標題: Electrically enhanced magnetization in highly strained BiFeO3 films
作者: Yang, Jan-Chi
Kuo, Chang-Yang
Liu, Heng-Jui
Ding, Hang-Chen
Duan, Chun-Gang
Lin, Hong-Ji
Hu, Zhiwei
Pi, Tun-Wen
Tjeng, Liu Hao
Chen, Chien-Te
Arenholz, Elke
He, Qing
Chu, Ying-Hao
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: May-2016
摘要: The control of magnetism via an electric field has attracted substantial attention because of potential applications in magnetoelectronics, spintronics and high-frequency devices. In this study, we demonstrate a new approach to enhance and control the magnetization of multiferroic thin film by an electric stimulus. First, to reduce the strength of the antiferromagnetic superexchange interaction in BiFeO3, we applied strain engineering to stabilize a highly strained phase. Second, the direction of the ferroelectric polarization was controlled by an electric field to enhance the Dzyaloshinskii-Moriya interaction in the highly strained BiFeO3 phase. Because of the magnetoelectric coupling in BiFeO3, a strong correlation between the modulated ferroelectricity and enhanced magnetization was observed. The tunability of this strong correlation by an electric field provides an intriguing route to control ferromagnetism in a single-phase multiferroic.
URI: http://dx.doi.org/10.1038/am.2016.55
http://hdl.handle.net/11536/133967
ISSN: 1884-4049
DOI: 10.1038/am.2016.55
期刊: NPG ASIA MATERIALS
Volume: 8
Appears in Collections:Articles