THERMOCHEMICAL AND THERMODYNAMICAL PROPERTIES OF 14 COMPLEX OXIDES INTHE SRO-BI2O3 SYSTEM

The known data for the phases Sr6Bi2O9, Sr3Bi2O6, Sr2Bi2O5, Sr18Bi22O5 1, Sr6Bi14O27, SrBi4O7, Sr2Bi6O11, SrBi2O4, Sr8Bi10O23, Sr8Bi2O11, Sr5 Bi6O14, Sr6Bi2O11, Sr6Bi4O15 and Sr24Bi14O52 have been revised and cor rected, unknown data have been estimated. The values of Delta H-298(0) , S-298(0), H-297(0)-H-0(0), the T and Delta H values for the phase tr ansformations, C-p(T) for the crystalline state, C-p at T > T-ph.tr, a nd also the polynomial approximating a reduced Gibbs are presented.