Magnetic properties of the pseudo-binary Heusler alloy (Fe 1− xV x) 3Al

The magnetization of the D0 3 type Heusler alloy (Fe 1− x V x ) 3Al with compositions 0.18≤ x≤0.33, has been measured at temperatures from 2 to 600 K. The Curie temperature decreases to zero as the composition approaches the x=1/3 value. The effective moment calculated from both the high temperature...

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Bibliographic Details
Published in:Solid state communications 2001-12, Vol.121 (1), p.29-33
Main Authors: Nielsen, T.K., Klavin, P., Shelton, R.N.
Format: Article
Language:English
Subjects:
A. Heusler alloy
D. Ferromagnetic transition
D. Magnetic properties
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Summary:The magnetization of the D0 3 type Heusler alloy (Fe 1− x V x ) 3Al with compositions 0.18≤ x≤0.33, has been measured at temperatures from 2 to 600 K. The Curie temperature decreases to zero as the composition approaches the x=1/3 value. The effective moment calculated from both the high temperature portion of the data utilizing a Curie–Weiss fit and from the saturation moment decreases to very near zero as the x=1/3 composition is approached. This behavior is explained by the existence of magnetic clusters of Fe atoms. Fe atoms on the V site in Fe 2VAl cause the eight neighboring Fe atoms to become magnetically active thereby forming clusters of nine magnetic Fe atoms.
ISSN:0038-1098
1879-2766
DOI:10.1016/S0038-1098(01)00433-1