MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Coercivity Control of FePt Nanoparticles by Interfacial Disorder
Y. K. TakahashiS. OkamotoO. KitakamiY. ShimadaK. Hono
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JOURNALS FREE ACCESS

2006 Volume 47 Issue 1 Pages 38-42

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Abstract

Thin disordered layer can be formed by sputter-deposition of alumina on fully ordered L10 FePt nanoparticle assembly, due to plasma damage. The thickness of the disordered layer can be tuned by the sputtering power and deposition time of the alumina target. This partial disordering causes substantial decrease in the coercivity, which may be effective to adjust very high switching field of L10 FePt to practical magnetic recording systems.

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© 2006 The Japan Institute of Metals and Materials
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