Thermal stability of CoCr films for perpendicular recording media

Author

Bottoni, G. ; Candolfo, D. ; Cecchetti, A.

Author_Institution

Dipartimento di Fisica, Ferrara Univ., Italy

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

2468

Lastpage

2470

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908468

Filename

908468