Effects of Complex Additives on Structure, Phase Transitions and Dielectric Properties of BSPT Ceramics

被引：1

作者：

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

Golubko, N. V. ^{[1
]}

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

Mosunov, A. V. ^{[1
]}

Stefanovich, S. Yu. ^{[1
]}

Segalla, A. H. ^{[2
]}

机构：

[1] L Ya Karpov Inst Phys Chem, Obukha S St,3-1-12,B-6, Moscow 105064, Russia

[2] ELPA Com, Moscow 124460, Russia

来源：

ELECTROCERAMICS XIV CONFERENCE | 2014年 / 1627卷

基金：

俄罗斯基础研究基金会;

关键词：

BiScO3-PbTiO3 ceramic solid solutions; Morphotropic Phase Boundary; CaCl2/KCl additives; ferroelectric phase transitions; PIEZOELECTRIC PROPERTIES;

D O I：

10.1063/1.4901662

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：

Influence of complex CaCl2/KCl additive with low melting temperature similar to 870 K on structure, dielectric and polar properties of ceramic solid solutions on the base of composition from Morphotropic Phase Boundary in the system (1-x)BiScO3-xPbTiO(3)(x=0.635, 0.64, 0.645) was studied. Using initial compositions prepared from nitrates solutions dense single phase ceramic samples doped by the additives in amounts up to 5 w.% were obtained at 1320 K. Variations in relative content of rhombohedral and tetragonal phases, changes of crystal structure parameters, and polar properties were observed depending on both x value and amount of additive. Temperature of the 1st order ferroelelctric phase transitions decreased from similar to 700 K to 630-650 K in the doped samples due to the introduction of Ca2+/K+ ions into A sites of perovskite lattice.

引用

页码：81 / 86

页数：6

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