Pd/Co multilayers for perpendicular magnetic recording

Author

Lairson, Bruce M. ; Perez, Jessie ; Baldwin, Chandler

Author_Institution

Dept. of Mater. Sci., Rice Univ., Houston, TX, USA

Volume

30

Issue

6

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

4014

Lastpage

4016

Abstract

We have demonstrated that Pd/Co metal multilayers have superior perpendicular magnetic recording properties when compared with conventional CoCr perpendicular alloy media. Using a perpendicular contact probe transducer, the multilayers exhibit more than two times the readback signal of CoCr media. For instance, at 145000 flux changes per inch, multilayer media exhibited a track amplitude of 380 μV, compared with 140 μV for conventional media using the same transducer. The multilayers can be made with low roughness suitable for contact recording, and can generate narrow 12 microinch readback pulses with large amplitude. In addition, the multilayers have essentially no dead layer. Many aspects of Pd/Co performance can be predictably optimized for a given set of transducer properties

Keywords

cobalt; ferromagnetic materials; magnetic disc storage; magnetic multilayers; magnetic recording noise; palladium; perpendicular magnetic recording; sputtered coatings; transducers; 380 muV; Pd-Co; Pd/Co metal multilayers; contact recording; magnetic disk storage; magnetron sputtering; media noise; perpendicular contact probe transducer; perpendicular magnetic recording; readback signal; roughness; track amplitude; transducer properties; Anisotropic magnetoresistance; Magnetic flux; Magnetic materials; Magnetic multilayers; Magnetic properties; Magnetic recording; Magnetooptic recording; Perpendicular magnetic recording; Sputtering; Transducers;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.333974

Filename

333974