PARAMAGNETIC BEHAVIOR OF THE GD(AL1-XMX)2 COMPOUNDS FOR M = PB, SI AND GE

Results of measurements of the paramagnetic and AC susceptibility of t he pseudobinary compounds Gd(Al1-xMx)2 for M = Pb, Si and Ge are prese nted. A dramatic decrease of the Curie temperature T(C) and the parama gnetic Curie temperature theta(p) versus concentration x was observed, similar to earlier results for M = Cu, Ag, Pd, In and Sn. The effecti ve magnetic moment mu(eff) does not change too much for M = Ge, but in case of Si and Pb increases about 0.3-0.5mu(B) These effects are most ly connected with changes in the density of states at the Fermi level as a result of replacement of Al atoms by other nonmagnetic elements M within the same crystal structure.