Using exchange bias to extend the temperature range of square loop behavior in [PtCo] multilayers with perpendicular anisotropy

J. Sort, F. Garcia, S. Auffret, B. Rodmacq, B. Dieny, V. Langlais, S. Suriñach, J. S. Muñoz, M. D. Baró, J. Nogús

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12 Citations (Scopus)

Abstract

The temperature dependence of the magnetic properties of [PtCo] 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 [PtCo] 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. © 2005 American Institute of Physics.
Original languageEnglish
Article number242504
Pages (from-to)1-3
JournalApplied Physics Letters
Volume87
DOIs
Publication statusPublished - 19 Dec 2005

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