Assessment of local variations in the coercivity of magneto-optical media

Bruce E. Bernacki, Te Ho Wu, Masud Mansuripur

Research output: Contribution to journalArticle

9 Scopus citations


Locally varying deposition conditions and substrate characteristics of magneto-optic media may alter the domain nucleation, growth, and collapse mechanisms of the film. The use of a static tester and basic image processing equipment permits qualitative observations of anomalous domain nucleation, growth, and collapse phenomena. We present example images for a Co/Pt sample and several TbFeCo films that depict symmetrical domain expansion and collapse, directional preference for domain wall motion, domain collapse from submicroscopic domain remnants, and anomalous domain nucleation and expansion as a function of position on the sample.

Original languageEnglish (US)
Pages (from-to)6838-6840
Number of pages3
JournalJournal of Applied Physics
Issue number10
Publication statusPublished - 1993


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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