EXCHANGE STIFFNESS CONSTANT AND EFFECTIVE GYROMAGNETIC FACTOR OF GD, TB AND ND CONTAINING, AMORPHOUS RARE-EARTH - TRANSITION-METAL FILMS

Authors
MATHIEU C HILLEBRANDS B RAASCH D
Citation
C. Mathieu et al., EXCHANGE STIFFNESS CONSTANT AND EFFECTIVE GYROMAGNETIC FACTOR OF GD, TB AND ND CONTAINING, AMORPHOUS RARE-EARTH - TRANSITION-METAL FILMS, IEEE transactions on magnetics, 30(6), 1994, pp. 4434-4436
Citations number
9
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on magnetics → ACNP
ISSN journal
00189464
Volume
30
Issue
6
Year of publication
1994
Part
1
Pages
4434 - 4436
Database
ISI
SICI code
0018-9464(1994)30:6<4434:ESCAEG>2.0.ZU;2-E
Abstract
The exchange stiffness constant and the effective gyromagnetic factor of amorphous Gd13.5Tb6.2Fe80.3, Gd21.2Co78.8, Gd19.4Nd6.1Fe74.5 and Gd 19.6Nd10.3Fe70.1 alloy films have been determined by Brillouin light s cattering and from measurements of the domain wall energy. All samples , which show a constant Curie temperature of 465K, exhibit the same ex change stiffness constant, as;measured by Brillouin light scattering. The obtained values of both methods agree for the Gd13.5Tb6.2Fe80.3 an d Gd21.2Co78.8 films, but not for the Nd containing films. The latter is attributed to a break down of the standard Bloch domain wall equati on in Nd containing systems.