Origin of Enhanced Coercivity in (fe65co35)x(al2o3)1-X Granular Thin-Films
Journal
Journal of Magnetism and Magnetic Materials
Journal Volume
120
Journal Issue
1月3日
Pages
342-344
Date Issued
1993
Author(s)
Hsu, Jh
Abstract
The magnetic behaviors of granular (Fe65Co35)x(Al2O3)1-x films have been examined. The results show that the coercivity at 5 K first increases sharply from 80 Oe for x = 0.1 to 700 Oe for x = 0.3 and then drops with increasing x. This behavior differs from the system of Fe-SiO2. Considering the interfacial area, we can theoretically explain the difference between these systems. It is concluded that the peak value of coercivity becomes smaller and occurs at a lower value of x for a more rapidly increasing granular size with volume fraction. © 1993.
Type
journal article