Effects of silver addition on microstructure and electrical properties of barium titanate ceramics

被引：27

作者：

Ren, Pengrong ^{[1
]}

Fan, Huiqing ^{[1
]}

Wang, Xin ^{[1
]}

Shi, Jin ^{[1
]}

机构：

[1] NW Polytech Univ, State Key Lab Solidificat Proc, Sch Mat Sci & Engn, Xian 710072, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 22期

关键词：

Composite materials; Microstructure; Dielectric response; HIGH-DIELECTRIC-CONSTANT; PERCOLATION-THRESHOLD; X7R CERAMICS; TEMPERATURE; COMPOSITES; BEHAVIOR; BATIO3; CAPACITORS;

D O I：

10.1016/j.jallcom.2011.03.077

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：

Barium titanate-silver composites were prepared by using a solid state reaction process with silver contents ranging from 0 mol% to 20 mol%. XRD results and Raman spectra indicated that there was no phase other than BaTiO(3) and Ag in the ceramics and tetragonality of barium titanate reduced with increasing Ag content. SEM images illustrated that Ag influenced densification and microstructure of BaTiO(3) ceramics. Besides, addition of Ag led to increase in dielectric permittivity and broadening of ferroelectric-paraelectric phase transition peak. Also addition of Ag had effects on dielectric loss and dc conductivity. Dielectric and conductivity properties as a function of Ag volume fraction were explained by the percolation theory. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：6423 / 6426

页数：4

共 24 条

[1]

Assal J, 1997, J AM CERAM SOC, V80, P3054, DOI 10.1111/j.1151-2916.1997.tb03232.x

[2] High-dielectric-constant ceramic-powder polymer composites [J].

Bai, Y ;

Cheng, ZY ;

Bharti, V ;

Xu, HS ;

Zhang, QM .

APPLIED PHYSICS LETTERS, 2000, 76 (25) :3804-3806

[3] Effect of silver on the sintering and grain-growth behavior of barium titanate [J].

Chen, CY ;

Tuan, WH .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2000, 83 (12) :2988-2992

[4] Effect of silver addition on the dielectric properties of barium titanate-based X7R ceramics [J].

Chen, RZ ;

Wang, XH ;

Gui, ZL ;

Li, LT .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2003, 86 (06) :1022-1024

[5] EFFECTIVE DIELECTRIC-CONSTANT OF A METAL-DIELECTRIC COMPOSITE [J].

CHYLEK, P ;

SRIVASTAVA, V .

PHYSICAL REVIEW B, 1984, 30 (02) :1008-1009

[6] Effect of sintering temperature on the percolation threshold and the dielectric properties Ca[(Li1/3Nb2/3)1-x Tix]O3-δ - Ag composite [J].

George, Sumesh ;

Sebastian, Mailadil Thomas .

COMPOSITES SCIENCE AND TECHNOLOGY, 2008, 68 (12) :2461-2467

[7] CRITICAL-BEHAVIOR OF THE DIELECTRIC-CONSTANT OF A RANDOM COMPOSITE NEAR THE PERCOLATION-THRESHOLD [J].

GRANNAN, DM ;

GARLAND, JC ;

TANNER, DB .

PHYSICAL REVIEW LETTERS, 1981, 46 (05) :375-378

[8] Colossal permittivity in ultrafine grain size BaTiO3-x and Ba0.95La0.05TiO3-x materials [J].

Guillemet-Fritsch, Sophie ;

Valdez-Nava, Zarel ;

Tenailleau, Christophe ;

Lebey, Thierry ;

Durand, Bernard ;

Chane-Ching, Jean-Yves .

ADVANCED MATERIALS, 2008, 20 (03) :551-+

[9] Effect of silver addition on the dielectric properties of barium titanate based low temperature processed capacitors [J].

Halder, N ;

Das Sharma, A ;

Khan, SK ;

Sen, A ;

Maiti, HS .

MATERIALS RESEARCH BULLETIN, 1999, 34 (04) :545-550

[10]

HAWANG HJ, 1997, J AM CERAM SOC, V80, P791

← 1 2 3 →