Control of the permeability loss-peak frequency of Ni81Fe19 thin films through laser ablation of triangular and square cluster geometries

Craig A. Grimes, Janet K. Lumpp

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

Laser ablation arrays of triangular and square shaped clusters, comprised of 23 μm diam circular holes, are defined upon 100 nm thick Ni81Fe19 films used to control the rf permeability spectra. Cluster-to-cluster spacing is varied from 200 to 600 μm. For each geometry it is found that the loss peak frequency and permeability magnitude shift lower, in a step-wise fashion, at a cluster-to-cluster spacing between 275 and 300 μm. The nonlinear shift in the behavior of the permeability spectra correlates with a dramatic increase in domain wall density.

Original languageEnglish
Pages (from-to)5254-5256
Number of pages3
JournalJournal of Applied Physics
Volume87
Issue number9 II
DOIs
StatePublished - May 2000
Event44th Annual Conference on Magnetism and Magnetic Materials - San Jose, CA, United States
Duration: Nov 15 1999Nov 18 1999

ASJC Scopus subject areas

  • General Physics and Astronomy

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