Dynamics of the Magnetic Susceptibility of Fe Al } ( = 70, 71) Alloys

The magnetic dynamics of Fe 71 Al 29 (x = 71) and Fe 70 Al 30 (x = 70) are analyzed. The alloys have been prepared by milling and further annealing. AC-susceptibility has been measured from 5 K to 300 K at several frequencies between 100 and 10 kHz with an alternating field of 0.1 Oe. In x = 70, add...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on magnetics 2008-11, Vol.44 (11), p.3883-3886
Main Authors: Venero, D.A., Garcia, R.R., Barquin, L.F., Apinaniz, E., Garitaonandia, J.S., Plazaola, F.
Format: Article
Language:English
Subjects:
AC-susceptibility
Annealing
Displays
Frequency measurement
Glass
intermetallics
Iron
Magnetic analysis
Magnetic field measurement
magnetic relaxation
Magnetic susceptibility
Magnetism
Milling
spin-glass
Temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The magnetic dynamics of Fe 71 Al 29 (x = 71) and Fe 70 Al 30 (x = 70) are analyzed. The alloys have been prepared by milling and further annealing. AC-susceptibility has been measured from 5 K to 300 K at several frequencies between 100 and 10 kHz with an alternating field of 0.1 Oe. In x = 70, additional susceptibility data fixing the frequency to 500 Hz and varying the field between 0.1 les h les 10 Oe were obtained. The results display real components similar to those reported in DC-magnetization, with two transitions in x = 70 and a single transition in x = 71. The complex component is much more clear with a well-defined peak for the low temperature transition ascribed to a spin freezing. The frequency variation gives 0.078(5) in x = 70 and critical zv = 7.2(5) and 0.066(9) and zv = 9.8(5) for x = 71, related to a cluster glass behavior. However the parameter beta ap 1 for both alloys which is high in the framework of a conventional slowing down. This is related to the clustered nature of the magnetic structure lacking of defined interfaces.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2008.2001348