Document Type

Article

Publication Title

Journal of Applied Physics

Publication Date

6-1-2003

Volume

93

Issue

11

Disciplines

Biochemistry | Chemistry | Life Sciences | Physical Sciences and Mathematics | Physics

Abstract

Interparticle interaction among single domain nanosize magnetic particles embedded in nonmagnetic matrix was studied. Attention was paid to concentrated Cu–Co granular thin films with a fixed magnetic volume fraction (20%). By analyzing theoretical models and comparing with experimental results, a dimensional constraint on the magnetic properties was found. As the film thickness reduces toward the thin limit the interparticle interaction plays important roles in modifying the magnetic behavior. The dipolar interaction energy was calculated among magnetic particles including far-neighbor interaction for films with different thickness values. When magnetization variation is included in the calculation, the resulting calculated interaction energy versus film thickness shows remarkable agreement with the variation of experimental observed peak temperature derived from magnetic blocking curves.

Keywords

Magnetic films, thin film thickness

DOI

10.1063/1.1569993

Rights

© 2003 American Institute of Physics

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