Particularities of Structure and Stability of Cationic-Ordered Layered Titanates

Abstract:

Thermal stability of the layered titanates NdMTiO4 and Nd2M2Ti3O10 (M=Na, K) featured with 1 or 3 perovskite layers has been investigated in thermal annealing at 780 – 1400°С. Their structure variations are monitored using thermal analysis (TGA, DTA), X-ray powder diffraction, and scanning electron microscopy. Judging from the decomposition sequence and the stable temperature range for individual phase, the structure of Nd2M2Ti3O10 with three perovskite layers is identified most stable among these layer titanates. As a whole, the K-containing phases are less stable than the Na-containing ones.

• Periodical: Solid State Phenomena (Volume 170)
• Pages: 190-193
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.170.190
• Online since: April 2011
• Authors: Irina Zvereva, Anna Sankovich, Alexander Missyul
• Keywords: Alkaline Metals, Layered Oxide, Rare Earth (RE), Thermal Stability, Titanate

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DOI: 10.1134/s1087659610020094

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