Title :
Magnetization behavior in exchange-coupled Co/TbFeCo films
Author :
Matsubara, N. ; Sai, F. ; Wakabayashi, H. ; Notarys, H. ; Suzuki, T.
Author_Institution :
IBM Tokyo Res. Lab., Japan
fDate :
9/1/1990 12:00:00 AM
Abstract :
The magnetization behavior in exchange-coupled Co/TbFeCo films with various Co thicknesses, as investigated by a vectorial vibrating sample magnetometer, is discussed. For the TbFeCo layer with 95-Å thickness, the critical thickness of a Co layer below which the Co moment is coupled with the TbFeCo moment to align along the film normal is found to be about 23-Å. This result is consistent with that previously found. It was found that an easy axis tilt from the film normal of even a few degrees plays an important role in the magnetization reversal where the Co and TbFeCo moments are decoupled for thick Co layer cases
Keywords :
cobalt alloys; iron alloys; magnetic moments; magnetic thin films; magnetisation reversal; magneto-optical recording; magnetometers; terbium alloys; Co moment; Co thicknesses; TbFeCo films; critical thickness; easy axis tilt; magnetization reversal; magneto-optical recording; vectorial vibrating sample magnetometer; Coercive force; Couplings; Magnetic films; Magnetization; Magnetometers; Magnetooptic effects; Magnetooptic recording; Optical films; Perpendicular magnetic anisotropy; Perpendicular magnetic recording;
Journal_Title :
Magnetics, IEEE Transactions on
