Dielectric and pyroelectric properties of the Ba0.3Na0.7Ti0.3Nb0.7O3 ceramics obtained by sol-gel method

被引：12

作者：

Cwikiel, K.

Nogas-Cwikiel, E.

机构：

[1] Univ Silesia, Fac Comp Sci & Mat Sci, PL-41200 Sosnowiec, Poland

[2] Univ Silesia, A Chelkowski Inst Phys, PL-40007 Katowice, Poland

来源：

PHASE TRANSITIONS | 2007年 / 80卷 / 1-2期

关键词：

D O I：

10.1080/01411590601090575

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The solid solution of barium titanate (BaTiO3) and sodium niobate (NaNbO3)Ba1-xNaxTi1-xNbxO3 (BNTN) is a new lead-free material. BNTN ceramics obtained by the conventional ceramic method possess the classical ferroelectric behaviour when 0 < x < 0.075 and 0.55 < x < 1 and relaxor behaviour when 0.075 <= x <= 0.55 [1]. In this work we present the results of the investigations of the dielectric and pyroelectric properties of the Ba1-xNaxTi1-xNbxO3 ceramics for x = 0.7 obtained, for the first time, from sol-gel derived powders. The temperature dependences of the dielectric permittivity epsilon'(T) within the frequency range 65 Hz-1 MHz and the pyroelectric current were investigated. The temperature range of the measurements was 90-470 K.

引用

页码：141 / 146

页数：6

共 5 条

[1] Dielectric proprieties of ferroelectric ceramics derived from the system BaTiO3-NaNbO3-based solid solutions [J].