Magnetic and magneto-optic properties of amorphous Gd-FeAu films
Amorphous rare-earth transition metal alloys of composition (Gd/sub 1-x/Fe/sub x/)/sub 1-y/Au/sub y/ with x = 0.74, 0.77, and 0< or =y< or =0.40 were prepared by evaporation onto rotating glass substrates. The magnetic and magneto-optic properties have been investigated in the temperature range 4.2< or =T< or =T/sub C/ revealing a decrease of the compensation and Curie temperature, the uniaxial anisotropy, and the Faraday and Kerr rotation with increasing gold content. The temperature behavior can be interpreted in terms of a mean-field analysis indicating a pronounced influence of the gold on the iron moment and the exchange constants. The temperature dependence of the Faraday rotation can be described in terms of the sublattice magnetizations inferred from the fit of the mean-field theory to the measured saturation magnetization.
- Research Organization:
- Philips GmbH Forschungslaboratorium Hamburg, Vogt-Koelln-Strasse 30, D-2000 Hamburg 54, Federal Republic of Germany
- OSTI ID:
- 6462313
- Journal Information:
- J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 59:3; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
AMORPHOUS STATE
CHEMICAL COMPOSITION
CURIE POINT
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
EVAPORATION
FARADAY EFFECT
FILMS
GADOLINIUM ALLOYS
GOLD ALLOYS
IRON ALLOYS
KERR EFFECT
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
MAGNETIZATION
MAGNETO-OPTICAL EFFECTS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
SATURATION
TEMPERATURE EFFECTS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE