We report on structure investigation and magnetization study of UN1-xRhxAl
solid solutions between an antiferromagnet UNiAl and a ferromagnet URhAl. T
he ZrNiAl-type hexagonal crystal structure of the parent compounds is prese
rved in the whole concentration range. Magnetization was measured as a func
tion of magnetic field, temperature and external hydrostatic pressure. The
observed complex evolution of magnetic phenomena with Rh substitution for N
i is discussed in terms of effects of the varying Sf-ligand hybridization.
A tentative magnetic phase diagram is proposed. (C) 1999 Elsevier Science S
.A. All rights reserved.