Investigation of ion beam deposited spin valve interface structure by 59Co nuclear magnetic resonance

59Co nuclear magnetic resonance was used to study the bulk and interface microstructure in the unpinned Co layer in a series of highly (111)-textured ion beam deposited spin valves. The intent of the study is to determine the degree of Co interface intermixing and any possible variation of the Co la...

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Bibliographic Details
Published in:Journal of applied physics 1999-04, Vol.85 (8), p.4439-4441
Main Authors: Jȩdryka, Ewa, Bailey, William E., Wójcik, Marek, Nadolski, Stefan, Wang, Shan X.
Format: Article
Language:English
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Summary:59Co nuclear magnetic resonance was used to study the bulk and interface microstructure in the unpinned Co layer in a series of highly (111)-textured ion beam deposited spin valves. The intent of the study is to determine the degree of Co interface intermixing and any possible variation of the Co layer microstructure as a result of weakening (111) texture of the NiFe/Co/Cu/Co/NiFe/FeMn film stack. We found that the interfaces are diffused over ∼2 monolayers on both sides of the Co layer, involving an equivalent of about 3 Å of Co per interface and vary only slightly with deteriorating texture. The main structural change is the drop of perfect fcc stacking in the Co layer.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.370367