Title :
The interplay between NiMn/NiFe epitaxial growth and NiMn atomic ordering in NiMn/NiFe exchange biased layers: a structural perspective
Author :
Wong, Bunsen Y. ; Mitsumata, Chiharu ; Prakash, Shiva ; Laughlin, David E. ; Kobayashi, Toshio
Author_Institution :
Carnegie Mellon Univ., Pittsburgh, PA, USA
fDate :
9/1/1996 12:00:00 AM
Abstract :
The atomic structure across the annealed NiMn/NiFe exchange coupled interface has been studied. NiMn grows epitaxially on NiFe (111) according to cube on cube orientation relationship. This yields a semi-coherent interface which is made up of atomic ledges. Due to the stabilizing effect of fcc NiFe, it was found that the NiMn crystal cannot attain the ordered L10 structure thus holding down the strength of the exchange bias field. However, twinning at the interface seemingly helps to assist NiMn ordering
Keywords :
annealing; epitaxial growth; exchange interactions (electron); iron alloys; magnetic epitaxial layers; magnetic multilayers; manganese alloys; nickel alloys; twinning; NiMn-NiFe; annealing; atomic ledges; atomic ordering; cube on cube orientation; epitaxial growth; exchange biased layer; semi-coherent interface; structure; twinning; Anisotropic magnetoresistance; Annealing; Antiferromagnetic materials; Atomic layer deposition; Couplings; Crystallization; Epitaxial growth; Giant magnetoresistance; Helium; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
