High Pressure Synthesis and properties of (Ca,Pr)Fe$_{2}$As$_{2}$*

Despite impressively high superconducting transition temperatures approaching 50 K, superconductivity in rare earth-doped CaFe$_{2}$As$_{2}$ appears to only involve a small volume fraction as determined by shielding fraction. In addition, the amount of Pr that can be doped into the system via ambient pressure flux synthesis is limited to \textless 15{\%}, due to a width of formation limitation. We report a study using high-pressure flux growth to substitute higher levels of Pr approaching 40{\%} concentration. The superconducting properties of the resultant crystals are presented, including chemical composition, resistivity, and magnetization measurements. The final result is a complete phase diagram for the Pr-doped CaFe$_{2}$As$_{2}$ system.