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- Title
(111)-Oriented CoFeO thin film grown by pulsed laser deposition: structural and magnetic properties.
- Authors
Khodaei, M.; Seyyed Ebrahimi, S.; Park, Yong; Choi, Sun; Kim, CheolGi; Son, Junwoo; Baik, Sunggi
- Abstract
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 Co0.8Fe2.2O4+δfilm. 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.
- Subjects
THIN film manufacturing; COBALT compounds synthesis; PULSED laser deposition; MATERIALS science; STRUCTURAL analysis (Science); MAGNETIC properties of thin films; DOPING agents (Chemistry); FERRITES
- Publication
Journal of Materials Science, 2013, Vol 48, Issue 20, p6960
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-013-7504-5