High-pressure behaviour of Ta3Si intermetallic compound was investigated by shock compression and static compression methods. Superconducting phase with TC = 9.3 K was found in the sample shocked to 50-61 GPa, however most of the shock recovered sample indicated the starting stable phase with the Ti3P-type structure. The new superconducting phase was not obtained from static compression up to 15 GPa and 800 °C. Bulk modulus of Ta3Si with the Ti3P-type structure was determined to be K0 = 246(4) GPa. The present results suggest that a rapid phase transformation occurred during shock compression, but most of the high-pressure phase was reverted to the stable phase in the decompression process.
ASJC Scopus subject areas
- Physics and Astronomy(all)