Local structure study of phase transition behavior in Ba(Ti,Sn)O3 perovskite by X-ray absorption fine structure

被引：15
作者：
Bootchanont, Atipong [1 ]
Rujirawat, Saroj [2 ,3 ]
Yimnirun, Rattikorn [2 ,3 ]
Guo, Ruyan [4 ]
Bhalla, Amar [4 ]
机构：
[1] Rajamangala Univ Technol Thanyaburi RMUTT, Div Phys, Fac Sci & Technol, Pathum Thani 12110, Thailand
[2] Suranaree Univ Technol, Sch Phys, Inst Sci, Nakhon Ratchasima 30000, Thailand
[3] Suranaree Univ Technol, COE NANOTEC SUT Adv Funct Nanomat, Nakhon Ratchasima 30000, Thailand
[4] Univ Texas San Antonio, Dept Elect & Comp Engn, Coll Engn, San Antonio, TX 78249 USA
来源：
CERAMICS INTERNATIONAL | 2016年 / 42卷 / 07期
关键词：
Relaxor; Phase transition; Local structure; XANES;
D O I：
10.1016/j.ceramint.2016.02.021
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this work, BaTi1-xSnxO3 (BST) powders (x=0-0.95) were synthesized by a conventional mixed-oxide method. The phase information was investigated by a combination of X-ray diffraction and X-ray absorption spectroscopy techniques. The XRD measurements indicated the global phase transition from tetragonal to cubic perovskite structure. From the synchrotron X-ray Absorption Near-Edge Structure (XANES) measurements at the Ti K-edge and Sn L-3-edge, it was seen that an increase of Sn content in BaTiO3 affected the phase transition behavior and local structure of BST. In addition, the local structure of Ba(Ti,Sn)O-3 materials were experimentally determined and compared with that obtained from the simulation. The local structure obtained from the XANES technique provided additional structural information unavailable from XRD investigation. Finally, the phase transition behavior from relaxor ferroelectric to polar cluster in BST system was discussed and attributed mainly to the change in the local structure. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：8151 / 8154
页数：4
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