Low Temperature Physics: 33, 992 (2007); https://doi.org/10.1063/1.2806820 (7 pages)
Fizika Nizkikh Temperatur: Volume 33, Number 11 (November 2007), p. 1304-1312    ( to contents , go back )

Magnetic field-induced enhancement of longitudinal Kerr effect in Co/Cu(111) multilayer films

I.N. Lukienko1, N.F. Kharchenko1, V.V. Zorchenko2, and A.N. Stetsenko2

1B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
E-mail: lukijenko@ilt.kharkov.ua

2National Technical University «KhPI», 21 Frunse Str., Kharkov 61002, Ukraine
pos Анотація:

Received Jule 6, 2007, revised Jule 30, 2007

Abstract

The study into the behavior of longitudinal magneto-optical Kerr effect in the Co/Cu(111) multilayer films prepared by the magnetron sputtering method displayed its multiple field-induced enhancement at certain Cu layer thicknesses providing an extreme exchange coupling between the Co layers. It is supposed that this phenomenon results from a considerable contribution of the Co/Cu interfaces to the magneto-optical effect and is caused by the paramagnetism of conductivity electrons in the Co/Cu interfaces, enhanced by the hybridization of electron sp and d bands of copper and cobalt. The periodicity of the magneto-optical susceptibility enhancement is supposed to be due to the hybridization sensitivity to the quantum size effect in the Cu layers.

PACS: 75.70.–i Magnetic multilayers;
PACS: 78.20.Ls Magneto-optical effects;
PACS: 75.75.–n Optical properties of nanostructures.

Key words: magneto-optical Kerr effect, magnetic multilayer, enhancement of magneto-optical effects, Co/Cu.

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