Piezoelectric single crystal Pb[(Zn1/3Nb2/3)0.93Ti0.07]O3 (PZNT 93/7) for ultrasonic transducers

被引：16

作者：

Harada, K

Hosono, Y

Kobayashi, T

Yamashita, Y

Wada, S

Tsurumi, T

机构：

[1] Toshiba Co Ltd, Power Supply Mat & Devices Lab, Ctr Corp Res & Dev, Saiwai Ku, Kawasaki, Kanagawa 2128582, Japan

[2] Tokyo Inst Technol, Dept Met & Ceram Sci, Grad Sch Sci & Engn, Meguro Ku, Tokyo 1528552, Japan

来源：

JOURNAL OF CRYSTAL GROWTH | 2002年 / 237卷

关键词：

Bridgman technique; perovskites; piezoelectric materials;

D O I：

10.1016/S0022-0248(01)02050-4

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Pb [(Zn1/3Nb2/3)(0.93)Ti-0.07] O-3(PZNT 93/7) single crystals 40 mm diameter were grown by solution Bridgman method. The prerequisites for growth of PZNT 93/7 single crystals Lire higher melting temperature, longer melting time than Pb [(Zn1/3Nb2/3)(0.91)Ti-0.09] O-3 (PZNT 91/9) and ZnO addition. The Curie temperature is 155-175degreesC and the temperature, which corresponds to rhombohedral-tetragonal phase change. T-rt, is higher than 110degreesC for PZNT 93/7 single crystal. The T-rt corresponds to the degradation boundary temperature of electromechaniical coupling coefficient, k(33), also. The sensitivity degradation of ultrasonic transducers using PZNT 93/7 single crystal can be prevented up to a high temperature, about 100degreesC. Therefore, the results indicated that PZNT 93/7 has good potential for application in the mass production of ultrasonic transducers. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：848 / 852

页数：5

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