Study of the magneto-optic Kerr effect of Co ultra-thin films

Journal Article · Mon Mar 01 04:00:00 EST 1993 · IEEE Translation Journal on Magnetics in Japan (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/TJMJ.1993.4565606· OSTI ID:5728661

Nakajima, K; Miyazaki, T ^[1]

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1. Tohoku Univ., Sendai (Japan)

A system for measurement of the surface magnetooptic Kerr effect (dubbed SMOKE) has been developed. Measurement sensitivity is 5 x 10[sup [minus]4] degrees, and the absolute value of the rotation angle can be measured. The Kerr rotation, [theta][sub K], and ellipticity, [eta][sub K], of Co thin films deposited on glass substrates in ultra-high vacuum were measured in-situ. When the film thickness was greater than 800 [angstrom], experimental values were in good agreement with numerical calculations, in which the n, k and magnetooptic constant Q[sub 0] of 130 [angstrom] thick Co film were used. However, [theta][sub K], and [eta][sub K], decrease rapidly for films thinner than 40 [angstrom], and fell nearly to zero for film thicknesses below about 18 [angstrom].

• OSTI ID: 5728661
• Journal Information: IEEE Translation Journal on Magnetics in Japan (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Translation Journal on Magnetics in Japan (Institute of Electrical and Electronics Engineers); (United States) Vol. 8:3; ISSN 0882-4959; ISSN ITJJER
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
COBALT
DATA
DIELECTRIC PROPERTIES
DIMENSIONS
ELECTRICAL PROPERTIES
ELEMENTS
EXPERIMENTAL DATA
FILMS
HYSTERESIS
INFORMATION
KERR EFFECT
MAGNETO-OPTICAL EFFECTS
METALS
NUMERICAL DATA
PHYSICAL PROPERTIES
THICKNESS
THIN FILMS
TRANSITION ELEMENTS