Permeability spectra of hole arrays defined on single layer permalloy thin films

Craig A. Grimes, Philip L. Trouilloud, Janet K. Lumpp, Gary C. Bush

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


Although considerable work has been done investigating the properties of arrays of magnetic elements, there have been few investigations on the reverse geometry, i.e., an array of nonmagnetic regions defined within a magnetic thin film. The 10 Hz BH loops. 10-500 MHz permeability spectra, and domain patterns of homogeneous, single layer 100 nm radio frequency (rf) sputtered Ni81Fe19 thin films with arrays of 23-, 50-. and 100-μm-diam holes defined by laser ablation were measured. The holes were defined in a grid along the hard and easy axes of the sample. Letting (x,y) represent, respectively, the hole spacing parallel to the easy and hard axes, the point to point spacing of the ablated circular regions was varied from (5, 2 mm) to (0.1, 0.1 mm),

Original languageEnglish
Pages (from-to)4720-4722
Number of pages3
JournalJournal of Applied Physics
Issue number8 PART 2A
StatePublished - Apr 15 1997

ASJC Scopus subject areas

  • Physics and Astronomy (all)


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