Study of the magnetization and transport properties of the La(2+x)/3Sr(1−x)/3Mn1−xCrxO3 (0≤x≤0.2) system |
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| Authors: | WJ Li R Ang YP Sun |
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| Institution: | a Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
b Structure Research Laboratory, University of Science and Science and Technology of China, Academia Sinaca, Hefei 230026, People's Republic of China |
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| Abstract: | The samples with the Mn3+/Mn4+ ratio fixed at 2:1 La(2+x)/3Sr(1−x)/3Mn1−xCrxO3 (0≤x≤0.20) have been prepared. The magnetic, electrical transport, and magnetoresistance properties have been investigated. Remarkable transport and colossal magnetoresistance (CMR) effect, as well as cluster glass (CG) behaviors have been clearly observed in the samples studied. It was found that the Curie temperature Tc and insulator−metal transition temperature Tp1 are strongly affected by Cr substitution. The experiment observations are discussed by taking into account the variety of tolerance factors t; the effects of A-site radius 〈rA〉 and the A-site mismatch effect (σ2). |
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| Keywords: | 71 30 +h 75 47 Gk 71 27 +a |
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