Lattice matching effect of Co-(Cr,Ru) alloy underlayer on magnetic properties of Co-Cr-Pt longitudinal recording media

Author

Inaba, Nobuyuki ; Futamoto, Masaaki

Author_Institution

Tsukuba Res. Lab., Hitachi Maxell Ltd., Ibaraki, Japan

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

2303

Lastpage

2305

Abstract

Magnetic properties are investigated for Co-Cr-Pt thin films deposited on nonmagnetic h.c.p.-Co(Cr,Ru) underlayers with different h.c.p. lattice constants. Higher coercivity, higher coercive squareness, and lower fluctuation field are observed when the h.c.p. lattice constant is close to that of the Co-Cr-Pt recording layer. Temperature dependence of magnetic properties indicates that employment of nonmagnetic Co-Cr-Ru layer is effective to increase the coercivity and to enhance the thermal stability of recording layer

Keywords

chromium alloys; cobalt alloys; coercive force; lattice constants; magnetic recording; magnetic thin films; platinum alloys; ruthenium alloys; thermal stability; Co(CrRu); Co-(Cr,Ru); Co-Cr-Pt; Co-Cr-Pt longitudinal recording media; higher coercive squareness; higher coercivity; lattice constant; lattice matching effect; lower fluctuation field; magnetic properties; recording layer; thermal stability; underlayer; Coercive force; Employment; Fluctuations; Lattices; Magnetic films; Magnetic properties; Magnetic recording; Sputtering; Temperature dependence; Thermal stability;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908409

Filename

908409