DOI: 10.1063/1.352943. Localized Kerr study of the magnetic properties of an ultrathin epitaxial Co wedge grown on Pt(111)

Localized Kerr study of the magnetic properties of an ultrathin epitaxial Co wedge grown on Pt(111)

10.1063/1.352943

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

We have used the magneto-optical Kerr effect to study the thickness dependence of the perpendicular magnetic anisotropy, coercivity, nucleation field and remanence in an ultrathin Co wedge (0–9 monolayers) grown epitaxially on Pt(111) and capped by a thin Pt overlayer. In addition, the spin-reversal mechanism in the Co layers has been investigated using Kerr domain imaging. The sample showed perpendicular magnetization up to an extrapolated Co thickness of 15 monolayers (ML), with derived volume and interface anisotropy constants of −0.77 MJ/m3 and 1.15 mJ/m2, respectively. The Kerr rotation and Kerr ellipticity demonstrated linear dependences on the Co thickness (tCo), with sizeable extrapolated offsets at tCo=0, attributed to polarization of the Pt by the Co. The coercivity (Hc) and nucleation field both rose to peak values at tCo=1.5 ML, with a subsequent monotonic fall-off for higher Co thicknesses. In the case of Hc, this fall-off did not demonstrate the tCo−5/2 dependence shown by a similar Pd(111)/Co/Pd sample investigated earlier.

Bibliography

McGee, N. W. E., Johnson, M. T., de Vries, J. J., & aan de Stegge, J. (1993). Localized Kerr study of the magnetic properties of an ultrathin epitaxial Co wedge grown on Pt(111). Journal of Applied Physics, 73(7), 3418â3425.

Authors 4

N. W. E. McGee (first)
M. T. Johnson (additional)
J. J. de Vries (additional)
J. aan de Stegge (additional)

References 27 Referenced 96

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Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 9:46 a.m.)
Deposited	1 year, 6 months ago (Feb. 4, 2024, 11:39 a.m.)
Indexed	9 months, 1 week ago (Nov. 19, 2024, 10:41 a.m.)
Issued	32 years, 4 months ago (April 1, 1993)
Published	32 years, 4 months ago (April 1, 1993)
Published Print	32 years, 4 months ago (April 1, 1993)

Funders 0

None

BibTeX

@article{McGee_1993, title={Localized Kerr study of the magnetic properties of an ultrathin epitaxial Co wedge grown on Pt(111)}, volume={73}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.352943}, DOI={10.1063/1.352943}, number={7}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={McGee, N. W. E. and Johnson, M. T. and de Vries, J. J. and aan de Stegge, J.}, year={1993}, month=apr, pages={3418–3425} }

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