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Title: Thermal stability of the perovskite BaBiO{sub 3}

Abstract

Thermal stability of the perovskite BaBiO{sub 3} and phase relations in the BaO-BiO{sub 1.5}(BiO{sub 2.5}) system in the range of 45--55 mol%. BiO{sub 1.5} at p(O{sub 2}) = 0.21 atm have been studied by thermogravimetric analysis, differential thermal analysis, X-ray diffraction, chemical analysis, and transmission electron microscopy. It has been found that BaBiO{sub 3} loses oxygen in the temperature range between 600 and 1015 C with formation of the oxygen-deficient phases BaBiO{sub 2.88}, BaBiO{sub 2.83}, BaBiO{sub 2.75}, and BaBiO{sub 2.55}. BaBiO{sub 3} and the oxygen-deficient phases form two-phase regions involving phases of the perovskite series Ba{sub m}Bi{sub m+n}O{sub y} at the Bi-rich side and Ba{sub m+n}Bi{sub m}O{sub y} at the Ba-rich side. At 1015 C the BaBiO{sub 2.55} phase exhibits incongruent melting. At further increasing temperature the 1:1 (Ba:Bi) sample passes through a sequence of the crystallization fields of the Ba-rich phases of the compositions 5:4, 4:3, 3:2, 9:5, and 17:9, reaching the complete melting state at 1100 C.

Authors:
; ;  [1];  [2]
  1. Russian Academy of Sciences, Moscow (Russian Federation). Inst. of Solid State Physics
  2. Russian Academy of Sciences, Chernogolovka (Russian Federation). Inst. of Microelectronics Technology and High Purity Materials
Publication Date:
OSTI Identifier:
696678
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 146; Journal Issue: 2; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; PHASE STUDIES; THERMODYNAMIC PROPERTIES; BARIUM OXIDES; BISMUTH OXIDES; PHASE DIAGRAMS; THERMAL ANALYSIS; X-RAY DIFFRACTION; TRANSMISSION ELECTRON MICROSCOPY; EXPERIMENTAL DATA

Citation Formats

Klinkova, L.A., Barkovskii, N.V., Fedotov, V.K., and Nikolaichik, V.I. Thermal stability of the perovskite BaBiO{sub 3}. United States: N. p., 1999. Web. doi:10.1006/jssc.1999.8390.
Klinkova, L.A., Barkovskii, N.V., Fedotov, V.K., & Nikolaichik, V.I. Thermal stability of the perovskite BaBiO{sub 3}. United States. doi:10.1006/jssc.1999.8390.
Klinkova, L.A., Barkovskii, N.V., Fedotov, V.K., and Nikolaichik, V.I. Wed . "Thermal stability of the perovskite BaBiO{sub 3}". United States. doi:10.1006/jssc.1999.8390.
@article{osti_696678,
title = {Thermal stability of the perovskite BaBiO{sub 3}},
author = {Klinkova, L.A. and Barkovskii, N.V. and Fedotov, V.K. and Nikolaichik, V.I.},
abstractNote = {Thermal stability of the perovskite BaBiO{sub 3} and phase relations in the BaO-BiO{sub 1.5}(BiO{sub 2.5}) system in the range of 45--55 mol%. BiO{sub 1.5} at p(O{sub 2}) = 0.21 atm have been studied by thermogravimetric analysis, differential thermal analysis, X-ray diffraction, chemical analysis, and transmission electron microscopy. It has been found that BaBiO{sub 3} loses oxygen in the temperature range between 600 and 1015 C with formation of the oxygen-deficient phases BaBiO{sub 2.88}, BaBiO{sub 2.83}, BaBiO{sub 2.75}, and BaBiO{sub 2.55}. BaBiO{sub 3} and the oxygen-deficient phases form two-phase regions involving phases of the perovskite series Ba{sub m}Bi{sub m+n}O{sub y} at the Bi-rich side and Ba{sub m+n}Bi{sub m}O{sub y} at the Ba-rich side. At 1015 C the BaBiO{sub 2.55} phase exhibits incongruent melting. At further increasing temperature the 1:1 (Ba:Bi) sample passes through a sequence of the crystallization fields of the Ba-rich phases of the compositions 5:4, 4:3, 3:2, 9:5, and 17:9, reaching the complete melting state at 1100 C.},
doi = {10.1006/jssc.1999.8390},
journal = {Journal of Solid State Chemistry},
number = 2,
volume = 146,
place = {United States},
year = {1999},
month = {9}
}