caa a22 4500 467926743 CHVBK 20180406152931.0 cr unu---uuuuu 170328e20061001xx s 000 0 eng 10.1134/S0020168506100165 doi (NATIONALLICENCE)springer-10.1134/S0020168506100165 Vorobiov Yu Institute of Solid-State Chemistry, Ural Division, Russian Academy of Sciences, Pervomaiskaya ul. 91, 620219, Yekaterinburg, Russia aut Thermodynamic analysis and crystal-chemical modeling of the defect structure of calcium iron garnets [Elektronische Daten] [Yu. Vorobiov] This paper presents detailed analysis of the phase equilibria and thermodynamic stability of CaO, Fe2O3, Gd2O3, Nd2O3, Pr2O3, ZrO2, NiO, and ThO2, and detect formation during high-temperature synthesis of gadolinium (yttrium) calcium and zirconium calcium iron garnets doped with praseodymium, neodymium, nickel, cerium, thorium, and other oxides. The origin of point defects in each garnet is discussed. Crystal-chemical modeling indicates that all calcium-containing garnets are nonstoichiometric, but differ in the origin of non-stoichiometry, δ. The values of δ are shown to correlate with the activation energy for oxygen-ion conduction determined by emf measurements on solid electrolytes. The mechanisms of formation of different garnets from binary oxides are compared. Pleiades Publishing, Inc., 2006 Inorganic Materials Nauka/Interperiodica 42/10(2006-10-01), 1138-1146 0020-1685 42:10<1138 2006 42 10789 https://doi.org/10.1134/S0020168506100165 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0020168506100165 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Vorobiov Yu Institute of Solid-State Chemistry, Ural Division, Russian Academy of Sciences, Pervomaiskaya ul. 91, 620219, Yekaterinburg, Russia aut NATIONALLICENCE 773 0- Inorganic Materials Nauka/Interperiodica 42/10(2006-10-01), 1138-1146 0020-1685 42:10<1138 2006 42 10789 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer