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This article is cited in 3 scientific papers (total in 3 papers)
Phase transitions
Formation of new structural states in compressed BaTiO$_{3}$ nanopowders
I. M. Shmyt'ko, D. D. Frolov, A. S. Aronin, G. R. Ganeeva, V. V. Kedrov Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region
Abstract:
The structural changes in BaTiO$_{3}$ nanocrystal powder and tablets have been probed via X-ray diffraction, scanning electron and transmission microscopy, and differential calorimetry after successive hightemperature annealing in air. It is shown that, beginning with the annealing temperature of 1200$^\circ$C, significant amount of the Ba$_{2}$TiO$_{4}$ phase forms in the tablets together with the BaTiO$_{3}$ phase. This phase is equilibrium one; it practically vanishes when the annealing temperature decreases to 700–600$^\circ$C; and this phase practically restored to the initial state when the annealing temperature is again increased to 1200$^\circ$C. Annealing the powders causes no formation of new phases, but an increase in their crystallite sizes. A probable reason of the emergence of Ba$_{2}$TiO$_{4}$ phase in tablets and its absence in free powder is discussed, as well.
Received: 06.06.2016 Revised: 07.12.2016
Citation:
I. M. Shmyt'ko, D. D. Frolov, A. S. Aronin, G. R. Ganeeva, V. V. Kedrov, “Formation of new structural states in compressed BaTiO$_{3}$ nanopowders”, Fizika Tverdogo Tela, 59:6 (2017), 1173–1182; Phys. Solid State, 59:6 (2017), 1196–1205
Linking options:
https://www.mathnet.ru/eng/ftt9557 https://www.mathnet.ru/eng/ftt/v59/i6/p1173
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