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Applied Physics Letters / Volume 95 / Issue 2 / MAGNETISM AND SUPERCONDUCTIVITY

Appl. Phys. Lett. 95, 022505 (2009); http://dx.doi.org/10.1063/1.3179553 (3 pages)

Frustration driven stripe domain formation in Co/Pt multilayer films

J. E. Davies1,2, O. Hellwig3, E. E. Fullerton4, M. Winklhofer2,5, R. D. Shull1, and Kai Liu2

1Metallurgy Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
2Department of Physics, University of California, Davis, California 95616, USA
3Hitachi Global Storage Technologies, San Jose, California 95135, USA
4Center for Magnetic Recording Research, University of California-San Diego, La Jolla, California 92093-0401, USA
5Department of Geosciences, University of Munich, D-80333 München, Germany

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(Received 12 February 2009; accepted 24 June 2009; published online 13 July 2009)

We report microscopic mechanisms for an unusual magnetization reversal behavior in Co/Pt multilayers where some of the first-order reversal curves protrude outside of the major loop. Transmission x-ray microscopy reveals a fragmented stripe domain topography when the magnetic field is reversed prior to saturation, in contrast to an interconnected pattern when reversing from a saturated state. The different domain nucleation and propagation behaviors are due to unannihilated domains from the prior field sweep. These residual domains contribute to random dipole fields that impede the subsequent domain growth and prevent domains from growing as closely together as for the interconnected pattern.

© 2009 American Institute of Physics

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KEYWORDS and PACS

Keywords

cobalt alloys, frustration, magnetic multilayers, magnetisation reversal, nucleation, platinum alloys, X-ray microscopy

PACS

  • 75.60.Jk

    Magnetization reversal mechanisms

  • 75.70.Cn

    Magnetic properties of interfaces (multilayers, superlattices, heterostructures)

  • 75.40.-s

    Critical-point effects, specific heats, short-range order

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3179553

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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