Вид документа : Статья из журнала Шифр издания : 54/S 89 Автор(ы) : Shkerin S. N., Bronin D. I., Kovyazina S. A., Gorelov V. P., Kuzmin A. V., Martemyanova Z. S., Beresnev S. M. Заглавие : Structure and phase transitions of (La, Sr)(Ga, Mg)O3-alpha solid electrolyte Место публикации : Solid State Ionics. - 2004. - V. 171, N 1-2. - С. 129-134. - ISSN 0167-2738. - ISSN 0167-2738 Примечания : Bibliogr.: p. 133-134 (35 ref.) ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Electrical conductivity, Raman scattering spectra, and thermal expansion of the solid solution based on lanthanum gallate having the formula La0.88Sr0.12Ga0.82Mg0.18O2.85 (LSGM12-18) were studied as a function of temperature. X-ray diffraction analysis of the samples at room temperature was performed. A dilatometric examination demonstrated that phase transitions of the second order took place at 775 plus-minus 10 and 880 plus-minus 20 K. The transition at 880 K was confirmed both by Raman scattering spectra and by a change in the activation energy of the electrical conductivity. This phase transition is probably due to a change of the oxygen sublattice symmetry Доп.точки доступа: Shkerin, S. N.; Bronin, D. I.; Kovyazina, S. A.; Gorelov, V. P.; Kuzmin, A. V.; Martemyanova, Z. S.; Beresnev, S. M.