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Reducing Intergranular Magnetic Coupling by Incorporating Carbon into Co/Pd Multilayers

Published online by Cambridge University Press:  15 February 2011

Wenhong Liu ,
Jonathan Morris ,
Alex Payne  and
Bruce Lairson
Wenhong Liu
Affiliation:
Materials Science and Engineering, Rice University, Houston, TX 77251
Jonathan Morris
Affiliation:
Materials Science and Engineering, Rice University, Houston, TX 77251
Alex Payne
Affiliation:
Censtor Corporation, San Jose, CA 95126
Bruce Lairson
Affiliation:
Materials Science and Engineering, Rice University, Houston, TX 77251
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Abstract

The ideal magnetic switching mechanism for many types of data storage, including hard disk recording, is isolated domain coherent rotation (Stoner-Wohlfarth switching). However, in typical Pd/Co multilayers with high coercivity, the dominant switching mechanism is domain wall motion, which causes noise in the read back signal. We show that the proper addition of elements, such as carbon, into Pd/Co multilayers reduces the coupling between adjacent magnetic domains. The reduction of magnetic coupling reduces the length scale over which incoherent switching occurs.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 384: Symposium L – Magnetic Ultrathin films, Multilayers and Surfaces , 1995 , 189
Copyright
Copyright © Materials Research Society 1995

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References

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