Enhanced initial permeability and dielectric constant in a double-percolating Ni0.3Zn0.7Fe1.95O4-Ni-Polymer composite

被引：62

作者：

Shen, Y ^{[1
]}

Yue, ZX ^{[1
]}

Li, M ^{[1
]}

Nan, CW ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 10084, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2005年 / 15卷 / 07期

关键词：

D O I：

10.1002/adfm.200500045

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel, three-phase, double-percolating composite with NiZn-ferrite particles and nickel particles embedded in a poly(vinylidene fluoride) matrix is prepared by a simple hot-pressing method. Large ferrite particles in the composite not only act as a magnetic phase, thus endowing the composite with a high initial permeability, but also present (in a high volume fraction) a discrete (non-percolating) phase, confining polymer and metallic particles into a continuous double-percolating structure of low volume fraction. In particular, a large enhancement in both the initial permeability and the dielectric constant of the three-phase composites is observed, which is due mainly to the addition of a small number of nickel particles that act as both magnetic and percolative metallic phases. The dielectric and magnetic behavior observed in the three-phase composites can be explained by effective-medium and percolation theories.

引用

页码：1100 / 1103

页数：4

共 18 条

[11]

PATANKAR KK, 2003, MATER CHEM PHYS, V72, P23

[12] Complex permeability of soft magnetic ferrite polyester resin composites at frequencies above 1 MHz [J].

Paterson, JH ;

Devine, R ;

Phelps, ADR .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 196 :394-396

[13] A ferroelectric ferromagnetic composite material with significant permeability and permittivity [J].

Qi, XW ;

Zhou, J ;

Yue, ZX ;

Gui, ZL ;

Li, LT ;

Buddhudu, S .

ADVANCED FUNCTIONAL MATERIALS, 2004, 14 (09) :920-926

[14]

RADO GT, 1953, REV MOD PHYS, V81, P25

[15] Magnetic property variations in nickel caused by non-magnetic inclusions [J].

Ramesh, A ;

Govindaraju, MR ;

Jiles, DC ;

Biner, SB .

IEEE TRANSACTIONS ON MAGNETICS, 1996, 32 (05) :4836-4838

[16] Anisotropic electrical properties of semiconductive Bi2S3 nanorod filled ferroelectric polyvinylidene fluoride [J].

Shen, Y ;

Nan, CW ;

Li, M .

CHEMICAL PHYSICS LETTERS, 2004, 396 (4-6) :420-423

[17]

SLAMA J, 2003, J MAGN MAGN MATER, V195, P254

[18] EVALUATION OF FERROELECTRIC FERROMAGNETIC COMPOSITE BY MICROCOMPOSITE DESIGNING [J].

YAMAMOTO, T ;

CHINO, M ;

TANAKA, R ;

UEYAMA, T ;

OKAZAKI, K .

FERROELECTRICS, 1989, 95 :175-178

← 1 2 →