Atomic scale octahedral distortion and enhanced collective polarity underlying large polarization in ferroelectric perovskite oxides
aYunnan Key Laboratory of Electromagnetic Materials and Devices, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming, 650091, China
bElectron Microscopy Center, Yunnan University, Kunming, 650091, China
cSchool of Engineering, Yunnan University, Kunming, 650091, China
dSouthwest United Graduate School, Kunming, 650091, China
* Yunnan Key Laboratory of Electromagnetic Materials and Devices, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming, 650091, China.
E-mail addresses: wang.jian@ynu.edu.cn (J. Wang)
** Yunnan Key Laboratory of Electromagnetic Materials and Devices, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming, 650091, China.
huwanbiao@ynu.edu.cn (W. Hu).
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