Local structure analysis of Bi0.5Na0.5TiO3-BaTiO3 solid solutions

被引：4
|
作者：
Yoneda, Yasuhiro [1 ]
Kobayashi, Tohru [1 ]
Tsuji, Takuya [1 ]
Matsumura, Daiju [1 ]
Saitoh, Yuji [1 ]
Noguchi, Yuji [2 ]
机构：
[1] Japan Atom Energy Agcy JAEA, Energy & Environm Mat Sci Div, Sayo, Hyogo 6795148, Japan
[2] Kumamoto Univ, Fac Adv Sci & Technol, Div Informat & Energy, Kurokami, Kumamoto 8608555, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2023年 / 62卷 / SM期
关键词：
local structure; pair-distribution function analysis; Bi0 5Na0 5TiO3 solid solutions; lead-free piezoelectrics; MORPHOTROPIC PHASE-BOUNDARY; FREE PIEZOELECTRIC CERAMICS; ELECTRONIC-STRUCTURE; 3-DIMENSIONAL VISUALIZATION; ELECTRICAL-PROPERTIES; TEMPERATURE; TRANSITIONS; BEAMLINE; SPRING-8; SYSTEM;
D O I：
10.35848/1347-4065/ace3cd
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Solid solutions of Bi0.5Na0.5TiO3 (BNT) and BaTiO3 (BT) with ABO(3)-type perovskite system is known to possess good ferroelectric properties. A local structural analysis and an electronic structure analysis of high-quality BNT-BT solid solutions were performed using synchrotron radiation X-rays to clarify the mechanism of the enhanced ferroelectric properties. The BNT-BT solid solution undergoes a series of phase transitions to tetragonal structures with space groups P4bm and P4mm. The local structure analysis revealed reduced off-center shift of A-site atoms resulting of the BT substitution. The local structure obtained by high-energy X-ray total scattering is consistent with the electronic structure obtained by X-ray absorption spectroscopy.
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页数：8
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