Magnetic field study of Ce0.8La0.2Al3

A partial substitution of La for Ce in CeAl3 leads to large anomalies in th e low temperature specific heat, presumably of magnetic origin, and results in a strong reduction of gamma. Magnetic fields up to 14 T have little eff ect on the temperature position of the anomaly in Ce0.8La0.2Al3 but attenua te its magnitude. Specific heats of Ce0.8La0.2Al3 and CeAl3 approach each o ther in large fields of order 14 T. Magnetic fields increase gamma of Ce0.8 La0.2Al3. (C) 2000 American Institute of Physics. [S0021-8979(00)64808-9].