  We present first principles charge- and spin-selfconsistent electronic
structure computations on the Heusler-type disordered alloys Fe$_{3-x}$V$_{x}$X
for three different metalloids X=(Si, Ga and Al). In these calculations we use
the methodology based on the Korringa-Kohn- Rostoker formalism and the
coherent-potential approximation (KKR-CPA), generalized to treat disorder in
multi-component complex alloys.
