Preparation, characterization and dielectric properties of Sr5LnTi3Ta7O30 (Ln = La, Nd) ceramics

被引：17

作者：

Fang, L ^{[1
]}

Zhang, H ^{[1
]}

Yang, JF ^{[1
]}

Hong, XK ^{[1
]}

Meng, FC ^{[1
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2004年 / 15卷 / 06期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1023/B:JMSE.0000025677.53710.c8

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Sr(5)LnTi(3)Ta(7)O(30) (Ln = La, Nd) ceramics were prepared by the conventional high temperature solid state reaction route. The sintered samples were characterized by X-ray diffraction and scanning electron microscopy methods. SLTT and SNTT belong to paraelectric phases of filled tetragonal TB structure at room temperature. SLTT and SNTT ceramics show high dielectric constant of 131 and 116 together with low dielectric loss 0.008 and 0.0036 at 1 MHz, respectively. In comparison with Ba-based ceramics with TB structure, the temperature coefficients of the dielectric constant (tau(epsilon)) are significantly reduced. (C) 2004 Kluwer Academic Publishers.

引用

页码：355 / 357

页数：3

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