Growth condition and ferroelectric property of Mn-doped Na0.5K0.5NbO3 crystal

被引：5

作者：

Inagaki, Yumi ^{[1
]}

Kakimoto, Ken-ichi ^{[1
]}

Ohsato, Hitoshi ^{[1
]}

机构：

[1] Nagoya Inst Technol, Grad Sch Engn, Dept Mat Sci & Engn, Showa Ku, Nagoya, Aichi 4668555, Japan

来源：

ELECTROCERAMICS IN JAPAN XI | 2009年 / 388卷

关键词：

lead-free piezoelectric crystal; alkali niobate; KF-NaF eutectic flux; P-E hysteresis loop; CERAMICS;

D O I：

10.4028/www.scientific.net/KEM.388.213

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：

Mn-doped Na0.5K0.5NbO3 (NKN) crystals have been grown by self-flux method under several heat-treatment conditions. The cooling rate affected the quality of Mn-doped NKN crystals significantly. When the cooling rate was 0.5 degrees C/min at temperatures ranging from 1050 to 950 degrees C, the synthesized Mn-doped NKN crystal exhibited a single nucleation growth, compared with multinucleation growth when the cooling rate was 0.25 degrees C/min at temperatures ranging from 1050 to 950 degrees C. The frequency dependence on the ferroelectric P-E hysteresis loop of the Mn-doped NKN crystal was not observed at measurement frequency of 0.1 - 25 Hz. The annealed 0.5 mol% Mn-doped NKN crystal exhibited excellent P-E hysteresis loop with P-r of 45.0 mu C/cm(2) and E-c of 7.2 kV/cm.

引用

页码：213 / 216

页数：4

共 4 条

[1] Phase transitional behavior and piezoelectric properties of (Na0.5K0.5)NbO3-LiNbO3 ceramics [J].