Dielectric Properties and Electrical Conductivity of Li0.07Na0.93Ta0.1Nb0.9O3 and Li0.07Na0.93Ta0.111Nb0.889O3

被引：5
|
作者：
Palatnikov, M. N. [1 ]
Sandler, V. A. [2 ]
Efremov, V. V. [1 ]
Sidorov, N. V. [1 ]
Kalinnikov, V. T. [1 ]
机构：
[1] Russian Acad Sci, Tananaev Inst Chem & Technol Rare Elements & Mine, Kola Sci Ctr, Apatity 184209, Murmansk Oblast, Russia
[2] Ivanovo State Univ, Ivanovo 153025, Russia
来源：
INORGANIC MATERIALS | 2011年 / 47卷 / 11期
关键词：
SOLID-SOLUTIONS; PRESSURE; LIXNA1-XNBO3;
D O I：
10.1134/S0020168511110185
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The dielectric properties and electrical conductivity of the ferroelectric perovskite solid solutions Li0.07Na0.93Ta0.1Nb0.9O3 and Li0.07Na0.93Ta0.111Nb0.889O3 have been studied at temperatures from 290 to 700 K and frequencies from 25 Hz to 1 MHz. In this temperature range, the solid solutions undergo a first-order ferroelectric phase transition. Li0.07Na0.93Ta0.111Nb0.889O3 (prepared from coprecipitated Ta2yNb2(1-y)O5 pentoxides) has a markedly lower Curie temperature (by similar to 75 K) and higher ionic conductivity and high-frequency dielectric permittivity in comparison with Li0.07Na0.93Ta0.1Nb0.9O3 (prepared from a mechanical mixture of Ta2O5 and Nb2O5).
引用
收藏
页码：1242 / 1248
页数：7
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