Abstract

The effect of Fe substitution for Co at small concentrations ( x ≤ 0.1) on magnetic properties of Gd(Co 1- x Fe x ) 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(Co 1- x Fe x ) 4 compounds is discussed.

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