Real and imaginary components of the alternating current magnetic susceptibility of RAl2 (R=Gd, Dy, and Er) in the ferromagnetic region

Citation
Em. Levin et al., Real and imaginary components of the alternating current magnetic susceptibility of RAl2 (R=Gd, Dy, and Er) in the ferromagnetic region, J APPL PHYS, 90(12), 2001, pp. 6255-6262
Citations number
21
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF APPLIED PHYSICS
ISSN journal
00218979 → ACNP
Volume
90
Issue
12
Year of publication
2001
Pages
6255 - 6262
Database
ISI
SICI code
0021-8979(200112)90:12<6255:RAICOT>2.0.ZU;2-K
Abstract
The real (chi'(ac)) and imaginary (chi " (ac)) components of the ac magneti c susceptibility of the polycrystalline GdAl2, DyAl2, and ErAl2 have been m easured as functions of temperature, ac and bias dc magnetic field amplitud e, and ac magnetic field frequency. Both chi'(ac) and chi " (ac) of the fer romagnetic DyAl2 and ErAl2 are strongly dependent on the ac magnetic field parameters, especially when compared with those of the ferromagnetic GdAl2. The observed behavior of the ac magnetic susceptibility is determined main ly by the domain dynamics, rather than by a change of the exchange interact ions below Curie temperature. (C) 2001 American Institute of Physics.