Effects of Na Contents in (K0.47Li0.03Na0.50+x)(Nb0.8Ta0.2)O3 Piezoelectric Ceramics

被引：3

作者：

Kim, S. W. ^{[1
]}

Sung, Y. S. ^{[1
]}

Kim, M-H. ^{[1
]}

Song, T. K. ^{[1
]}

Kim, S. S. ^{[2
]}

Jeon, J-H. ^{[3
]}

机构：

[1] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Chang Won 641773, South Korea

[2] Changwon Natl Univ, Dept Phys, Chang Won 641773, South Korea

[3] Korea Inst Mat Sci, Funct Nano Powder Mat Grp, Chang Won 641831, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2010年 / 57卷 / 04期

关键词：

Lead-free; Piezoelectric; Stoichiometry; Phase transition; FERROELECTRIC PROPERTIES; DIELECTRIC-PROPERTIES; SYSTEM; MICROSTRUCTURE;

D O I：

10.3938/jkps.57.1127

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effects of Na ion content were investigated in (K0.47Li0.03Na0.50+x)(Nb0.8Ta0.2)O-3 (KLNNT) piezoelectric ceramics prepared by using a solid state reaction method. The content of Na was controlled from -4 to 4 mol%. The best piezoelectric constant of 191 pC/N was observed for the nominally stoichiometric composition x = 0.0. The improved piezoelectric property was attributed to the polymorphic phase transition from a tetragonal phase to an orthorhombic phase observed by using X-ray diffraction and temperature-dependent dielectric constants.

引用

页码：1127 / 1130

页数：4

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