High-pressure Raman spectroscopy of Re3N crystals

• Well-crystallized plate-like Re3N crystals were synthesized through HPSSM reaction in LVP at 14 GPa and 1973 K.
• The vibrational properties of Re3N crystals were studied by high-pressure Raman spectroscopy in DAC up to 20 GPa.
• The mode-Grüneisen parameters for Raman modes of Re3N were determined experimentally for the first time.

Well-crystallized plate-like Re3N crystals were synthesized through a high-pressure solid-state metathesis (HPSSM) reaction in large volume press (LVP) at 14 GPa and 1973 K. The vibrational properties of Re3N crystals were studied by high-pressure Raman spectroscopy in diamond anvil cell (DAC) up to 20 GPa. The mode-Grüneisen parameters for Raman modes of Re3N were determined experimentally, which were found substantially being larger than previously calculated values.