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Bismuth ferrite (BiFeO3)-based materials are multiferroic materials widely studied. This study reports that strong ferroelectricity and enhanced magnetic performance are simultaneously obtained in the quenched (1-x)BiFeO3-xBaTiO3 (BFBT100x, x = 0.2 and 0.3) ceramics. Quenching treatment can reduce the amount of defects and Fe2+ ions and make the defect dipole in a random state, which is conducive to improving the ferroelectricity and magnetism. Compared with the conventional sintered samples, the quenched ceramics have higher remnant and saturation polarization. As for magnetism, the coercive field (Hc) of the quenched ceramics is smaller and the quenching treatment can increase the maximum magnetization by up to 15%.


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Enhanced ferroelectricity and magnetism of quenched (1-x)BiFeO3-xBaTiO3 ceramics

Show Author's information Han BAIJun LI( )Yang HONGZhongxiang ZHOU( )
School of Physics, Harbin Institute of Technology, Harbin 150001, China

Abstract

Bismuth ferrite (BiFeO3)-based materials are multiferroic materials widely studied. This study reports that strong ferroelectricity and enhanced magnetic performance are simultaneously obtained in the quenched (1-x)BiFeO3-xBaTiO3 (BFBT100x, x = 0.2 and 0.3) ceramics. Quenching treatment can reduce the amount of defects and Fe2+ ions and make the defect dipole in a random state, which is conducive to improving the ferroelectricity and magnetism. Compared with the conventional sintered samples, the quenched ceramics have higher remnant and saturation polarization. As for magnetism, the coercive field (Hc) of the quenched ceramics is smaller and the quenching treatment can increase the maximum magnetization by up to 15%.

Keywords:

multiferroics, bismuth ferrite (BiFeO3)-based ceramics, quenching treatment
Received: 08 March 2020 Revised: 06 May 2020 Accepted: 07 May 2020 Published: 25 June 2020 Issue date: August 2020
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Publication history

Received: 08 March 2020
Revised: 06 May 2020
Accepted: 07 May 2020
Published: 25 June 2020
Issue date: August 2020

Copyright

© The Author(s) 2020

Acknowledgements

This study was supported by the National Natural Science Foundation of China (51502054), the Postdoctoral Science Foundation of China (2014M551236), and the Postdoctoral Science Foundation of Heilongjiang Province (LBH-Z14083).

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