FIG. 9: Phase Diagram of a 115 compound and alloys at various pressures shown. Figure is repro duced from Ref.(67). perconductivity in heavy-fermions as in liquid He 3 for two reasons: superconductivity is near qcp’s, where such renormalizations are singular and the qcp are at large q -vectors, where Landau parameters are not defined. However, the energy scales are set by the renormaliza- tions given by the Landau parameters above and are therefore essential to bear in mind. They are ideal systems to study magnetic fluctuations by inelastic neutron scattering. But only in a few of them are such results available near quantum-criticality because for the technique to be fully effective requires large single-crystals. From the study of the ther- modynamic and transport properties (such as residual resistivity, temperature dependence of resistivity, ultrasonic attenuation, thermal conductivity and nuclear relaxation rates) in the fermi-liquid regime, the leading renormalizations in heavy fermions were found to be 39