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Structural and Magnetic Properties of e-Beam Prepared CoxPt1-x Alloy Films

Published online by Cambridge University Press:  03 September 2012

J.V. Harzer ,
B. Hillebrands ,
I.S. Pogosova ,
M. Herrmann ,
G. Güntherodt  and
D. Weller
J.V. Harzer
Affiliation:
2. Physikalisches Institut, Rheinisch-Westfälische Technische Hochschule Aachen, Templergraben 55, W-5100 Aachen, Germany.
B. Hillebrands
Affiliation:
2. Physikalisches Institut, Rheinisch-Westfälische Technische Hochschule Aachen, Templergraben 55, W-5100 Aachen, Germany.
I.S. Pogosova
Affiliation:
2. Physikalisches Institut, Rheinisch-Westfälische Technische Hochschule Aachen, Templergraben 55, W-5100 Aachen, Germany.
M. Herrmann
Affiliation:
2. Physikalisches Institut, Rheinisch-Westfälische Technische Hochschule Aachen, Templergraben 55, W-5100 Aachen, Germany.
G. Güntherodt
Affiliation:
2. Physikalisches Institut, Rheinisch-Westfälische Technische Hochschule Aachen, Templergraben 55, W-5100 Aachen, Germany.
D. Weller
Affiliation:
IBM Almaden Research Center, San Jose, CA 95120, U.S.A.
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Abstract

We have investigated structural and magnetic properties of CoPt alloy films with strong perpendicular magnetic anisotropy in the thickness range between 100Å and 400A. From a detailed x-ray analysis we find highly (111) -textured CoPt Microcrystal-lites in all samples. STM studies reveal a granular topography with grain diameters of up to 250Å. Measurements of hysteresis loops yield a saturation field which increases with thickness, and which is consistent with a freely mobile domain Model. Brillouin light scattering measurements of the frequencies of the surface and standing spin wave modes yield a bulk exchange constant, which is strongly dependent on the Pt content.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 313: Symposium Q1 – Magnetic Ultrathin Films, Multilayers and Surfaces/Magnetic Interfaces-Physics and Characterizations , 1993 , 387
Copyright
Copyright © Materials Research Society 1993

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References

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