Giant Magnetodielectric Effect in 0-3 Ni0.5Zn0.5Fe2O4-Poly(vinylidene-fluoride) Nanocomposite Films

被引：79

作者：

Guo, Yiping ^{[1
,2
]}

Liu, Yun ^{[1
]}

Wang, Jianli ^{[3
]}

Withers, Ray L. ^{[1
]}

Chen, Hua ^{[4
]}

Jin, Lu ^{[1
]}

Smith, Paul ^{[1
]}

机构：

[1] Australian Natl Univ, Res Sch Chem, Canberra, ACT 0200, Australia

[2] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

[3] Univ New S Wales, Australian Def Force Acad, Sch Phys Environm & Math Sci, Canberra, ACT 2600, Australia

[4] Australian Natl Univ, Ctr Adv Microscopy, Canberra, ACT 0200, Australia

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 32期

基金：

澳大利亚研究理事会;

关键词：

MAGNETOELECTRIC PROPERTIES; COMPOSITES;

D O I：

10.1021/jp103777r

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：

Multiferroic nanocomposite films, composed of well-dispersed, magnetic Ni0.5Zn0.5Fe2O4 (NZFO) nanoparticles (in the size range 10-20 urn) embedded into a poly(vinylidene-fluoride) copolymer matrix host, have been prepared by a modified polymer processing route. The dielectric, ferroelectric, ferromagnetic and magnetodielectric properties of these nanocomposite films have been systematically investigated. The nanocomposite films exhibit low dielectric loss and good ferroelectric character. The magnetodielectric coefficient of the resultant nanocomposite films increases as a function of the NZFO fraction and is almost frequency independent. A giant magnetodielectric coefficient up to 5.1% was obtained at room temperature and under a low magnetic field of 0.3 T. The giant magnetodielectric effect together with low dielectric loss suggests the nanocomposite NZFO films are promising for use in smart multiferroic devices.

引用

页码：13861 / 13866

页数：6

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