NEW OXYFLUORIDES CONTAINING INDIUM WITH POTENTIAL FERROELASTIC PROPERTIES.

Article abstract of DOI:10.1016/0022-4596(88)90165-X

X-ray diffraction, micro-DTA, and microcalorimetric measurements have been performed on compounds of the InF//3-TiOF//2, InF//3-MO//2F (M equals Nb, Ta), and InF//3-WO//3 systems. Extended domains of solid solutions exhibiting ReO//3-related structures have been detected. Phase transitions of a ferroelastic-prototype nature have been pointed out. In the latter system several domains have been identified, connected with the various allotropic forms of WO//3. The variation of the transition temperatures with composition has been determined. They decrease when indium is substituted to tungsten simultaneously with fluorine to oxygen.