(111)-Oriented Co0.8Fe2.2O4+δ thin film grown by pulsed laser deposition: structural and magnetic properties

被引：0

作者：

M. Khodaei

S. A. Seyyed Ebrahimi

Yong Jun Park

Sun Hee Choi

CheolGi Kim

Junwoo Son

Sunggi Baik

机构：

[1] University of Tehran,Center of Excellence for Magnetic Materials, School of Metallurgy and Materials, Faculty of Engineering

[2] Pohang University of Science and Technology (POSTECH),Department of Materials Science and Engineering

[3] Pohang University of Science and Technology (POSTECH),Department of Materials Science and Engineering

[4] Pohang University of Science and Technology (POSTECH),Pohang Accelerator Laboratory

[5] Chungnam National University,Center for NanoBioEngineering and Spintronics, Department of Materials Science and Engineering

来源：

Journal of Materials Science | 2013年 / 48卷

关键词：

Ferrite; Magnetic Anisotropy; CoFe2O4; Magnetocrystalline Anisotropy; Cobalt Ferrite;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The perfect (111)-oriented Co0.8Fe2.2O4+δ thin films were grown on Pt(111)/Si substrate by pulsed laser deposition technique. Co0.8Fe2.2O4+δ film grown at oxygen pressure of 10 mTorr (optimum condition) has the highest (111)-orientation degree, the lowest surface roughness, uniformly compacted nanosize grain-feature structure (50–80 nm), and the highest magnetization. The Fe K-edge X-ray absorption near edge structure analyses revealed that, in Fe-doped CoFe2O4 film, the Fe also exists as Fe3+ (Co0.8Fe2.2O4+δ), which affects the lattice parameter as well as magnetic properties. The magnetic properties (saturation magnetization, coercivity, and squareness) of Co0.8Fe2.2O4+δ thin film are significantly higher than those of CoFe2O4 film. Moreover, the (111)-oriented Co0.8Fe2.2O4+δ thin film demonstrates strong in-plane magnetic anisotropy, which results from orientation, as well as the stress-induced magnetic anisotropy.

引用

页码：6960 / 6969

页数：9

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