Title :
Thermal stability of CoCr films for perpendicular recording media
Author :
Bottoni, G. ; Candolfo, D. ; Cecchetti, A.
Author_Institution :
Dipartimento di Fisica, Ferrara Univ., Italy
fDate :
9/1/2000 12:00:00 AM
Abstract :
The thermal stability of the magnetic properties of CoCr thin films for perpendicular recording media is analyzed with measurement of the dependence of the coercivity on the applied field sweep rate, in films with different thickness, Cr content, and presence or absence of a soft FeNi underlayer. The results are discussed on the basis of the evolution of the magnetization reversal mode, owing to the different microscopic structures and magnetic order of the films, which indicates weaker thermal stability of the magnetic properties in films with the smallest thickness, lowest Cr content, and the presence of the FeNi underlayer
Keywords :
chromium alloys; cobalt alloys; coercive force; ferromagnetic materials; magnetic multilayers; magnetic thin films; magnetisation reversal; perpendicular magnetic recording; thermal stability; CoCr-FeNi; applied field sweep rate; coercivity; film thickness; magnetic order; magnetization reversal mode; microscopic structures; perpendicular recording media; soft underlayer; thermal stability; Chromium; Coercive force; Magnetic analysis; Magnetic field measurement; Magnetic films; Magnetic properties; Perpendicular magnetic recording; Stability analysis; Thermal stability; Thickness measurement;
Journal_Title :
Magnetics, IEEE Transactions on
