DOI: 10.1063/1.355653. Magneto-optical Kerr effect study of ac susceptibilities in ultrathin cobalt films

Magneto-optical Kerr effect study of ac susceptibilities in ultrathin cobalt films

10.1063/1.355653

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

The ac susceptibility of ultrathin Co/Cu(100) films has been investigated in situ under ultrahigh vacuum conditions using the magneto-optical Kerr effect. A conventional Kerr effect setup was combined with an ac-field modulation technique to improve the experimental detection limit. A sensitivity in the range of 10−8 rad for the Kerr ellipticity has been achieved in the present study. The ac susceptibility χac of the investigated cobalt films is mainly characterized by a pronounced and sharp maximum as a function of the temperature T. This χac(T) dependency corresponds to the ferromagnetic-paramagnetic phase transition occurring at the Curie temperature Tc of the cobalt films, which is also confirmed by experimental observation of the hysteresis behavior. Besides the measurement of Curie temperatures, the experimental technique presented here allows the determination of magnetic properties for ultrathin films even in the paramagnetic regime far above Tc.

Bibliography

Berger, A., Knappmann, S., & Oepen, H. P. (1994). Magneto-optical Kerr effect study of ac susceptibilities in ultrathin cobalt films. Journal of Applied Physics, 75(10), 5598â5600.

Authors 3

A. Berger (first)
S. Knappmann (additional)
H. P. Oepen (additional)

References 16 Referenced 40

10.1016/0304-8853(91)90833-V / J. Magn. Magn. Mater. (1991)
{'key': '2024020212304841100_r2', 'first-page': '2631', 'volume': '41', 'year': '1990', 'journal-title': 'Phys. Rev. B'} / Phys. Rev. B (1990)
10.1063/1.345954 / J. Appl. Phys. (1990)
10.1103/PhysRevLett.67.1646 / Phys. Rev. Lett. (1991)
{'key': '2024020212304841100_r5'}
{'key': '2024020212304841100_r6'}
10.1103/PhysRevB.47.11571 / Phys. Rev. B (1993)
10.1103/PhysRevLett.64.1059 / Phys. Rev. Lett. (1990)
10.1016/0039-6028(90)90527-F / Surf. Sci. (1990)
{'key': '2024020212304841100_r10', 'first-page': '483', 'volume': '42–44', 'year': '1992', 'journal-title': 'Ultramicroscopy'} / Ultramicroscopy (1992)
10.1007/BF00617019 / Appl. Phys. A (1989)
10.1016/0304-8853(90)90113-5 / J. Magn. Magn. Mater. (1990)
10.1103/PhysRev.97.334 / Phys. Rev. (1955)
{'key': '2024020212304841100_r14'}
10.1016/0304-8853(91)90838-2 / J. Magn. Magn. Mater. (1991)
10.1016/0304-8853(91)90837-Z / J. Magn. Magn. Mater. (1991)

Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 8:37 a.m.)
Deposited	1 year, 6 months ago (Feb. 2, 2024, 8:21 a.m.)
Indexed	4 days, 13 hours ago (Aug. 23, 2025, 9:47 p.m.)
Issued	31 years, 3 months ago (May 15, 1994)
Published	31 years, 3 months ago (May 15, 1994)
Published Print	31 years, 3 months ago (May 15, 1994)

Funders 0

None

BibTeX

@article{Berger_1994, title={Magneto-optical Kerr effect study of ac susceptibilities in ultrathin cobalt films}, volume={75}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.355653}, DOI={10.1063/1.355653}, number={10}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Berger, A. and Knappmann, S. and Oepen, H. P.}, year={1994}, month=may, pages={5598–5600} }

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