By Topic

A Magnetic and MÖssbauer Spectral Study of the {\rm Lu}{({\rm Al}_{1-{\rm x}}{\rm Fe}_{\rm x})}_{2} Compounds

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Piquer, Cristina ; Inst. de Cienc. de Mater. de Aragon, CSIC-Univ. de Zaragoza, Zaragoza ; Laguna-Marco, M.A. ; Boada, R. ; Plazaola, F.
more authors

We present here a magnetic and 57Fe Mossbauer spectral study of the Lu(Al1-xFex)2 compounds (x=0.50, 0.75, and 1). At relatively high temperatures (TH ~ 300 K for x=0.75 , and TH ~ 70 K for x=0.50) a peak is observed in both zero field cooled magnetization, M(T), and low field ac susceptibility versus temperature, chiac(T), curves. Irreversible phenomena occur at temperatures below the maxima in M(T), and a clear dependence with the exciting frequency is observed in the chiac>(T) curves. Similar behavior is observed at lower temperatures (TL ~ 45 K for x=0.75, and TL ~ 10 K for x=0.50); however, the low temperature peak in chiac(T) is almost frequency independent. The combined analysis of magnetization data and 57Fe Mossbauer spectroscopy suggests that the high temperature process corresponds to the apparition of short-range correlations between the magnetic moments, which lead to the formation of magnetic clusters, whereas the low temperature process corresponds to a freezing of the iron magnetic moments.

Published in:

Magnetics, IEEE Transactions on  (Volume:44 ,  Issue: 11 )