Changes in the Crystal Structure and Electrophysical Properties of Polycrystalline Indium Oxide When Heated in Air

Fabrication, microstructure and mid-infrared luminescence of Er:(Sc Y1-)2O3 transparent ceramics

“…For instance, Bmodification of Y2O3 was previously observed under a pressure of 2.1 GPa at 1273 K [35]. Such a high pressure probably appears owing to electrostatic forces near oxygen vacancies which are certainly present in the monoclinic lattice [36]. It follows that the stability of the monoclinic phase under ambient conditions is determined by oxygen deficiency and a necessary condition for the B → C (monoclinic to cubic) phase transformation is the saturation of nanoparticles with oxygen to a content close to the stoichiometric composition.…”