Non-Fermi-liquid behavior and magnetic order in the U1-xYxPd2Al3 system

Measurements of the low-temperature electrical resistivity rho, specific heat C, and magnetic susceptibility chi of the U1-xYxPd2Al3 system reveal non-Fermi-liquid behavior for x greater than or equal to 0.7. For x= 0.8, the low-temperature physical properties can be expressed as rho(T)= rho(0)[1- a(T/T-0)], C(T)/T= - (R/bT(0))ln(T/b'T-0) or T-1+lambda (lambda=0.82), and chi(T)= chi(0)[1 - c(T/T-0)(1/2)] where (-)a, b, b', and c are positive constants and T(0)approximate to 30 K. In addition, we observed concentration x-dependent features in the specific heat and magnetic susceptibility that appears to be due to magnetic order and extrapolate linearly to T=0 K at x approximate to 0.7. [S0163-1829(98)06147-5].