Spin-stand characterization of thermal stability in high density disk media

Author

Shi, Rick C. ; Zhu, Jian-Gang ; Lal, Brij B. ; Malhotra, Sudhir S. ; Schultz, Marilee ; Russak, Michael A.

Author_Institution

Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

2462

Lastpage

2464

Abstract

An experimental technique has been developed to characterize the thermal stability of recording media. We measured the remanent magnetization decay in a significant range under various reverse fields in a short time scale. By directly fitting the experimental data with an Arrhenius-Neel type model, the effective energy barrier distribution has been estimated. Unlike other previously reported techniques, this new technique enables more accurate analysis of energy barrier distribution and reliable evaluation of long-term stability for media with a wide range of thermal stability

Keywords

grain size; magnetic disc storage; magnetic thin films; remanence; thermal stability; Arrhenius-Neel model; energy barrier distribution; grain size; high density magnetic recording; remanent magnetization decay; spin stand measurement; thermal stability; thin film disk medium; Coercive force; Energy barrier; Magnetic field measurement; Magnetic heads; Magnetic recording; Magnetization; Stability analysis; Testing; Thermal stability; Time measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908466

Filename

908466