Effects of Bi2O3 and Cr2Ti3O9 Co-doping on dielectric properties in BaTiO3-based ceramics

被引：6

作者：

Liu, Dan ^{[1
]}

Pu, Yongping ^{[1
]}

Shi, Xuan ^{[1
]}

机构：

[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Xian 710021, Shaanxi, Peoples R China

来源：

VACUUM | 2012年 / 86卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Dielectric properties; Defects; Co-doping; BaTiO3; TEMPERATURE;

D O I：

10.1016/j.vacuum.2012.03.035

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A microwave ceramic with general composition (1-x-y) BaTiO3 + x Cr2Ti3O9 + y Bi2O3 has been prepared by solid state synthesis at 1300-1400 degrees C. The phase composition, perovskite structural parameters and dielectric properties have been obtained by X-ray diffraction and dielectric measurements as a function of chemical composition and temperature. At low doping levels the formation of BaTiO3-based solid solution has been found. The precipitation of BaCrO3 has been detected at x = y = 2.0 molt A model of the incorporation of Cr3+ and Bi3+ ions into BaTiO3-based crystal lattice has been proposed. Diffused phase transition in the temperature range 100-140 degrees C have been revealed by dielectric measurements for different ceramic composition. As high dielectric constant as 7311 and as low dielectric loss as 0.02 have been found for the composition of 0.98BaTiO(3)-0.01Cr(2)Ti(3)O(9)-0.01Bi(2)O(3). (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：1568 / 1571

页数：4

共 15 条

[1] Atomistic simulation of dopant incorporation in barium titanate [J].

Buscaglia, Maria Teresa ;

Buscaglia, Vincenzo ;

Viviani, Massimo ;

Nanni, Paolo .

2001, American Ceramic Soc, Westerville (84)

[2] The dielectric properties of BaTiO3 based ceramics co-doped with Bi/Mn [J].

Ding Shihua ;

Song Tianxiu ;

Yang Xiaojing ;

Liu Xiaobing ;

Liu Guobiao .

CERAMICS INTERNATIONAL, 2012, 38 :S33-S36

[3] Schreyerite, V2Ti3O9:: New occurrence and crystal structure [J].

Döbelin, N ;

Reznitsky, LZ ;

Sklyarov, EV ;

Armbruster, T ;

Medenbach, O .

AMERICAN MINERALOGIST, 2006, 91 (01) :196-202

[4]

El-Menshawy K, 2006, J MATER SCI TECHNOL, V22, P245

[5] Destabilization of ferroelectric order in bismuth perovskite ceramics by A-site vacancies [J].

Han, Hyoung-Su ;

Ahn, Chang-Won ;

Kim, Ill Won ;

Hussain, Ali ;

Lee, Jae-Shin .

MATERIALS LETTERS, 2012, 70 :98-100

[6] A structural model of Cr/(Ba,Pb)TiO3 positive temperature coefficient composite [J].

He, ZM ;

Ma, J ;

Qu, YF ;

Wang, CG .

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2000, 11 (03) :235-238

[7] Rising Tc in Bi and Cu co-doped BaTiO3 [J].

Kumada, Nobuhiro ;

Ogiso, Hideyuki ;

Shiroki, Keiko ;

Wada, Satoshi ;

Yonesaki, Yoshinori ;

Takei, Takahiro ;

Kinomura, Nobukazu .

MATERIALS LETTERS, 2010, 64 (03) :383-385

[8] Structural and optical properties of chromium-doped hexagonal barium titanate ceramics [J].

Langhammer, H. T. ;

Mueller, T. ;

Boettcher, R. ;

Abicht, H-P .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2008, 20 (08)

[9] Crystal structure and related properties of copper-doped barium titanate ceramics [J].

Langhammer, HT ;

Müller, T ;

Böttcher, R ;

Abicht, HP .

SOLID STATE SCIENCES, 2003, 5 (07) :965-971

[10] Magnetic properties of transition-metal-codoped BaTiO3 systems [J].

Lin, Fangting ;

Shi, Wangzhou .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 475 (1-2) :64-69

← 1 2 →