0.33 MnO 3 grains.

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