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arXiv · 1103.3342

Structure-related transport properties of A-site ordered perovskite Sr3ErMn4-xGaxO10.5-d

W. Kobayashi·T. Ishibashi
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Abstract

We report x-ray diffraction, resistivity, thermopower, and magnetization of Sr3ErMn4-xGaxO10.5-d, in which A-site ordered tetragonal phase appears above x=1, and reveal that the system exhibits typical properties seen in the antiferromagnetic insulator with Mn3+. We succeed in preparing both A-site ordered and disordered phases for x=1 in different preparation conditions, and observe a significant decrease of the resistivity in the disordered phase. We discuss possible origins of the decrease focusing on the dimensionality and the disordered effect.

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W. Kobayashi, T. Ishibashi. 2011-03-17. Structure-related transport properties of A-site ordered perovskite Sr3ErMn4-xGaxO10.5-d. https://doi.org/10.1016/j.jmmm.2009.09.057

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