Microstructure and magnetic properties of cobalt ferrite thin films

Author

Hu, G. ; Harris, V.G. ; Suzuki, Y.

Author_Institution

Dept. of Mater. Sci. & Eng., Cornell Univ., Ithaca, NY, USA

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

2347

Lastpage

2349

Abstract

In contrast to films grown on spinel structure substrates, epitaxial cobalt ferrite films grown on MgO substrates provide a model system to study the effects of microstructural defects on the magnetic properties. The anomalous magnetic behaviors observed in as-grown films are explained by the structural and magnetic disorder across the antiphase boundaries. During post deposition annealing, magnesium interdiffusion between the cobalt ferrite film and underlying substrate was observed and resulted in phase segregation

Keywords

annealing; antiphase boundaries; chemical interdiffusion; cobalt compounds; crystal microstructure; ferrites; magnesium compounds; magnetic epitaxial layers; magnetic thin films; segregation; CoFe₂O₄-MgO; MgO; MgO substrates; antiphase boundaries; as-grown films; cobalt ferrite thin films; epitaxial cobalt ferrite films; magnesium interdiffusion; magnetic disorder; magnetic properties; microstructural defects; microstructure; phase segregation; post deposition annealing; spinel structure substrates; Annealing; Cobalt; Ferrite films; Magnetic films; Magnetic materials; Magnetic properties; Microstructure; Optical films; Pulsed laser deposition; Substrates;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.951168

Filename

951168