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Journal Articles

Structural investigation of magnetocapacitive SmMnO$$_3$$

Maeda, Hiroki*; Ishiguro, Yuki*; Honda, Takashi*; Jung, J.-S.*; Michimura, Shinji*; Inami, Toshiya; Kimura, Tsuyoshi*; Wakabayashi, Yusuke*

Journal of the Ceramic Society of Japan, 121(3), p.265 - 267, 2013/03

 Times Cited Count:2 Percentile:17.12(Materials Science, Ceramics)

Structural deformation of a magnetocapacitive material SmMnO$$_3$$ was studied by X-ray diffraction measurement in a magnetic field. This antiferromagnetic material shows a jump in dielectric constant at 9 K only when a magnetic field of a few tesla is applied. In-field X-ray diffraction measurements clarified that there is no sudden change in structure that involves atomic displacement within the c-plane in Pbnm notation, while the antiferromagnetic phase transition at 60 K gives rise to a noticeable rotation of the MnO$$_6$$ octahedra. This rotation occurs to maximize the energy gain through the exchange interaction.

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