Microstructure Control of Barium Titanate - Potassium Niobate Solid Solution System Ceramics by MPB Engineering and Their Piezoelectric Properties

被引：6

作者：

Shimizu, Shigehito ^{[1
]}

Kumada, Nobuhiro ^{[1
]}

Nakashima, Kouichi ^{[1
]}

Fujii, Ichiro ^{[1
]}

Tanaka, Daisuke ^{[2
]}

Furukawa, Masahito ^{[2
]}

Kuroiwa, Yoshihiro ^{[3
]}

Suzuki, Tohru ^{[4
]}

Uchikoshi, Tetsuo ^{[4
]}

Sakka, Yoshio ^{[4
]}

Wada, Satoshi ^{[1
]}

机构：

[1] Univ Yamanashi, Interdisciplinary Grad Sch Med & Engn, Mat Sci & Technol, 4-4-37 Takeda, Kofu, Yamanashi 4008510, Japan

[2] TDK Co Ltd, Mat Proc Dev Ctr, Chiba 2868588, Japan

[3] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan

[4] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

来源：

ELECTROCERAMICS IN JAPAN XIV | 2011年 / 485卷

关键词：

barium titanate; potassium niobate; interface region; piezoelectric property; MPB engineering;

D O I：

10.4028/www.scientific.net/KEM.485.89

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：

Effect of the microstructural homogeneity of 0.5 BaTiO3 - 0.5 KNbO3 (0.5BT-0.5KN) solid solution ceramics on the dielectric and piezoelectric properties was investigated. Microstructure of a sample prepared by a conventional sintering method was homogenous, and the room temperature crystal structure was assigned to cubic Pm3m symmetry and therefore the sample was paraelectric. On the other hand, microstructure of samples prepared by a two-step sintering method was inhomogeneous, that is, it was made of BT and KN grains. The large electric field piezoelectric constant d(33)* increased with increasing interface area.

引用

页码：89 / +

页数：2

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