Structural and dielectric properties of Ba5LnSn3Nb7O30 (Ln=La, Nd) ceramics

被引：38

作者：

Fang, L ^{[1
]}

Chen, L ^{[1
]}

Zhang, H ^{[1
]}

Diao, CL ^{[1
]}

Yuan, RZ ^{[1
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

来源：

MATERIALS LETTERS | 2004年 / 58卷 / 21期

基金：

中国国家自然科学基金;

关键词：

X-ray diffraction; dielectrics; Tungsten bronze; niobates; microstructure;

D O I：

10.1016/j.matlet.2004.03.042

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two novel Ba(5)LnSn(3)Nb(7)O(30) (Ln = La, Nd) ceramics were prepared and characterized. Both compounds are paraelectric phases adopting the filled tetragonal tungsten bronze (TB) structure at room temperature. Ba5LaSn3Nb7O30 and Ba5NdSn3Nb7O30 ceramics show high dielectric constant of 171 and 182 together with low dielectric loss 1.2 x 10(-3) and 1.8 x 10(-3) at 1 MHz, respectively. In comparison with dielectric ceramics with TB structure in BaO-Ln(2)O(3)-TiO2-Ta2O5 (Ln = La, Nd) system, the temperature coefficients of the dielectric constant (tau(epsilon)) are significantly reduced. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：2654 / 2657

页数：4

共 12 条

[1] High permittivity and low loss dielectric ceramics in the BaO-La2O3-TiO2-Ta2O5 system [J].

Chen, XM ;

Sun, YH ;

Zheng, XH .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2003, 23 (10) :1571-1575

[2] Dielectric characteristics of ceramics in BaO-Nd2O3-TiO2-Ta2O5 system [J].

Chen, XM ;

Yang, JS .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1999, 19 (01) :139-142

[3] Preparation, characterization and dielectric properties of Sr5LnTi3Ta7O30 (Ln = La, Nd) ceramics [J].

Fang, L ;

Zhang, H ;

Yang, JF ;

Hong, XK ;

Meng, FC .

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2004, 15 (06) :355-357

[4] Structural and dielectric properties of Sr5RTi3Ta7O30 (R = Sm, Y) ceramics [J].

Fang, L ;

Zhang, H ;

Yang, JF ;

Meng, FH ;

Yuan, RZ .

MATERIALS LETTERS, 2004, 58 (11) :1777-1780

[5] TEMPERATURE-STABLE DIELECTRIC MATERIALS IN THE SYSTEM BATIO3-NB2O5-CO3O4 [J].

HENNINGS, DFK ;

SCHREINEMACHER, BS .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1994, 14 (05) :463-471

[6]

HERBERT TM, 1985, CERAMIC DIELECTRICS, P188

[7] Preparation, characterization and dielectric properties of Ba3Ln3Ti5Nb5O30 (Ln = La, Nd) ceramics [J].

Koshy, P ;

Kumari, LP ;

Sebastian, MT .

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 1998, 9 (01) :43-45

[8] PHASE-STRUCTURE AND DIELECTRIC-PROPERTIES OF BI2O3-ZNO-NB2O5-BASED DIELECTRIC CERAMICS [J].

LIU, DH ;

LIU, Y ;

HUANG, SQ ;

YAO, X .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1993, 76 (08) :2129-2132

[9] Dielectric and ferroelectric properties of Ba3M3Ti5Nb5O30 (M = Sm or Y) ceramics [J].

Rao, PP ;

Ghosh, SK ;

Koshy, P .

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2001, 12 (12) :729-732

[10] New low loss microwave dielectric ceramics in the BaO-TiO2-Nb2O5/Ta2O5 system [J].

Sebastian, MT .

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 1999, 10 (07) :475-478

← 1 2 →