TY - JOUR
T1 - Room temperature ferromagnetism in BiFe1-xMnxO3 thin film induced by spin-structure manipulation
AU - Shigematsu, Kei
AU - Asakura, Takeshi
AU - Yamamoto, Hajime
AU - Shimizu, Keisuke
AU - Katsumata, Marin
AU - Shimizu, Haruki
AU - Sakai, Yuki
AU - Hojo, Hajime
AU - Mibu, Ko
AU - Azuma, Masaki
N1 - Funding Information:
This work was partially supported by Grants-in-Aid for Scientific Research, Nos. 15K14119, 16H02393, and 17K14105 from the Japan Society for the Promotion of Science (JSPS) and by the Kanagawa Institute of Industrial Science and Technology. The Mossbauer spectroscopic experiments were
PY - 2018/5/7
Y1 - 2018/5/7
N2 - 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.
AB - 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.
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U2 - 10.1063/1.5024710
DO - 10.1063/1.5024710
M3 - Article
AN - SCOPUS:85046964036
SN - 0003-6951
VL - 112
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 19
M1 - 192905
ER -