Growth and ferroelectric/piezoelectric properties of (K,Na)(Nb,Ta)O3 ferroelectric single crystals

被引：2

作者：

Hattori, Takuya ^{[1
]}

Kitanaka, Yuuki ^{[1
]}

Noguchi, Yuji ^{[1
]}

Miyayama, Masaru ^{[1
]}

机构：

[1] Univ Tokyo, RCAST, Meguro Ku, Tokyo 1538904, Japan

来源：

ELECTROCERAMICS IN JAPAN XV | 2013年 / 566卷

关键词：

ferroelectrics; piezoelectrics; pottasium sodium niobate (KNN); potassium sodium niobate tantalate (KNNT); single crystals; PIEZOELECTRIC PROPERTIES; CERAMICS;

D O I：

10.4028/www.scientific.net/KEM.566.64

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：

Single crystals of (K,Na)Nb1-xTaxO3 (KNNT) were grown by the top-seeded solution growth (TSSG) method under high oxygen pressure atmosphere (Po-2 = 0.9 MPa), and their dielectric properties were investigated along [100](cubic) (the cubic notation). KNNT single crystals in a composition range of 0 <= x <= 0.65 were successfully obtained. Through the measurements of x-ray diffraction and dielectric properties, we propose a temperature (T)-composition (x) phase diagram in the KNNT system in which a successive phase transition from orthorhombic (Amm2), tetragonal (P4mm) to cubic (Pm (3) over barm) occurs with increases in T and x.

引用

页码：64 / 67

页数：4

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