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Interlayer magnetic coupling in exchange bias and spin valve structures with Fe-Mn and Ir-Mn antiferromagnetic layers

V. KUNCSER1, W. KEUNE2, U. von HÖRSTEN2, G. SCHINTEIE1

Affiliation

  1. National Institute of Materials Physics, P.O. Box MG 7, 77125, Bucharest-Magurele, Romania
  2. Fakultät fürPhysik, Universität Duisburg-Essen (Campus Duisburg), D-47048 Duisburg, Germany

Abstract

Exchange bias AF/Fe and spin valve AF/Fe/Cu/Fe (AF=Fe50Mn50 and Ir50Mn50) multilayer systems have been prepared by molecular beam epitaxy. Thin tracer layers enriched in the 57Fe isotope were artificially grown at the AF/Fe interface and the phase composition of the ferromagnetic layer, as well as the interfacial atomic diffusion were observed via 57Fe conversion electron Mössbauer spectroscopy. The dependence of the magnetization reversal process on training and temperature associated effects was studied by low temperature vibrating sample magnetometry, whereas the interlayer magnetic coupling was analyzed via longitudinal magneto-optic Kerr effect..

Keywords

Interfacial magnetic coupling, Multilayers, Mössbauer effect, Magneto-optic Kerr effect, Magnetometry.

Submitted at: March 28, 2010
Accepted at: June 16, 2010

Citation

V. KUNCSER, W. KEUNE, U. von HÖRSTEN, G. SCHINTEIE, Interlayer magnetic coupling in exchange bias and spin valve structures with Fe-Mn and Ir-Mn antiferromagnetic layers, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 6, pp. 1385-1393 (2010)