Vol Page/Article: Search Volumes 61 - Present: Abstract View New Search General Search Help ------------------------------------------------------------------------ Article Collection: View Collection Help (Click on the COLLECT ARTICLE to add an article.) ------------------------------------------------------------------------ [ Back To Hit List | Next search result abstract | Issue Table of Contents | Bottom of Page <#bot>] ------------------------------------------------------------------------ Physical Review B (Condensed Matter and Materials Physics -1(I)) Phys. Rev. B 67, 172405 (2003) (4 pages) Full Text: [ PDF (218 kB) GZipped PS Order Document ] ------------------------------------------------------------------------ Onset of exchange bias in ultrathin antiferromagnetic layers M. Ali, C. H. Marrows, and B. J. Hickey Department of Physics and Astronomy, E. C. Stoner Laboratory, University of Leeds, Leeds LS2 9JT, United Kingdom (Received 4 November 2002; published 16 May 2003) Current theoretical explanations of exchange biasing are based upon magnetic domains in the antiferromagnetic layer being responsible for the phenomenon. Both the ideas of planar and perpendicular domain walls have been developed in explaining the various observed effects. Here the exchange bias (Hex) has been investigated as a function of the antiferromagnetic (AF) layer thickness (tAF) in IrMn/Co and FeMn/Co exchange biased systems. The results indicate that the onset of biasing occurs for tAF which appears to be far too low (~10 Å) to accommodate planar domain walls (~200 Å) within the AF layer. From these results it is inferred that planar domain walls cannot therefore be responsible for biasing, and that theoretical calculations involving perpendicular domain walls in the antiferromagnetic layers appear to be the more plausible explanation. ©2003 The American Physical Society URL: http://link.aps.org/abstract/PRB/v67/e172405 doi: 10.1103/PhysRevB.67.172405 PACS: 75.70.Cn, 75.60.Ch Additional Information ------------------------------------------------------------------------ Full Text: [ PDF (218 kB) GZipped PS Order Document ] ------------------------------------------------------------------------ References Citation links [e.g., Phys. Rev. D 40, 2172 (1989)] go to online journal abstracts. Other links (see Reference Information ) are available with your current login. Navigation of links may be more efficient using a second browser window . # W.H. Meiklejohn and C.P. Bean, Phys. Rev. 105, 904 (1957) . # L. Wee, R.L. Stamps, and R.E. Camley, J. Appl. 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