Electrically enhanced magnetization in highly strained BiFeO<sub>3</sub> films
- Yang, J.
- Kuo, C.
- Liu, H.
- Ding, H.
- Duan, C.
- Lin, H.
- Hu, Z.
- Pi, T.
- Tjeng, L.
- Chen, C.
- Arenholz, E.
- He, Q.
- Chu, Y.
DOIAbstract
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 f...
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