A study of interlayer exchange coupling in a Co/Cr/Co trilayer using transmission electron microscopy

A. C. Daykin*, J. P. Jakubovics, A. K. Petford-Long

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Magnetic induction maps from a sputter-deposited Co/Cr/Co trilayer have been obtained at different points of the hysteresis cycle, using a conventional transmission electron microscope. The sample shows hysteresis, with nearly parallel alignment of the magnetization in the two Co layers at remanence, but areas of antiparallel alignment developing in reverse fields. Such areas occur in similar positions at opposite points of the hysteresis loop. The strongly correlated domain patterns seen in opposite field directions suggest that the interlayer exchange coupling varies spatially. The parallel alignment observed at remanence suggests the presence of an energy barrier that needs to be overcome before antiparallel alignment can be formed. This conclusion is supported by observations of the film in a demagnetized state.

Original languageEnglish (US)
Pages (from-to)2447-2452
Number of pages6
JournalJournal of Applied Physics
Volume82
Issue number5
DOIs
StatePublished - Sep 1 1997

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'A study of interlayer exchange coupling in a Co/Cr/Co trilayer using transmission electron microscopy'. Together they form a unique fingerprint.

Cite this