Simultaneous realization of broad temperature stability range and outstanding dielectric performance in (Ag+, Ta5+) co-doped TiO2 ceramics

被引：32

作者：

Peng, Hui ^{[1
]}

Liang, Pengfei ^{[2
]}

Wu, Di ^{[1
]}

Zhou, Xiaobin ^{[1
]}

Peng, Zhanhui ^{[1
]}

Xiang, Yichen ^{[1
]}

Chao, Xiaolian ^{[1
]}

Yang, Zupei ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Key Lab Macromol Sci Shaanxi Prov, Shaanxi Key Lab Adv Energy Devices, Shaanxi Engn Lab Adv Energy Technol,Sch Mat Sci &, Xian 710062, Shaanxi, Peoples R China

[2] Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Shaanxi, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 783卷

基金：

中国国家自然科学基金;

关键词：

Ceramics; Dielectric properties; Sintering conditions; Temperature stability; COLOSSAL PERMITTIVITY PROPERTIES; CACU3TI4O12; AL;

D O I：

10.1016/j.jallcom.2018.12.321

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Effects of sintering condition on dielectric properties and microstructure were systematically investigated in (Ag1/4Ta3/4)(0.005)Ti0.995O2 ceramics. A giant dielectric constant of similar to 9831 (1 kHz) and a relatively low dielectric loss of similar to 0.041 (1 kHz) were realized at the optimal sintering condition of 1330 degrees C with a holding time for 10 h. Notably, stable temperature coefficient (within -6.8% to 8.8%) of the dielectric constant at 10 kHz was achieved in a broader temperature range (-200-200 degrees C), which shows superior temperature stability of our sample than the application requirements (-55-200 degrees C and Delta(epsilon r)/epsilon(25 degrees C)< +/- 15%) of commercial X9R capacitor. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：423 / 427

页数：5

共 27 条

[1] (Al3+, Nb5+) co-doped CaCu3Ti4O12: An extended approach for acceptor-donor heteroatomic substitutions to achieve high-performance giant-dielectric permittivity [J].