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Magnetostriction and Microstructure of As-Deposited and Annealed Co Thin Films

Published online by Cambridge University Press:  21 March 2011

Winfried Brückner ,
Michael Hecker ,
Jürgen Thomas ,
Detlev Tietjen  and
Claus M. Schneider
Winfried Brückner
Affiliation:
Institute for Solid State and Materials Research Dresden, D-01171 Dresden, Germany
Michael Hecker
Affiliation:
Institute for Solid State and Materials Research Dresden, D-01171 Dresden, Germany
Jürgen Thomas
Affiliation:
Institute for Solid State and Materials Research Dresden, D-01171 Dresden, Germany
Detlev Tietjen
Affiliation:
Institute for Solid State and Materials Research Dresden, D-01171 Dresden, Germany
Claus M. Schneider
Affiliation:
Institute for Solid State and Materials Research Dresden, D-01171 Dresden, Germany
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Abstract

The magnetostriction of as-sputtered and annealed 400 nm thick Co films has been studied in longitudinal and transverse magnetic fields. The appreciable change of the magnetostriction behavior after annealing above 250 °C is correlated to grain growth and to the related change of the texture (from nearly randomly distributed hcp-Co crystallites to a c-axes texture perpendicular to the film plane). The magnetostriction behavior in the annealed samples cannot be explained by a domain magnetization within the film plane. It is assumed that a rotation of the spontaneous magnetization out of the film plane occurs due to the development of a perpendicular magnetic anisotropy.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 674: Symposia T/U/V – Applications of Ferromagnetic and Optical Materials, Storage and Magnetoelectronics , 2001 , T3.3
Copyright
Copyright © Materials Research Society 2001

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References

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