The effect of Fe substitution for Co at small concentrations (x ?? 0.1) on magnetic properties of
Gd(Co1-xFex)4B compounds has been studied. Upon substitution, the compensation temperature is nearly
constant, the Curie temperature changes slightly whereas the magnetic anisotropy is modified significantly.
The Fe-concentration dependence of the magnetic anisotropy has been analysed by means of the individual
site anisotropy (ISA) model. The magnetic phase diagram of the Gd(Co1-xFex)4 compounds is discussed. ??
1995.