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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:
6105390
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 146:2; Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BARIUM OXIDES; BISMUTH OXIDES; EXPERIMENTAL DATA; PHASE DIAGRAMS; PHASE STUDIES; THERMAL ANALYSIS; THERMODYNAMIC PROPERTIES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; BISMUTH COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; DATA; DIAGRAMS; DIFFRACTION; ELECTRON MICROSCOPY; INFORMATION; MICROSCOPY; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SCATTERING; 360202* - Ceramics, Cermets, & Refractories- Structure & Phase Studies; 360204 - Ceramics, Cermets, & Refractories- Physical Properties

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_6105390,
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},
issn = {0022-4596},
number = ,
volume = 146:2,
place = {United States},
year = {1999},
month = {9}
}