Synthesis and thermal stability of a new barium polytitanate compound, Ba1.054Ti0.946O2.946

D. S. Filimonov, Zi-kui Liu, Clive A. Randall

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A new barium polytitanate Ba1.054Ti0.946O2.946 was synthesized by a citrate chemical route. The X-ray powder pattern of this compound was indexed to a hexagonal system, with space group P63/mmc and lattice parameters a = 5.722(4) and c = 13.996(8) Å. Prolonged annealing of the Ba1.054Ti0.946O2.946 in air at temperatures above 1150 °C leads to a peritectoid decomposition reaction yielding Ba2TiO4 and cubic-BaTiO3, consistent with the known phase diagram. A thermal stability study of this compound demonstrates it to be a stable phase under ambient conditions and metastable under low oxygen partial pressures.

Original languageEnglish (US)
Pages (from-to)467-473
Number of pages7
JournalMaterials Research Bulletin
Volume37
Issue number3
DOIs
StatePublished - Mar 1 2002

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Barium Compounds
Barium compounds
barium compounds
citrates
Barium
Citric Acid
Partial pressure
Powders
Lattice constants
Phase diagrams
barium
partial pressure
lattice parameters
Thermodynamic stability
thermal stability
routes
phase diagrams
Annealing
Oxygen
Decomposition

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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abstract = "A new barium polytitanate Ba1.054Ti0.946O2.946 was synthesized by a citrate chemical route. The X-ray powder pattern of this compound was indexed to a hexagonal system, with space group P63/mmc and lattice parameters a = 5.722(4) and c = 13.996(8) {\AA}. Prolonged annealing of the Ba1.054Ti0.946O2.946 in air at temperatures above 1150 °C leads to a peritectoid decomposition reaction yielding Ba2TiO4 and cubic-BaTiO3, consistent with the known phase diagram. A thermal stability study of this compound demonstrates it to be a stable phase under ambient conditions and metastable under low oxygen partial pressures.",
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Synthesis and thermal stability of a new barium polytitanate compound, Ba1.054Ti0.946O2.946 . / Filimonov, D. S.; Liu, Zi-kui; Randall, Clive A.

In: Materials Research Bulletin, Vol. 37, No. 3, 01.03.2002, p. 467-473.

Research output: Contribution to journalArticle

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AB - A new barium polytitanate Ba1.054Ti0.946O2.946 was synthesized by a citrate chemical route. The X-ray powder pattern of this compound was indexed to a hexagonal system, with space group P63/mmc and lattice parameters a = 5.722(4) and c = 13.996(8) Å. Prolonged annealing of the Ba1.054Ti0.946O2.946 in air at temperatures above 1150 °C leads to a peritectoid decomposition reaction yielding Ba2TiO4 and cubic-BaTiO3, consistent with the known phase diagram. A thermal stability study of this compound demonstrates it to be a stable phase under ambient conditions and metastable under low oxygen partial pressures.

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