Phases and phase transitions of KPF6

Enthalten in
Ferroelectrics 
Volume
203
Issue
1/4
Start Page
211
End Page
219
Citation
Ferroelectrics 203 (1/4): 211-219 (1997)
Publisher DOI
10.1080/00150199708012847
Scopus ID
2-s2.0-0031324873
Publisher
Taylor & Francis
Potassium hexafluorophosphate KPF6 has been investigated by X-ray powder diffraction, calorimetry and Brillouin spectroscopy. With decreasing temperature, the crystal shows a sequence of phases: NaCl-type cubic-monoclinic-monoclinic with two-phase coexistence regions in between. In the cubic phase the elastic constants have been determined. c44 and c12 show a slight softening.
Schlagworte
Brilloum scattering
Calorimetry
Elastic constants
Orientational ordering
Structural phase transitions
X-ray diffraction
DDC Class
530: Physik
More Funding Information
This work was partially supported by the Deutsche Forschungsgemein-schaft (Project Kn 234/8).