Abstract :
Superconducting cubic δ-MoC0.75 has been synthesized by a high-pressure synthesis method at a pressure of 17 GPa in a Kawai-type instrument, followed by studies on the crystal structure by synchrotron X-ray diffraction. Electromagnetic measurements indicated a superconducting transition temperature Tc of 14.3 K, which is the highest Tc value experimentally confirmed among the binary metal carbides. The cubic δ-MoC0.75 prepared in this study could be considered as a weakly coupled superconductor.
