Crystal structure and dielectric properties of ferroelectric ceramics in the BaO-Sm2O3-TiO2-Nb2O5 system

被引：80

作者：

Zheng, XH ^{[1
]}

Chen, XM ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2003年 / 125卷 / 7-8期

关键词：

dielectric properties; Tungsten-bronze structure; x-ray diffraction; DSC; phase transition;

D O I：

10.1016/S0038-1098(02)00709-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Some tungsten-bronze ferroelectrics were synthesized and characterized in the BaO-Sm2O3-TiO2-Nb2O5 system. Ba4Sm2Ti4Nb6O30 and Ba5SmTi3Nb7O30 had the tetragonal filled tungsten-bronze structure; while Ba3Sm3Ti5Nb5O30 consisted of the orthorhombic tungsten-bronze major phase and the BaTi4O9 secondary phase. The present dielectric ceramics exhibited relaxor behavior with the maximum temperatures around 185, 285 and 130degreesC for Ba3Sm3Ti5Nb5O30, Ba4Sm2Ti4Nb6O30 and Ba5SmTi3Nb7O30, respectively. Moreover, Ba3Sm3Ti5Nb5O30 exhibited a second possible phase transition around 93 degreesC. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：449 / +

页数：7

共 18 条

[1] Finite size effects in ferroelectric and antiferroelectric materials [J].

Chattopadhyay, S .

NANOSTRUCTURED MATERIALS, 1997, 9 (1-8) :551-554

[2] Studies on the growth and properties of magnesium-doped potassium lithium niobate single crystal [J].

Cheng, ZX ;

Zhang, SJ ;

Zhou, GY ;

Liu, JH ;

Han, JR ;

Chen, HC .

MATERIALS RESEARCH BULLETIN, 2000, 35 (07) :1107-1112

[3] Syntheses and electrical properties of tetragonal tungsten bronze type solid solution Ba6-xLaxNb10O30+delta (x = 0, 1, 2, 3) and Sr6Nb10O30 [J].

Hwang, YK ;

Kwon, YU .

MATERIALS RESEARCH BULLETIN, 1997, 32 (11) :1495-1502

[4] SOME COMPOUNDS OF TUNGSTEN-BRONZE TYPE A6B10O30 (B=NB, TI OR NB, W) [J].

IKEDA, T ;

HARAGUCHI, T ;

ONODERA, Y ;

SAITO, T .

JAPANESE JOURNAL OF APPLIED PHYSICS, 1971, 10 (08) :987-+

[5]

NEURGAONKAR RI, 1998, FERROELECTRIC, V87, P167

[6] FERROELECTRIC PROPERTIES OF THE TUNGSTEN BRONZE M6(2+) M2(4+) NB8O30 SOLID-SOLUTION SYSTEMS [J].

NEURGAONKAR, RR ;

NELSON, JG ;

OLIVER, JR .

MATERIALS RESEARCH BULLETIN, 1992, 27 (06) :677-684

[7] FERROELECTRIC AND STRUCTURAL-PROPERTIES OF THE TUNGSTEN BRONZE SYSTEM K2LN3+NB5O15, LN = LA TO LU [J].

NEURGAONKAR, RR ;

NELSON, JG ;

OLIVER, JR ;

CROSS, LE .

MATERIALS RESEARCH BULLETIN, 1990, 25 (08) :959-970

[8] Structural and dielectric properties of Ba4R2Ti4Nb6O30 (R = Y, Sm and Dy) ferroelectric ceramics [J].

Palai, R ;

Choudhary, RNP ;

Tewari, HS .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2001, 62 (04) :695-700

[9] DIFFUSENESS AS A USEFUL PARAMETER FOR RELAXOR CERAMICS [J].

PILGRIM, SM ;

SUTHERLAND, AE ;

WINZER, SR .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1990, 73 (10) :3122-3125

[10] 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

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