A STUDY OF THE THERMAL DECOMPOSITION OF LAYERED PEROVSKITE-LIKE OXIDES ANdTiO
4 AND A
2Nd
2Ti
3O
10 (A = Na, K)
A.M. Sankovich, I.A. Zvereva
St.Peterburg State University, Russia
Keywords: перовскитоподобные слоистые титанаты, термическая стабильность, порошковая рентгеновская дифракция, perovskite-like layered titanates, thermal stability, powder X-ray diffraction
Abstract
The thermal stability of cation-ordered perovskite-like layered titanates ANdTiO
4 and A
2Nd
2Ti
3O
10 (A = Na, K) is studied in the temperature range of 900-1400°C. The structural chemical mechanism of their thermal decomposition is established. A comparative analysis of the thermal stability of compounds with different thicknesses of the perovskite layer and different nature of the alkali cation is performed. The observed thermal behavior is explained from crystal chemical standpoints.
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