Dielectric behavior of Li and Ti co-doped NiO/PVDF composites

被引：84

作者：

Dang, ZM ^{[1
]}

Wu, JB ^{[1
]}

Fan, LZ ^{[1
]}

Nan, CW ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 376卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(03)01004-2

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：

The dielectric behavior of two kinds of Li and Ti co-doped NiO (LTNO)/polyvinylidene fluoride (PVDF) composite was studied at various different frequencies and temperatures. The effective dielectric constant of the percolative composite at 100 Hz is very high, i.e., epsilon(eff) approximate to 600, which is 60 times higher than that of the PVDF. The results also show that there is a remarkable difference in the dielectric constant of the composites with different LTNO fillers. Boundary layer capacitor effect and percolation theory can be used to explain the experimental results. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：389 / 394

页数：6

共 21 条

[1] 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

[2] THEORETICAL EQUATIONS FOR DIELECTRIC, PIEZOELECTRIC AND ELASTIC PROPERTIES OF FLEXIBLE COMPOSITE CONSISTING OF POLYMER AND CERAMIC POWDER OF 2 DIFFERENT MATERIALS [J].

BANNO, H .

FERROELECTRICS, 1989, 95 :111-115

[3] EXACTLY SOLVABLE MICROSCOPIC GEOMETRIES AND RIGOROUS BOUNDS FOR THE COMPLEX DIELECTRIC-CONSTANT OF A 2-COMPONENT COMPOSITE-MATERIAL [J].

BERGMAN, DJ .

PHYSICAL REVIEW LETTERS, 1980, 44 (19) :1285-1287

[4]

Chan HLW, 1999, FERROELECTRICS, V224, P541, DOI 10.1080/00150199908210557

[5] Measurements of universal and non-universal percolation exponents in macroscopically similar systems [J].

Chiteme, C ;

McLachlan, DS .

PHYSICA B-CONDENSED MATTER, 2000, 279 (1-3) :69-71

[6] Study on dielectric behavior of a three-phase CF/(PVDF+BaTiO3) composite [J].

Dang, ZM ;

Fan, LZ ;

Shen, Y ;

Nan, CW .

CHEMICAL PHYSICS LETTERS, 2003, 369 (1-2) :95-100

[7] Dielectric behavior of three-phase percolative Ni-BaTiO3/polyvinylidene fluoride composites [J].

Dang, ZM ;

Shen, Y ;

Nan, CW .

APPLIED PHYSICS LETTERS, 2002, 81 (25) :4814-4816

[8] PYROELECTRICITY IN POLYMERS [J].

DASGUPTA, DK .

FERROELECTRICS, 1991, 118 (1-4) :165-189

[9] 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

[10] Dielectric behaviours of multi-doped BaTiO3/epoxy composites [J].

Kuo, DH ;

Chang, CC ;

Su, TY ;

Wang, WK ;

Lin, BY .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2001, 21 (09) :1171-1177

← 1 2 3 →