Effect of anisotropy on the critical antiferromagnet thickness in exchange-biased bilayers

M. S. Lund, W. A. A. Macedo,* Kai Liu, J. Nogués, Ivan K. Schuller, and C. Leighton Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455 Physics Department, University of California–San Diego, La Jolla, California 92093-0319 Department of Physics, University of California–Davis, California 95616 Institució Catalana de Recerca i Estudis Avançats (ICREA) and Departament de Fı́sica, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain ~Received 12 March 2002; published 19 August 2002!