Title :
Magnetic properties of ball milled Fe-40 Al at.% alloys
Author :
Amils, X. ; Nogues, J. ; Surinach, S. ; Baro, M.D. ; Munoz, J.S.
Author_Institution :
Dept. de Fisica, Univ. Autonoma de Barcelona, Spain
fDate :
7/1/1998 12:00:00 AM
Abstract :
A direct correlation between the lattice parameter and the saturation magnetization, during the disordering (ball milling) and posterior reordering (annealing) processes, has been found in Fe-40 Al at.% compounds. These results indicate that the paramagnetic-ferromagnetic-paramagnetic transitions induced by ball milling and subsequent annealing could be related to the changes in volume, and not only to nearest neighbors effects as is commonly assumed. Moreover, these alloys have been found to become spin glass at low temperatures, independently of their structural state (ordered or disordered)
Keywords :
aluminium alloys; annealing; ferromagnetic materials; ferromagnetic-paramagnetic transitions; iron alloys; lattice constants; magnetisation; powder metallurgy; spin glasses; FeAl; annealing; ball milled Fe-Al alloys; ball milling; disordering; lattice parameter; magnetic properties; paramagnetic-ferromagnetic-paramagnetic transition; posterior reordering; saturation magnetization; spin glass; Annealing; Ball milling; Magnetic materials; Magnetic properties; Magnetosphere; Paramagnetic materials; Powders; Saturation magnetization; Temperature; X-ray scattering;
Journal_Title :
Magnetics, IEEE Transactions on
