Decomposition reactions in CaCu3Ti4O12 ceramics

被引：27

作者：

Adams, Timothy B. ^{[1
]}

Sinclair, Derek C. ^{[1
]}

West, Anthony R. ^{[1
]}

机构：

[1] Univ Sheffield, Dept Mat Engn, Sheffield S1 3JD, S Yorkshire, England

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2006年 / 89卷 / 09期

关键词：

D O I：

10.1111/j.1551-2916.2006.01174.x

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：

CaCu3Ti4O12 (CCTO) ceramics sintered in air at 1115 degrees C for 3 and 24 h have been heat treated in N-2 at 1000 degrees C. Surface layers develop on the outer regions of the ceramics, and a combination of X-ray diffraction and analytical electron microscopy has been used to establish the phase content of the layers. A model to explain the formation of the surface layers is proposed based on decomposition of CCTO into a mixture of CaTiO3, TiO2, and Cu2O. The role of limited decomposition in the development of electrically inhomogeneous CCTO ceramics prepared at elevated temperatures in air is discussed.

引用

页码：2833 / 2838

页数：6

共 12 条

[1] Characterization of grain boundary impedances in fine- and coarse-grained CaCu3Ti4O12 ceramics -: art. no. 094124 [J].

Adams, TB ;

Sinclair, DC ;

West, AR .

PHYSICAL REVIEW B, 2006, 73 (09)

[2]

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

[3]

2-P

[4]

ADAMS TB, IN PRESS J AM CERAM

[5] 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

[6]

Fang TT, 2004, J AM CERAM SOC, V87, P2072, DOI 10.1111/j.1151-2916.2004.tb06362.x

[7] Dielectric and magnetic properties of Fe- and Nb-doped CaCu3Ti4O12 -: art. no. 104111 [J].

Grubbs, RK ;

Venturini, EL ;

Clem, PG ;

Richardson, JJ ;

Tuttle, BA ;

Samara, GA .

PHYSICAL REVIEW B, 2005, 72 (10)

[8] Comparison between quantum confinement effects of quantum wires and dots [J].

Li, JB ;

Wang, LW .

CHEMISTRY OF MATERIALS, 2004, 16 (21) :4012-4015

[9]

Moulson A. J., 1990, ELECTROCERAMICS MAT

[10] CaCu3Ti4O12:: One-step internal barrier layer capacitor [J].

Sinclair, DC ;

Adams, TB ;

Morrison, FD ;

West, AR .

APPLIED PHYSICS LETTERS, 2002, 80 (12) :2153-2155

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