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The magnetoresistive behavior of Cr-doped manganites Pr0.44Sr0.56MnO3

Z. Jirak·J. Hejtmanek·K. Knizek·M. Marysko·C. Martin·A. Maignan·M. Hervieu
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Abstract

A complex structural, magnetic and electric transport investigation shows that the Cr doping on Mn sites in the A-type antiferromagnet Pr0.44Sr0.56MnO3 provokes a non-uniform magnetic state with coexisting FM and AFM regions. Irrespective of the ratio of magnetic phases, the samples exhibit a non-metallic behavior of resistivity and thermopower, pointing to the nanoscopic nature of the phase separation. A particularly large magnetoresistance encountered in a broad range of temperatures for samples with Cr doping of 4 - 6 % supports such idea.

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Z. Jirak, J. Hejtmanek, K. Knizek, M. Marysko, C. Martin, A. Maignan, M. Hervieu. 2010-07-29. The magnetoresistive behavior of Cr-doped manganites Pr0.44Sr0.56MnO3. https://doi.org/10.1063/1.1556939

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