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Applied Physics Letters / Volume 97 / Issue 5 / MAGNETISM AND SUPERCONDUCTIVITY

Appl. Phys. Lett. 97, 052507 (2010); http://dx.doi.org/10.1063/1.3474621 (3 pages)

Magnetic domain compensation effect on the magnetodynamic response of ferromagnetic elements

C. Patschureck1, R. Kaltofen1, I. Mönch1, R. Schäfer1, L. Schultz1,2, and J. McCord1,3

1Institute for Metallic Materials, IFW Dresden, P.O. Box 270116, 01171 Dresden, Germany
2Department of Mechanical Engineering, Institute for Materials Science, TU Dresden, 01062 Dresden, Germany
3Institute of Ion Beam Physics and Materials Research, Forschungszentrum Dresden-Rossendorf, P.O. Box 510119, 01314 Dresden, Germany

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(Received 17 May 2010; accepted 12 July 2010; published online 6 August 2010)

The capacity to tune the ferromagnetic resonance frequency in a soft ferromagnetic film relies on the ability to tailor the uniaxial anisotropy of the film material. We achieved a systematic change in anisotropy field with all other material properties remaining constant by preparing Ni18Fe19/Co60Fe20B20 multilayers. We show that in patterned films deviations from the regular Landau domain pattern occur, which compensate magnetic anisotropy effects and thereby lead to a precessional frequency independent of anisotropy. These results demonstrate that even small changes in the magnetic domain structure counteracts anisotropy adjustments in optimizing the magnetodynamic response in mesoscopic thin film elements.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

boron alloys, cobalt alloys, ferromagnetic materials, ferromagnetic resonance, iron alloys, Landau levels, magnetic anisotropy, magnetic domain walls, magnetic multilayers, magnetic thin films, nickel alloys

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3474621

PUBLICATION DATA

ISSN

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

Publisher

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

For access to fully linked references, you need to log in.
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