Chemical doping and pressure effects on the noncentrosymmetric superconductors ZrRe$_{6}$ and BiPd*

Polycrystalline samples of ZrRe$_{6}$ doped with Ti, W and Os and BiPd doped with Te and Ni were made using arc melting and RF- induction furnaces. Variation of the superconducting transition temperature with different types of doping was observed. Small suppression of T$_{c}$ was observed for both hole and electron doping in ZrRe$_{6}$ samples. Suppression in T$_{c}$ was also observed for BiPd. The effect of hydrostatic pressure on T$_{c}$ was also determined for both compounds. Effect of Re depreciation on T$_{c}$ for ZrRe$_{6}$ were observed by synthesizing samples, ZrRe$_{5.95 \sim 5.85}$. In addition, small diameter wires (0.0005" $\sim$ 0.004") of BiPd were synthesized for critical current density measurements. The critical temperature of the wires was found to be slightly higher ($\sim$4.07 K) than that reported for bulk samples ($\sim$3.78 K).