Monodomain configurations due to bias effect in NiO/NiFe microstructures

J. C. Wu, H. W. Huang, Chih Huang Lai, Te Ho Wu

Research output: Contribution to journalConference article

12 Citations (Scopus)

Abstract

Magnetic domain configurations of microstructured permalloy exchange coupled by an antiferromagnetic (NiO) thin film is presented. NiO/NiFe bilayer micrometer array elements were fabricated using electron beam lithography through a lift-off technique. The magnetic force microscopy images of the elliptical and rectangular elements with various aspect ratios showed dipole-like magnetic domain structures. The bright/dark arc contrast associated with the magnetic pole strength was dependent on the anisotropic exchange field. Furthermore, the shape anisotropy can overwhelm anisotropic exchange in patterned elements with a high aspect ratio and thicker permalloy film.

Original languageEnglish
Pages (from-to)4948-4950
Number of pages3
JournalJournal of Applied Physics
Volume87
Issue number9 II
DOIs
Publication statusPublished - 2000 May
Event44th Annual Conference on Magnetism and Magnetic Materials - San Jose, CA, United States
Duration: 1999 Nov 151999 Nov 18

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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