Structure and phase transitions in Cu₂P₂O₇

Abstract

X-ray diffraction studies of the temperature variation of the Cu₂P₂O₇ crystal structure were performed in the vicinity of the transition from the α-phase (C2/c space group) to the β-phase (C2/m space group). These results as well as those of Raman spectroscopy studies and temperature variation of the electric capacitance point to the existence of an intermediate phase in the temperature range 347–363 K.

Keywords:

• Copper pyrophosphate
• Phase transition
• XRD studies
• Raman spectra

Acknowledgement

The article was supported by Grant No. 3 T08A 079 27 from the Committee of Scientific Researches in Poland.