  We report experimental studies of the temperature and magnetic field
dependence of resistivity and dc magnetic susceptibility and the temperature
dependence of zero field heat capacity in a Ti$_{0.6}$V$_{0.4}$ alloy. The
temperature dependence of the normal state dc magnetic susceptibility in this
Ti$_{0.6}$V$_{0.4}$ alloy shows T$^2$lnT behavior. The temperature dependence
of resistivity follows a T$^2$ behaviour in the range 20-50 K. On the other
hand, a term $T^3$ lnT is needed in the expression containing the electronic
and lattice heat capacities to explain the temperature dependence of heat
capacity at temperatures where $T^2$ dependence of resistivity is observed.
Such temperature dependence of dc magnetic susceptibility, resistivity and heat
capacity are indications of the presence of spin-fluctuations in the system.
Further experimental evidence for the spin fluctuations is obtained in the form
of a negative value of T$^5$ term in the temperature dependence of resistivity.
The influence of spin-fluctuations on the superconducting properties of
Ti$_{0.6}$V$_{0.4}$ is discussed in detail. We show from our analysis of
resistivity and the susceptibility in normal and superconducting states that
the spin fluctuations present in Ti$_{0.6}$V$_{0.4}$ alloy are itinerant in
nature. There is some evidence of the existence of preformed Cooper-pairs in
the temperature range well above the superconducting transition temperature.
Our study indicates that the interesting correlations between spin-fluctuations
and superconductivity may actually be quite widespread amongst the
superconducting materials, and not necessarily be confined only to certain
classes of exotic compounds.

Superconductivity