Existence of local polar domains in perovskite oxyfluoride, BaFeOF

Katsumata, Tetsuhiro*; Suzuki, Ryo*; Sato, Naoto*; Oda, Ryoya*; Motoyama, Shingo*; Suzuki, Shumpei*; Nakashima, Mamoru*; Inaguma, Yoshiyuki*; Mori, Daisuke*; Aimi, Akihisa*; Yoneda, Yasuhiro ; Shan, Y. J.*

A perovskite-type oxynitride BaFeOF was prepared by high-pressure synthesis. Since the SHG signal was observed in the obtained material, suggesting the existence of spontaneous polarization, the mechanism of polarization was investigated by synchrotron high-energy X-ray diffraction. The obtained pair distribution functions were fitted, and a local polarization mechanism with different orientations was found. Since BaFeOF is also a magnetic material, a magnetic domain and a ferroelectric domain are considered to coexist.

Language	:	English
Journal	:	Chemistry of Materials
Volume	:	36
Number	:	8
Pages	:	p.3697 - 3704
Publication Year/Month	:	2024/04
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Paper URL	:	https://doi.org/10.1021/acs.chemmater.3c03275
DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	ferroelectrics; local structure; synchrotron radiation
Research Facility	:	SPring-8(大型放射光施設)
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Registration No. : AA20240138
JAEA Abstracts No. : 52000681
Paper Submission No. : 28085

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