Title :
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
fDate :
7/1/2001 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
