Magnetic properties and microstructure of evaporated Co oxide tape media

The magnetic properties and microstructure of Co oxide tape media were studied. The intrinsic in-plane and out-of-plane anisotropy constants of metal evaporated CoO tape media were measured from the in-plane torque and the out-of-plane torque curves. It was found that after considering the tilting e...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 1996-03, Vol.155 (1), p.309-311
Main Authors: Pan, Tao, Spratt, Geoffrey W.D., Tang, Li, Laughlin, David E.
Format: Article
Language:English
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Summary:The magnetic properties and microstructure of Co oxide tape media were studied. The intrinsic in-plane and out-of-plane anisotropy constants of metal evaporated CoO tape media were measured from the in-plane torque and the out-of-plane torque curves. It was found that after considering the tilting effect of the column, the total intrinsic anisotropy constant, calculated from the in-plane torque curve, is much less than that calculated from the out-of-plane anisotropy constant. TEM electron diffraction studies indicate that the Co c-axes are randomly oriented. However, from the in-plane hysteresis loop measurements, the easy axes are pretty well parallel to incident beam plane. The cross sectional TEM micrograph shows that the column is tilted 30° out-of-plane and has a diameter of 10 nm.
ISSN:0304-8853
DOI:10.1016/0304-8853(95)00749-0