Local structures of perovskite dielectrics and ferroelectrics via pair distribution function analyses

被引:49
作者
Hou, Dong [1 ]
Zhao, Changhao [1 ,2 ]
Paterson, Alisa R. [1 ]
Li, Shengtao [2 ]
Jones, Jacob L. [1 ]
机构
[1] North Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA
[2] Xi An Jiao Tong Univ, Sch Elect Engn, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R China
基金
美国国家科学基金会;
关键词
Perovskite; Ferroelectric ceramic; Local structure; Pair distribution function; Total scattering measurement; NEUTRON TOTAL SCATTERING; X-RAY-DIFFRACTION; HIGH-PRESSURE; POWDER DIFFRACTION; ELECTROMECHANICAL RESPONSE; PROPERTY RELATIONSHIPS; POLARIZATION ROTATION; ELECTRON-DIFFRACTION; PHASE-TRANSITIONS; ATOMIC-STRUCTURE;
D O I
10.1016/j.jeurceramsoc.2017.12.003
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
The pair distribution function (PDF) method provides a useful way of characterizing the diverse and richly complex local structures in perovskite dielectric and ferroelectric materials. This review provides a basic introduction to the PDF method and the underpinning total scattering experiments. Results are reviewed from ex situ PDF that describe composition-dependent local structures and "box-car" fitting approaches to characterize longer range structures and length-scale effects. In situ PDF studies are reviewed that are sensitive to the local structural response of perovskites to temperature, electric field, and pressure. The dynamic pair-density function is also briefly introduced as well as examples of local structure analysis using combined inputs, e.g., extended Xray absorption fine structure spectroscopy, Raman spectroscopy, and first-principle calculations. These advances in advanced and integrated analysis, dynamics, and in situ methods will enable the PDF method to continue enlightening dielectrics and ferroelectrics research in the coming decades.
引用
收藏
页码:971 / 987
页数:17
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