Abstract
Layered hybrid improper ferroelectrics are very important for multiferroic devices; however, it has been very challenging to obtain multiferroic properties at room temperature. In this study we report that acceptor-donor codoping can be used to realize ferromagnetism in improper ferroelectric ceramics at room temperature. The transmission electron microscope observation and first-principles calculation revealed that the obtained ferromagnetic properties result from the octahedron tilt caused by the large lattice distortion near the acceptor-donor pair. At the same time, an obvious magnetoimpedance effect was observed.
- Received 8 September 2020
- Revised 1 August 2021
- Accepted 10 January 2022
DOI:https://doi.org/10.1103/PhysRevB.105.014430
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