UCu4Pd: A disordered antiferromagnetic compound

We present a systematic study of the specific heat and ac- as well as dc-su sceptibility in various fields and frequencies down to 60 mK in the non-Fer mi liquid system UCu5 - xPdx. The results show above 200 mK, it orders anti ferromagnetically below T-N = 19 mK while simultaneously showing evidence f or spin glass behavior possibly due to random occupation of the 16e site wi th palladium. For UCu3.5Pd1.5 our measurements reveal spin glass behavior w ith an anomalously high shift frequency of the freezing temperature (T-f) o f the ac-susceptibility at the beginning of the spin glass phase.