Electric-Field-Induced Reorientation of the Magnetic Easy Plane in a Co-Substituted BiFeO3 Single Crystal

Hajime Yamamoto; Yuki Sakai; Kei Shigematsu; Takuya Aoyama; Tsuyoshi Kimura; Masaki Azuma

doi:10.1021/acs.inorgchem.7b02501

Electric-Field-Induced Reorientation of the Magnetic Easy Plane in a Co-Substituted BiFeO₃ Single Crystal

Inorg Chem. 2017 Dec 18;56(24):15171-15177. doi: 10.1021/acs.inorgchem.7b02501. Epub 2017 Nov 29.

Authors

Hajime Yamamoto¹, Yuki Sakai², Kei Shigematsu¹, Takuya Aoyama³, Tsuyoshi Kimura⁴, Masaki Azuma¹

Affiliations

¹ Laboratory for Materials and Structures, Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8503, Japan.
² Kanagawa Institute of Industrial Science and Technology , Ebina, Kanagawa 243-0435, Japan.
³ Department of Physics, Tohoku University , Sendai, Miyagi 980-8578, Japan.
⁴ Division of Materials Physics, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan.

PMID: 29185720
DOI: 10.1021/acs.inorgchem.7b02501

Abstract

Single crystals of BiFe_0.9Co_0.1O₃ and BiFe_0.892Mn_0.008Co_0.1O₃, room temperature ferroelectric ferromagnets, were successfully grown by a flux method at a high pressure of 3 GPa. Remanent magnetization measurements along 18 crystallographic directions revealed the existence of a magnetic easy plane perpendicular to the electric polarization. Reorientation of the magnetic easy plane occurred in connection with 71° ferroelectric switching by applying an electric field. This is the first demonstration of an electric field affecting the local magnetic moment of Co-substituted BiFeO₃.