Effects of seed layer on the coercivity and exchange bias in Co/Ag/CoO heterostructures

J. C. Eckert, M. Seetin, T. Gredig, E. D. Dahlberg

Research output: Contribution to journalConference article

Abstract

Magnetic multilayers of the form Co/Ag/CoO, grown on Si3N 4 substrates, with seed layers of Ag or Ta of various thicknesses were studied. There is a dramatic difference between the exchange fields and between the coercive fields for the differing seed layers such that, for a Ag seed layer, the loop can be fully shifted to one side of zero field whereas, with a Ta seed layer, this behavior is not observed. One important difference in the seed layers is the layer roughness; the Ag seed layer is as much as six times rougher than the Ta layer, as determined by atomic force microscopy.

Original languageEnglish (US)
Pages (from-to)1210-1211
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume272-276
DOIs
StatePublished - May 1 2004
EventProceedings of the International Conference on Magnetism - Rome, Italy
Duration: Jul 27 2003Aug 1 2003

Keywords

  • Exchange bias
  • Seed layer roughness
  • Training effect

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