Pressure Effects on the Vanadium Oxides V$_{6}$O$_{11}$, V$_{7}$O$_{13}$, and V$_{8}$O$_{15}$

Members of the V$_{N}$O$_{N-1}$ Magneli Series (3~$<$~N~$<$~9) exhibit metal to insulator transitions (MIT) as well as antiferromagnetic (AFM) transitions at ambient pressure, with the exception of V$_{7}$O$_{13}$ which remains metallic to lowest measured temperatures. In this talk we present pressure and temperature dependent measurements of electrical resistivity for V$_{6}$O$_{11}$, V$_{7}$O$_{13}$ and V$_{8}$O$_{15}$ samples. For V$_{6}$O11 and V$_{8}$O$_{15}$ MIT can be suppressed by 4 and 1.3~GPa respectively. For V$_{7}$O$_{13}$ and V$_{8}$O$_{15}$ T$_{SDW}$ can be suppressed by 3.5~GPa. Composite phase diagrams will be presented and low temperature data, focusing on the possibility of quantum criticality will be discussed.