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

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

3425

Lastpage

3427

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.538645

Filename

538645