Thermomagnetically written domains in TbFeCo thin films

Journal Article · Tue Nov 01 04:00:00 EST 1988 · IEEE Trans. Magn.; (United States)

OSTI ID:5919509

Reim, W; Weller, D

Characteristic features of thermomagnetically written domains in amorphous Tb/sub x/(Fe/sub 90/Co/sub 10/)/sub 100-x/ alloy thin films having different magnetic properties are reported. In particular, the writing process in materials with low Tb content chi /le/ 21 dominated by the demagnetizing field is compared to the bias field dominated process in Tb rich samples 22 /le/ chi /le/ 25. Domain wall movement over lateral dimensions of the bit size is found for Tb poor materials while for chi /ge/ 22 domain boundaries are primarily determined by the area heated up to the Curie-temperature. The importance of mechanical stress on domain formation and irreversible changes of the storage medium due to overheating in the writing process are reported.

• Research Organization: 9900913
• OSTI ID: 5919509
• Journal Information: IEEE Trans. Magn.; (United States), Journal Name: IEEE Trans. Magn.; (United States) Vol. 24:6; ISSN IEMGA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
COBALT ALLOYS
DOMAIN STRUCTURE
FILMS
IRON ALLOYS
MAGNETIC PROPERTIES
MAGNETIZATION
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
TERBIUM ALLOYS
THERMODYNAMICS
THIN FILMS