Growth of La3-xBaxTa0.5+x/2Ga5.5-x/2O14 compounds for the high-temperature piezoelectric applications

被引：3

作者：

Jung, HI ^{[1
]}

Yang, WJ

Yoshikawa, A

Fukuda, T

Auh, KH

机构：

[1] Hanyang Univ, CPRC, Seoul 133791, South Korea

[2] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF CRYSTAL GROWTH | 2004年 / 262卷 / 1-4期

关键词：

crystal structure; single crystal growth; oxides; piezoelectric materials;

D O I：

10.1016/j.jcrysgro.2003.10.024

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Alkali-earth ion (Ba2+) substituted La3Ta0.5Ga5.5O14 (LTG) crystals with a chemical formula of La3-xBax Ta0.5+x/2Ga5.5-x/2O14 (LBTG), suitable for piezoelectric applications, were grown by the micro-pulling-down (mu-PD) and Czochralski technique. Powder X-ray diffraction analysis had been shown that Ba2+ could be substituted for La3+ up to x = 0.2 in LTG crystals. A structure analysis revealed that Ba atoms are mainly distributed in decahedral sites occupied by La atoms. Grown LBTG crystals showed higher value of d(14) and K-12 than LTG. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：40 / 47

页数：8

共 18 条

[1] Czochralski growth and characterization of piezoelectric single crystals with langasite structure:: La3Ga5SiO14 (LGS), La3Ga5.5Nb0.5O14 (LCN) and La3Ga5.5Ta0.5O14 (LGT) II.: Piezoelectric and elastic properties [J].