Evolution of domain structure in 0.96(K_(0.48)Na_(0.52))(Nb_(0.96)Sb_(0.04))O_(3)0.04(Bi_(0.50)Na_(0.50))ZrO_(3) ceramics with poling and temperature  

作　　者：Jialiang Zhang Chunming Zhou 

机构地区：[1]School of Physics,State Key Laboratory of Crystal Materials,Shandong University,Jinan,250100,China

出　　处：《Journal of Materiomics》2022年第1期9-17,共9页无机材料学学报（英文）

基　　金：financially supported by the National Natural Science Foundation of China(Grant No.51972196);Shandong Provincial Natural Science Foundation,China(Grants No.ZR2019MEM07).

摘　　要：Domain structure often has significant influences on both piezoelectric properties and piezoelectric temperature stability of a ferroelectric ceramic.In-depth studies on the characters of domain structure should be helpful for the better understanding of piezoelectric performance.In this work,the evolution of domain structure in large-d_(33)0.96(K_(0.48)Na_(0.52))(Nb_(0.96)Sb_(0.04))O_(3)-0.04(Bi_(0.50)Na_(0.50))ZrO_(3) ceramics with poling and temperature was systematically investigated via comparing the various domain patterns that are obtained by acid-etching.It was found that domain structure changes greatly upon poling and varies largely with temperature.Complex domain patterns consisting of long narrow parallel stripes or herringbone structure separated by 180°domain boundaries are observed in the unpoled ceramics at room temperature.Domain patterns become less complicated upon poling,due to the collective polarization reversals of parallel-stripe domain clusters and banded fine-stripe domain segments.Parallel stripes and herringbone bands become much wider upon poling,as some narrow stripes and herringbone bands coalesce into broad ones,respectively.Hierarchical domain structure is commonly seen in the domain patterns acid-etched at room temperature,but is less frequently recognized at elevated temperatures.Schematic models of domain configurations were proposed to explain the domain structure and its evolution with poling.

关 键 词：(K Na)NbO_(3)-Based piezoelectric ceramics Domain structure Domain configurations Acid-etching POLING 

分 类 号：TQ174.1[化学工程—陶瓷工业]