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In-Situ Magneto-Optical Kerr Effect of Epitaxial GD (0001)

Published online by Cambridge University Press:  03 September 2012

C. Chappert ,
D. Weiler ,
H. Tang ,
J.C. Scott ,
H. Hopster  and
D.P. Pappas
C. Chappert
Affiliation:
IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA, 95120
D. Weiler
Affiliation:
IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA, 95120
H. Tang
Affiliation:
IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA, 95120
J.C. Scott
Affiliation:
IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA, 95120
H. Hopster
Affiliation:
IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA, 95120
D.P. Pappas
Affiliation:
IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA, 95120
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Abstract

We have characterized magnetization loops of epitaxially grown Gd (0001) films on W (110) in the temperature range 145≤T≤300K. This was accomplished by measuring magneto-optical Kerr loops in UHV, in the transverse geometry, using a 2×10-4 deg sensitivity differential detector and He-Ne laser light.

Films grown in the Stranski-Krastanov (SK) Mode (growth temperature 400°C) and films grown in a Frank-van-der-Merwe (FM) like Mode (growth temperature 20°C) behave significantly differently. While the room temperature grown films (FM) show square hysteresis behavior only after an annealing cycle to at least 300°C, the higher growth temperature (SK) leads to highly remanent films in the as grown state.

The hysteresis behavior of these films is most important in conjunction with recently reported spin-polarized photoemission results, which showed that the growth temperature and therefore the film morphology has a strong influence on the surface magnetic reconstruction of Gd (0001) [1].

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 , 457
Copyright
Copyright © Materials Research Society 1993

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References

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