Resistance of some REMe sub 3 compounds, RE=lanthanum and lutetium, Me=tin, lead, indium, and gallium

Temperature dependence of resisitivity for monocrystalline LaSn sub 3 , LaPb sub 3 , LuGa sub 3 , LuIn sub 3 and LaIn sub 3 was analyzed in the temperature range 4.2-300K. A good overall fit of their resistivities to a generalized Bloch-Gruneisen formula was observed in these temperatures. The phonon resistivity at the lowest used temperatures fulfills power law rho sub ph approxT exp n with n equal to 3.86, 3.50, 3.22, 3.14 and 2.4 for the mentioned compounds, respectively. It was found also that n depends on free electron to real electron Fermi surface ratio.