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Title: Magnetic anisotropy and high coercivity of epitaxial Co-ferrite films prepared by pulsed laser deposition
Authors: Yin, J.H.
Ding, J. 
Liu, B.H. 
Yi, J.B. 
Miao, X.S.
Chen, J.S.
Issue Date: 2007
Citation: Yin, J.H., Ding, J., Liu, B.H., Yi, J.B., Miao, X.S., Chen, J.S. (2007). Magnetic anisotropy and high coercivity of epitaxial Co-ferrite films prepared by pulsed laser deposition. Journal of Applied Physics 101 (9) : -. ScholarBank@NUS Repository.
Abstract: Co Fe2 O4 films with different thicknesses (40-200 nm) were prepared on sapphire using pulsed laser deposition at different substrate temperatures. The films on (0001) sapphire showed a (111) epitaxial structure even at a low deposition temperature of 150 °C. The coercivity up to 8.8 kOe could be achieved in the 40 nm film on sapphire deposited at 550 °C. By comparison, the 33 nm film on quartz possesses a nanocrystalline structure with the grain size below 20 nm as well as a strong (111) preferential texture. The highest coercivity (12.5 kOe) up to now was obtained in the 33 nm Co-ferrite films. The study also revealed that high coercivity and large perpendicular anisotropy of these Co-ferrite thin films may be related to the textured structure and large residual strain. © 2007 American Institute of Physics.
Source Title: Journal of Applied Physics
ISSN: 00218979
DOI: 10.1063/1.2709763
Appears in Collections:Staff Publications

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