Room temperature ferromagnetism in BiFe1-xMnxO3 thin film induced by spin-structure manipulation

Kei Shigematsu, Takeshi Asakura, Hajime Yamamoto, Keisuke Shimizu, Marin Katsumata, Haruki Shimizu, Yuki Sakai, Hajime Hojo, Ko Mibu, Masaki Azuma

研究成果: Contribution to journalArticle

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The evolution of crystal structure, spin structure, and macroscopic magnetization of manganese-substituted BiFeO3 (BiFe1-xMnxO3), a candidate for multiferroic materials, were investigated on bulk and epitaxial thin-film. Mn substitution for Fe induced collinear antiferromagnetic spin structure around room temperature by destabilizing the cycloidal spin modulation which prohibited the appearance of net magnetization generated by Dzyaloshinskii-Moriya interaction. For the bulk samples, however, no significant signal of ferromagnetism was observed because the direction of the ordered spins was close to parallel to the electric polarization so that spin-canting did not occur. On the contrary, BiFe1-xMnxO3 thin film on SrTiO3 (001) had a collinear spin structure with the spin direction perpendicular to the electric polarization at room temperature, where the appearance of spontaneous magnetization was expected. Indeed, ferromagnetic hysteresis behavior was observed for BiFe0.9Mn0.1O3 thin film.

ジャーナルApplied Physics Letters
出版物ステータス出版済み - 5 7 2018

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

フィンガープリント Room temperature ferromagnetism in BiFe<sub>1-</sub><sub>x</sub>Mn<sub>x</sub>O<sub>3</sub> thin film induced by spin-structure manipulation' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

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    Shigematsu, K., Asakura, T., Yamamoto, H., Shimizu, K., Katsumata, M., Shimizu, H., Sakai, Y., Hojo, H., Mibu, K., & Azuma, M. (2018). Room temperature ferromagnetism in BiFe1-xMnxO3 thin film induced by spin-structure manipulation. Applied Physics Letters, 112(19), [192905].