The magnetic phases of Ce(Cu1-xNix)2Ge2

The magnetic phase diagram of the system Ce(Cu 1-x Ni x ) 2 Ge 2 with 0≤x≤0.9 is studied by muon spin relaxation (μSR). Static magnetic order has been found up to x = 0.5 whereas for x = 0.8 and 0.9, no magnetic relaxation has been detected for temperatures down to 20 mK.