Title :
Effects of morphology on the magnetic properties and transition noise of longitudinal CoCrTa/Cr thin film media
Author :
Lu, Miaogen ; Min, Tai ; Chen, Qixu ; Judy, Jack H.
Author_Institution :
Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA
fDate :
9/1/1992 12:00:00 AM
Abstract :
The effects of grain morphology on the magnetic properties and transition noise, and their correlation with magnetic interactions of longitudinal CoCrTa/Cr thin-film media have been studied. An increase of the Cr deposition temperature increases the Cr grain size, resulting in a slight increase in the in-plane coercivity, but neither a reduction in magnetic coupling nor an improvement in signal-to-noise ratio was observed. However, an increase of the CoCrTa deposition temperature was found to increase the in-plane coercivity and reduce the transition noise significantly
Keywords :
chromium; chromium alloys; cobalt alloys; coercive force; crystal microstructure; ferromagnetic properties of substances; grain size; magnetic recording; magnetic thin films; magnetic transitions; metallic thin films; noise; sputter deposition; sputtered coatings; tantalum alloys; CoCrTa alloys; CoCrTa deposition temperature; CoCrTa-Cr; Cr; Cr deposition temperature; Cr grain size; grain morphology; in-plane coercivity; longitudinal thin film media; magnetic coupling; magnetic interactions; magnetic properties; signal-to-noise ratio; transition noise; Chromium; Coercive force; Couplings; Grain size; Magnetic films; Magnetic noise; Magnetic properties; Morphology; Signal to noise ratio; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
