1998/09/14 by S. Hull, P. Berastegui · 2 citations
Chemistry · Materials Science · #Inorganic Fluorides and Related Compounds #Inorganic Chemistry and Materials #Iron-based superconductors research #Crystallography #Structural stability #Hexagonal crystal system #Neutron diffraction #High pressure #Phase transition #Materials science #Diffraction #Powder diffraction #Phase (matter) #Volume (thermodynamics) #Thermodynamics #Chemistry #Crystal structure #Physics #Organic chemistry #Optics
paper · pdf · doi:10.1088/0953-8984/10/36/005
openalex publication_date 1998/09/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The high-pressure structural behaviour of AgF has been studied by the powder neutron diffraction technique. The material undergoes a pressure-induced transition at 2.70(2) GPa from the rocksalt structure to the CsCl-type arrangement with a volume change of . On decreasing pressure, the reverse transition occurs via an intermediate phase possessing the hexagonal anti-NiAs structure. A plausible structural model to explain this observation is provided, together with a discussion of the relative stability of the (anti-) NiAs arrangement as a high-pressure polymorph in binary MX compounds.