Dielectric properties of PI hybrid film doped by CaCu3Ti3.95Zr0.05O12 ceramics with different particle sizes

被引：10

作者：

Chi, Q. G. ^{[1
,2
]}

Zhang, C. H. ^{[1
]}

Wang, X. ^{[1
,3
]}

Sun, J. ^{[1
]}

Gao, L. ^{[1
]}

Wang, X. ^{[1
,3
]}

Lei, Q. Q. ^{[1
]}

机构：

[1] Harbin Univ Sci & Technol, Minist Educ, Sch Appl Sci, Key Lab Engn Dielect & Its Applicat, Harbin 150080, Peoples R China

[2] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China

[3] Qing Sheng Ind Co Daqing Oilfield, Daqing 163416, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 09期

关键词：

Powders: chemical preparation; Sol-gel process; Interfaces; Dielectric properties; CONSTANT; PERMITTIVITY; PERFORMANCE; FABRICATION; COMPOSITES; BEHAVIOR;

D O I：

10.1016/j.ceramint.2014.06.110

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：

Micro-CaCu3Ti3.95Zr0.05O12 (CCTZO) ceramics were prepared by a sol-gel method and sintered at 1050 degrees C for different times. The particle sizes and dielectric permittivity simultaneously increase with the sintering time. The permittivity of CCTZO sintered for 24 h is 3.3 x 10(5) at 100 Hz, markedly higher than that of CCTZO sintered for 1 h and 12 h. On the contrary, the permittivity of CCTZO/PI films declines with the sintering time. The permittivity of CCTZO (sintered for 1 h)/PI film with 40 vol% filler is 64 at 100 Hz, higher than those of the CCTZO (sintered for 24 h and 12 h)/PI film. This indicates that the permittivity of CCTZO/PI composites was affected more by the particle size than the permittivity of CCTZO ceramics, and we can draw a conclusion that the dielectric mechanism of micro-ceramic/polymer composites comes mainly from interfacial polarization effect. (c) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：15045 / 15049

页数：5

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