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
收藏
页码：1127 / 1130
页数：4
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