Magnetic switching volumes of CoSm thin films for high density longitudinal recording

Author

Singleton, E.W. ; Shan, Z.S. ; Jeong, Y.S. ; Sellmyer, D.J.

Author_Institution

Behlen Lab. of Phys., Nebraska Univ., Lincoln, NE, USA

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

2743

Lastpage

2745

Abstract

For a high density recording media, the magnetic switching volume is of great importance when considering media noise and thermal stability. CoSm/Cr films have been prepared and the influence of the Cr underlayer thickness and of the magnetic layer preparation conditions on the magnetic switching volume have been investigated through magnetic viscosity and remnance curve measurements. The measured switching volumes ranged from 3.0 to 15.2×10¹⁸ cm³, and implications regarding noise and thermal stability are discussed

Keywords

cobalt alloys; coercive force; ferromagnetic materials; magnetic recording noise; magnetic switching; magnetic thin films; remanence; samarium alloys; thermal stability; CoSm-Cr; high density longitudinal recording; magnetic layer preparation conditions; magnetic switching volumes; magnetic viscosity; media noise; remnance curve measurements; thermal stability; Chromium; Magnetic films; Magnetic noise; Magnetic recording; Magnetic switching; Noise measurement; Thermal stability; Thickness measurement; Viscosity; Volume measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.490137

Filename

490137