Phase Formation, Structure, and Dielectric Properties of Modified Potassium Sodium Niobate Ceramics

被引：5

作者：

Kaleva, G. M. ^{[1
]}

Politova, E. D. ^{[1
]}

Mosunov, A., V ^{[2
]}

Stefanovich, S. Yu ^{[2
]}

机构：

[1] Semenov Fed Res Ctr Chem Phys, Moscow 119991, Russia

[2] Moscow MV Lomonosov State Univ, Moscow 119991, Russia

来源：

INORGANIC MATERIALS | 2020年 / 56卷 / 10期

基金：

俄罗斯基础研究基金会;

关键词：

potassium sodium niobate; ceramics; phase formation; perovskite structure; ferroelectric and dielectric properties; PIEZOELECTRIC PROPERTIES; SINTERING TEMPERATURE; ELECTRICAL-PROPERTIES; MICROSTRUCTURE; TRANSITIONS; ADDITIVES; BISCO3;

D O I：

10.1134/S0020168520100076

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have prepared (1 -x)(K0.5Na0.5)NbO3-xCa(Cu1/3Nb2/3)O-3(x= 0-0.1, Delta x = 0.02) ceramics by solid-state reactions and studied their phase formation, structure, and dielectric and ferroelectric properties. The formation of a phase with the perovskite structure and an orthorhombic unit cell has been demonstrated in all of the samples. Ferroelectric phase transitions have been confirmed by dielectric spectroscopy and laser second harmonic generation measurements. The temperatures of the phase transitions from the orthorhombic ferroelectric phase to the tetragonal ferroelectric phase and to the cubic (paraelectric) phase have been shown to decrease with increasingx. We have analyzed the composition dependences of dielectric parameters in the system studied.

引用

页码：1072 / 1078

页数：7

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