Title :
Domain state model for exchange bias: training effect of diluted Co/sub 1-y/O on exchange bias in Co/CoO
Author :
Beschoten, B. ; Keller, James ; Tillmanns, A. ; Miltenyi, P. ; Guntherodt, G.
Author_Institution :
2. Phys. Inst., RWTH Aachen, Germany
Abstract :
Summary form only given. Summary only form given. Recently, there has been a strong interest in the exchange bias effect (EB) as its origin and its related phenomena are not fully understood. We present systematic investigations of a variety of EB phenomena for Co/Co/sub 1-y/O bilayers as a function of dilution y. These phenomena include besides EB and coercivity fields, the shape and the vertical shift of the hysteresis loops, the temperature dependence of the EB field, the training effect (TE), and the cooling field dependence. By comparing these results to Monte Carlo (MC) simulations, the DS model is shown to provide a consistent microscopic description of the origin of EB as well as of a variety of related phenomena.
Keywords :
Monte Carlo methods; antiferromagnetic materials; cobalt; cobalt compounds; coercive force; exchange interactions (electron); ferromagnetic materials; interface magnetism; magnetic domains; magnetic hysteresis; Co-CoO; Co/CoO bilayers; Monte Carlo simulations; coercivity fields; cooling field dependence; domain state model; exchange bias; magnetic hysteresis loops; temperature dependence; training effect; Antiferromagnetic materials; Coercive force; Cooling; Couplings; Hysteresis; Magnetization reversal; Monte Carlo methods; Shape; Tellurium; Temperature dependence;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1000598
