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Interfacial Contributions to Magnetostriction of Ferromagnetic Layers for Magnetoresistive Sensors

Published online by Cambridge University Press:  01 February 2011

E.W. Singleton  and
K.J. Duxstad
E.W. Singleton
Affiliation:
Seagate Technology 7801 Computer Avenue South Minneapolis, MN 55435-5489
K.J. Duxstad
Affiliation:
Seagate Technology 7801 Computer Avenue South Minneapolis, MN 55435-5489
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Abstract

We have experimentally measured magnetostriction of thin CoFe layers when deposited with various seed and capping layers. Seed and capping layers were chosen to be materials that may be used in spin-valve (SV) type structures. Materials deposited adjacent to the magnetic layer include Cu, Ta and TaN. The experimental results are interpreted using a model that allows separation of bulk and interface contributions to the measured magnetostriction [1].Results show a clear interfacial contribution that is dependent upon the material at the interface of the magnetic layer. The results demonstrate that surface contributions to the magnetostriction dominate as layer thickness decreases.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 721: Symposia E/J – Texture and Microstructure in Electronic and Magnetic Films – Nanostructural Magnetic Materials for Data Storage , 2002 , E6.9
Copyright
Copyright © Materials Research Society 2002

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