KONDO SCREENING OF URANIUM IN THE DILUTE SYSTEM (UXLA1-X)RU2SI2

Kondo screening is found in dilute uranium compounds (UxLa1-x)Ru2Si2 ( x less than or equal to 0.15). At high temperatures, the susceptibilit y with a large magnetic anisotropy is explained by the crystal field m odel with the non-Kramers doublet ground state. On the other hand, the low-temperature behaviors of the high-field magnetization, susceptibi lity, and specific heat are well described by the Kondo model. The gam ma value and Schottky anomaly are nearly the same as those observed fo r URu2Si2. These results suggest that single-site Kondo screening is i mportant for understanding the Fermi liquid state in URu2Si2.