• DocumentCode
    3560088
  • Title

    Effect of the Ferromagnetic Layer Thickness on the Blocking Temperature in IrMn/CoFe Exchange Couples

  • Author

    Vallejo-Fernandez, G. ; Kaeswurm, B. ; Fernandez-Outon, L.E. ; O´Grady, K.

  • Author_Institution
    Dept. of Phys., Univ. of York, York
  • Volume
    44
  • Issue
    11
  • fYear
    2008
  • Firstpage
    2835
  • Lastpage
    2838
  • Abstract
    In this work we present a study of the thermal stability of IrMn/CoFe exchange couples as a function of the thickness of the ferromagnetic (F) layer tF. We find a monotonic decrease in the average blocking temperature (TB) with tF of up to 29% for tF = 12 nm. We have quantified the effect of the exchange field (H*) from the F layer on the antiferromagnetic (AF) layer and its effect on the thermal stability of the AF. H* can increase the degree of thermal activation by up to 44%.
  • Keywords
    antiferromagnetic materials; antiferromagnetism; cobalt alloys; exchange interactions (electron); ferromagnetic materials; iridium alloys; iron alloys; magnetic transitions; manganese alloys; thermal stability; IrMn-CoFe; antiferromagnetic layer; blocking temperature; ferromagnetic layer thickness; magnetic exchange couples; thermal activation; thermal stability; Blocking temperature; IrMn; exchange bias;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.2008.2001812
  • Filename
    4717425
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3560088