Magnetic nanocomposite thin films of BaFe12O19 and TiO2 prepared by sol-gel method

被引：29

作者：

Qiu, JX ^{[1
]}

Gu, MY ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab MMCs, Shanghai 200030, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2005年 / 252卷 / 04期

关键词：

nanocomposite films; barium ferrite; sol-gel; microcrack; magnetic properties;

D O I：

10.1016/j.apsusc.2005.02.031

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 composite films with different weight ratio of barium ferrite to titanium dioxide are successfully prepared using sol-gel method for the first time. The morphology, crystal structure and magnetic properties of composite films are investigated with atomic force microscopy, X-ray diffraction and vibrating sample magnetometry. The results show that the composite films are uniform with no microcracks. The grain diameters are less than 100 nm. With the increase of barium ferrite, the grain diameter decreases. The composite films are composed of M-type hexagonal barium ferrite and rutile titanium dioxide. The composite films possess the excellent magnetic properties. The specific saturation magnetization and coercivity reach 18.3 emu/g and 3350 Oe, respectively. The application of composite films in magnetic recording and electromagnetic absorption fields is promising. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：888 / 892

页数：5

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