Effects of the Domain Size on Local d33 in Tetragonal (Na0.53 K0.45Li0.02)(Nb0.8Ta0.2)O3 Ceramics

被引：26

作者：

Duc-Thang Le ^{[1
]}

Kwon, So-Jung ^{[1
]}

Yeom, Na-Ri ^{[1
]}

Lee, Young-Jin ^{[1
]}

Jeong, Young-Hun ^{[1
]}

Chun, Myoung-Pyo ^{[1
]}

Nam, Joong-Hee ^{[1
]}

Paik, Jong-Hoo ^{[1
]}

Kim, Byung-Ik ^{[1
]}

Cho, Jeong-Ho ^{[1
]}

机构：

[1] Korea Inst Ceram Engn & Technol, Elect Components Ctr, Seoul 153023, South Korea

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2013年 / 96卷 / 01期

关键词：

ENHANCED PIEZOELECTRIC PROPERTIES; PIEZORESPONSE FORCE MICROSCOPY; BARIUM-TITANATE CERAMICS; SINGLE-CRYSTALS; FERROELECTRIC DOMAINS; BATIO3; CERAMICS; DEPENDENCE;

D O I：

10.1111/j.1551-2916.2012.05445.x

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：

Lead-free (Na0.53K0.45Li0.02)(Nb0.8Ta0.2)O3 (NKLNT) was prepared using a conventional cold-pressing method. A commercial piezoresponse force microscope (PFM) was applied to observe the domain structures of NKLNT ceramics. The typical configuration of the ferroelectric domain was analyzed in abnormal grains with grain sizes that exceeded 40 mu m, where tetragonal 90 degrees domains are predominant. The local piezoresponse hysteresis loops were characterized and studied as a function of the domain width (dw) in the range 3001000 nm. It was found that the amplitude signals increased and the coercive field reduced significantly with a decrease in the domain size. Finally, the local longitudinal piezoelectric coefficient (d33) increased as the domain size decreased.

引用

页码：174 / 178

页数：5

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