Possible observation of a compensated spin state in the actinide intermetallic compounds UxTh1-xPd3

An EPR measurement of Gd in UxTh1-xPd3, 0<x<1, shows anomalous behavior as a function of temperature. These results, as well as previous anomalous susceptibility measurements of the same compounds, are taken to indicate the existence of a partially compensated spin state on the uranium in UxTh1-xPd3. This work indicates the possibility of the existence of the Kondo effect in concentrated spin systems. It shows, also, that the utilization of the EPR technique is a powerful method for investigating the Kondo effect.