Pressure Dependence of the Knight Shift in V Metal

The pressure dependence of the Knight shift $K$ in V metal is measured. The explicit temperature dependence of $K$ is derived from a previously obtained $K\left(T\right)\mathrm{}$ at constant pressure and the present pressure-dependence data. Several methods of estimating the volume dependence of the $d$-band susceptibility ${\chi }_d$ are discussed. Using the estimated value for $\frac{d\ln {\chi }_d}{d\ln v}$, the volume dependence of the orbital Knight shift $K_0$ was derived. It is concluded that the volume dependence of $〈r^{-3\mathrm{}}〉$ plays an important role for the volume dependence of $K_0$.