Recent Experiments on Spin Polarized Liquid 3He

The importance of spin fluctuations on the physical properties of liquid3He can be probed by studying the polarization dependence of its magnetic susceptibility and viscosity. We discuss the present state of two such experiments. Using the rapid melting technique, to strongly polarize liquid3He, we have measured the viscosity enhancement induced by the polarization up to unprecedented large polarizations at a low temperature (80 mK). At a polarization of 60 %, the enhancement reaches a factor 2.5, comparable to that of the inverse susceptibility at the same polarization.