Enhancement of magnetic coercivity in Fe/Mn and Co/Mn bilayers

The dependence of the coercive field and saturated magnetization on the interfacial width is studied to understand the driving mechanism of the coercive enhancement in Fe/Mn and Co/Mn bilayers. We establish a controlled annealing procedure to reveal the origin of this enhancement. Using a model, we...

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Veröffentlicht in:	Journal of magnetism and magnetic materials 2010-09, Vol.322 (17), p.2593-2595
Hauptverfasser:	Youssef, J. Ben, Le Graet, C., Pogossian, S., Spenato, D., Dekadjevi, D.T.
Format:	Artikel
Sprache:	eng
Schlagworte:	Annealing Coercive force Condensed Matter Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures) Iron Magnetic properties and materials Magnetic properties of surface, thin films and multilayers Magnetism Magnetization Magnetization reversal Manganese Mathematical analysis Origins Physics Thin films coercive enhancement
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Beschreibung
Zusammenfassung:	The dependence of the coercive field and saturated magnetization on the interfacial width is studied to understand the driving mechanism of the coercive enhancement in Fe/Mn and Co/Mn bilayers. We establish a controlled annealing procedure to reveal the origin of this enhancement. Using a model, we reveal that the full interfacial width plays a keyrole, and that no Mn based finite size effects drive the mechanism. We show that this mechanism is common to both type of bilayers.
ISSN:	0304-8853 1873-4766
DOI:	10.1016/j.jmmm.2010.03.027