Magnetic properties and magneto-optical effect of Co0.5Fe2.5O4 nanostructured films

被引：36

作者：

Gu, BX ^{[1
]}

机构：

[1] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 21期

关键词：

D O I：

10.1063/1.1573357

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Co0.5Fe2.5O4 ferrite films with nanostructure have been prepared by rf sputtering on a quartz substrate and annealed at temperatures from 400 to 600 degreesC in air. The magnetic properties and magneto-optical effect have been studied. It has been found that nanocrystalline Co0.5Fe2.5O4 films exhibit good magnetic properties and a large magneto-optical effect. The magnetization, coercivity, remanence ratio, and maximum energy product are 455 emu/cm(3), 2.8 kOe, 0.72 MGOe, and 2.4 MGOe, respectively. The magneto-optical Faraday rotation is <-3.4°/μm at short wavelength and 4°/μm at the wavelength of 740 nm. These characteristics make them very promising to be used for magneto-optical recording and for permanent magnets. The influence of the distribution of Co2+ ions on magnetic properties and magneto-optical effect has been discussed. (C) 2003 American Institute of Physics.

引用

页码：3707 / 3709

页数：3

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