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Direct Experimental Study of Domain Structure In Magnetic Multilayers

Published online by Cambridge University Press:  15 February 2011

V.I. Nikitenko ,
V.S. Gornakov ,
L.M. Dedukh ,
L.H. Bennett ,
R.D. McMichael ,
L.J. Swartzendruber ,
S. Hua ,
D.L. Lashmore  and
A.J. Shapiro
V.I. Nikitenko
Affiliation:
Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow Dist., 142432, Russia
V.S. Gornakov
Affiliation:
Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow Dist., 142432, Russia
L.M. Dedukh
Affiliation:
Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow Dist., 142432, Russia
L.H. Bennett
Affiliation:
National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
R.D. McMichael
Affiliation:
National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
L.J. Swartzendruber
Affiliation:
National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
S. Hua
Affiliation:
National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
D.L. Lashmore
Affiliation:
Materials Innovation, West Lebanon, NH 03784, USA
A.J. Shapiro
Affiliation:
National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
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Abstract

We have applied a polarized light optical microscope in reflective mode with a Bi-substituted yttrium-iron-garnet indicator film with in-plane anisotropy for visualization of the magnetostatic fields produced by nanostructured magnetic CoNiCu/Cu electrodeposited multilayers. By analysis of the magneto-optical stray field image, detailed information is obtained not only on the as-grown multilayer magnetic structure but on its change during the magnetization reversal processes. The influences of crystal lattice defects and nonuniformity of the nonmagnetic spacers thicknesses on the domain wall nucleation and motion are studied. Peculiarities of the re-magnetization of antiferromagnetically exchange coupled multilayers are discussed, including real-time observations of domain wall creep in a constant applied field.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 384: Symposium L – Magnetic Ultrathin films, Multilayers and Surfaces , 1995 , 277
Copyright
Copyright © Materials Research Society 1995

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References

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