Heat of dissociation of non-stoichiometric calcium uranate

The equilibrium oxygen pressure above nonstoichiometric CaUO/sub x/ (4> X> 3.5) was measured over various ranges of temperature and composition, and thermodynamic quantities for the solid--gas equilibrium were derived. A comparison was made between the experimental results and theoretical calculations for a nonstoichiometric oxide with anion vacancies. (auth) (auth)