Interplay between non-magnetic dilution and pressure effects in magnetism of UCoAl

Abstract Effects of external hydrostatic pressure and Y(Lu) substitutions for U on magnetism in U 1− x Y(Lu) x CoAl compounds were studied. Y and Lu doping of UCoAl leads to a gradual development of ferromagnetism in a limited concentration range. Reentrant metamagnetism of the UcoAl type is observed in the ferromagnetic U 1− x Y(Lu) x CoAl compounds after application of a sufficient external pressure.