Using exchange bias to extend the temperature range of square loop behavior in [Pt/Co] multilayers with perpendicular anisotropy
Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física)
Suriñach, Santiago (Suriñach Cornet) (Universitat Autònoma de Barcelona. Departament de Física)
Garcia, F. (SPINTEC (Spin Electronics Research))
Auffret, Stéphane (SPINTEC (Spin Electronics Research))
Rodmacq, B. (SPINTEC (Spin Electronics Research))
Dieny, B. (SPINTEC (Spin Electronics Research))
Langlais, Veronique (Universitat Autònoma de Barcelona. Departament de Física)
Muñoz Domínguez, Juan Santiago (Universitat Autònoma de Barcelona. Departament de Física)
Baró, M. D.. (Universitat Autònoma de Barcelona. Departament de Física)
Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física)

Fecha:	2005
Resumen:	The temperature dependence of the magnetic properties of [Pt/Co]multilayers (ML), exhibiting perpendicular anisotropy, with and without exchange biasing with an antiferromagnet(AFM) has been investigated. Upon heating, a loss of the out-of-plane anisotropy and, consequently, of the remanence to saturation ratio is observed in these systems. However, such effect occurs at higher temperatures in the [Pt/Co] ML exchange coupled to the AFM than for the unbiased ML. This is attributed to the additional anisotropy induced to the ML by the ferromagnetic-antiferromagnetic exchange coupling.
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Derechos:	Tots els drets reservats.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Anisotropy ; Antiferromagnetism ; Exchange interactions ; Coercive force ; Magnetic anisotropy ; Atomic force microscopy ; Multilayers ; Magnetic hysteresis ; Curie point ; Remanence
Publicado en:	Applied physics letters, Vol. 87, Issue 24 (December 2005) , p. 242504/1-242504/3, ISSN 1077-3118

DOI: 10.1063/1.2139840

4 p, 325.4 KB

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