Pressure and magnetic field effects in heavy-fermion UCu$_{3.5}$Al$_{1.5}$

UCu$_{3.5}$Al$_{1.5}$ is a heavy-fermion compound which crystallizes in the hexagonal CaCu$_{5}$ structure, and it was reported to exhibit non-Fermi-liquid scaling at low temperatures. We report on the measurements of the electrical resistivity and magnetoresistance as a function of temperature (2-150 K), pressure (0-10kbar) and applied magnetic field (0-18T). The results provide evidence that, for UCu$_{3.5}$Al$_{1.5}$, application of pressure and/or magnetic field tends to suppress non-Fermi-liquid scaling and a tendency toward long-range magnetic correlations is observed for temperatures below 20 K, although there is no clear evidence of long-range order in the available pressure and field range.