Crystal structure and dielectric properties of Ba6_xCaxTi2Nb8O30 tungsten bronze ceramics

被引：0

作者：

Someya, Ryusuke ^{[1
]}

Shan, Yue Jin ^{[1
]}

Tezuka, Keitaro ^{[1
]}

机构：

[1] Utsunomiya Univ, Grad Sch Reg Dev & Creat, Grad Program Mat & Environm Chem, Div Engn & Agr, Utsunomiya 3218585, Japan

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2023年 / 131卷 / 07期

关键词：

Tungsten bronze structure; Rietveld refinement; Dielectric properties; Relaxor ferroelectric; PHASE; FERROELECTRICS; SUBSTITUTION; EU; ND; LA;

D O I：

10.2109/jcersj2.22170

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：

Tungsten bronze oxide solid solution Ba6_xCaxTi2Nb8O30 with space group P4bm (No. 100) was prepared by solid state reaction method. Rietveld refinements revealed a decrease in the volume of the unit cell and distortion of the Ti(Nb)O6 octahedra with increasing Ca substitution. Ca substitution increased ferroelectric transition temperature TC and coercive electric field EC of the samples, decreased their dielectric losses D, and gradually declined the frequency dependence of the dielectric constants. & COPY;2023 The Ceramic Society of Japan. All rights reserved.

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页码：236 / 241

页数：6

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