Magneto-optical properties of (Pr,Nd)-(Tb,Dy)-FeCo amorphous films

Conference · Fri Sep 01 04:00:00 EDT 1989 · IEEE (Institute of Electrical and Electronics Engineers) Transactions on Magnetics; (USA)

OSTI ID:5180774

Nakada, M; Yokota, H; Yumoto, S; Okada, O; Gokan, H ^[1]

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1. Microelectronics Research Labs., NEC Corp., Miyazaki, Miyamae-ku, Kawasaki 213 (JP)

The authors discuss a systematic study of magneto-optical properties for four different varieties of the (Pr,Nd)-(Tb,Dy)-FeCo system focusing on temperature and wavelength dependence of Kerr rotation {theta}/sub {kappa}/ for alloy films and multilayered films. The relation between Curie temperature Tc and kerr rotation {theta}/sub {kappa}/ at 830nm wavelength was obtained for films, where Co ratio to FeCo was less than 20at%. It was found that in the range of 500 nm to 900 nm the absolute magnitude of {theta}/sub {kappa}/ for all quaternary systems was always less than that for Dy-FeCo. These results suggest that amorphous rare earth-FeCo alloy films, containing Nd or Pr, are not superior to (Tb,Dy)-FeCo films in regard to recording sensitivity and recording density in magneto-optical disks.

• OSTI ID: 5180774
• Report Number(s): CONF-890309--
• Conference Information: Journal Name: IEEE (Institute of Electrical and Electronics Engineers) Transactions on Magnetics; (USA) Journal Volume: 25:5
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
AMORPHOUS STATE
CHEMICAL COMPOSITION
COBALT ALLOYS
CRYSTAL STRUCTURE
DYSPROSIUM ALLOYS
FILMS
IRON ALLOYS
LAYERS
MAGNETIC DISKS
MAGNETIC STORAGE DEVICES
MAGNETO-OPTICAL EFFECTS
MEMORY DEVICES
MICROSTRUCTURE
NEODYMIUM ALLOYS
PRASEODYMIUM ALLOYS
RARE EARTH ALLOYS
TERBIUM ALLOYS
THIN FILMS