Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
57 (1985), S. 4034-4036
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Microstructure and temperature dependence of magnetic properties of Co-CoO films are studied. Columnar microstructure with chains of Co fine particles surrounded by CoO fine particles develops perpendicular to the film plane. Perpendicular anisotropy energy Ku takes a maximum value when the columnar diameter is minimum whose typical value is 1/20 of the film thickness. Change of magnetic domain structure with increasing Ku is studied. The perpendicular magnetization is restricted to the heterogeneous columnar microstructure. The perpendicular coercivity Hc decreases steeply with increasing temperature, that is associated probably with antiferromagnetic nature of CoO. Hc at room temperature increases after an annealing at 400–500 K.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.334662
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