Towards enhanced varistor property and lower dielectric loss of CaCu3Ti4O12 based ceramics

被引：64

作者：

Li, Jianying ^{[1
]}

Wu, Kangning ^{[1
]}

Jia, Ran ^{[1
]}

Hou, Linlin ^{[1
]}

Gao, Lu ^{[1
]}

Li, Shengtao ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China

来源：

MATERIALS & DESIGN | 2016年 / 92卷

关键词：

CaCu3Ti4O12; Composite ceramics; Varistor performance; Dielectric properties; PEROVSKITE; BEHAVIOR;

D O I：

10.1016/j.matdes.2015.12.073

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel (1 - x)CaCu3Ti4O12-xY2/3Cu3Ti4O12 composite ceramic was developed. Two perovskite-like grains, i.e. CaCu3Ti4O12 grains of 1-2 mu m and Y2/3Cu3Ti4O12 grains of 4-6 mu m, can be both detected in the samples. High Schottcky barrier height and grain boundary resistance were formed via combining these two perovslcite-like phases, which plays the critical role on the varistor and dielectric performance. Greatly enhanced nonlinear coefficient of 9.88 and very low dielectric loss of 0.02 can be achieved in the composite ceramics accompanied with the permittivity of similar to 2000, compared with reported results of 2-6 and 0.05-0.8 for general CaCu3Ti4O12 ceramics. This varistor-capacitor multifunctional characteristic makes it a promising material in the field of over voltage protections of electronic devices. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：546 / 551

页数：6

共 32 条

[1]

Adams TB, 2002, ADV MATER, V14, P1321, DOI 10.1002/1521-4095(20020916)14:18<1321::AID-ADMA1321>3.0.CO

[2]

2-P

[3] Dielectric properties of BaTiO3 (BTO)-CaCu3Ti4O12 (CCTO) composite screen-printed thick films for high dielectric constant devices in the medium frequency (MF) range [J].

Almeida, AFL ;

Fechine, PBA ;

Góes, JC ;

Valente, MA ;

Miranda, MAR ;

Sombra, ASB .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2004, 111 (2-3) :113-123

[4] Enhancement of ferroelectricity in strained BaTiO3 thin films [J].

Choi, KJ ;

Biegalski, M ;

Li, YL ;

Sharan, A ;

Schubert, J ;

Uecker, R ;

Reiche, P ;

Chen, YB ;

Pan, XQ ;

Gopalan, V ;

Chen, LQ ;

Schlom, DG ;

Eom, CB .

SCIENCE, 2004, 306 (5698) :1005-1009

[5] Effect of Al doping on the electric and dielectric properties of CaCu3Ti4O12 [J].

Choi, Sung-Woo ;

Hong, Seong-Hyeon ;

Kim, Young-Min .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2007, 90 (12) :4009-4011

[6] Electrical properties of Na1/2Bi1/2TiO3-BaTiO3 ceramics [J].

Chu, BJ ;

Chen, DR ;

Li, GR ;

Yin, QR .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2002, 22 (13) :2115-2121

[7] Strong nonlinear current-voltage behaviour in perovskite-derivative calcium copper titanate [J].

Chung, SY ;

Kim, ID ;

Kang, SJL .

NATURE MATERIALS, 2004, 3 (11) :774-778

[8] Partial conductivities in SrTiO3: Bulk polarization experiments, oxygen concentration cell measurements, and defect-chemical modeling [J].

Denk, I ;

Munch, W ;

Maier, J .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1995, 78 (12) :3265-3272

[9] Effects of Cu stoichiometry on the micro structures, barrier-layer structures, electrical conduction, dielectric responses, and stability of CaCu3Ti4O12 [J].

Fang, Tsang-Tse ;

Mei, Li-Then ;

Ho, Hei-Fong .

ACTA MATERIALIA, 2006, 54 (10) :2867-2875

[10] Optical response of high-dielectric-constant perovskite-related oxide [J].

Homes, CC ;

Vogt, T ;

Shapiro, SM ;

Wakimoto, S ;

Ramirez, AP .

SCIENCE, 2001, 293 (5530) :673-676

← 1 2 3 4 →