Nonstoichiometry of the perovskite-type solid solution La0.9Ca0.1Cr1-yAlyO3-δ

Junichiro Mizusaki, Mamoru Hasegawa, Keiji Yashiro, Hiroshige Matsumoto, Tatsuya Kawada

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Nonstoichiometry of the perovskite-type solid solutions La0.9Ca0.1Cr1-yAlyO3-δ was studied by high-temperature gravimetry under controlled P(O2) atmospheres of 1-10- 23 bar at 1073-1273 K. The observed data were described by a regular solution-like model for the randomly distributed defects of VÖ{radical dot}{radical dot}, CrCr.{radical dot}, CaLa,, and AlCr X. With the increase in y, VÖ{radical dot}{radical dot} formation becomes much easier. For y > 0.8, some fraction of CaLa, becomes surrounded only by AlCr X and VÖ{radical dot}{radical dot} remains around such CaLa, up to high P(O2) to reduce the maximum oxygen content below 3.000.

Original languageEnglish
Pages (from-to)1925-1928
Number of pages4
JournalSolid State Ionics
Volume177
Issue number19-25 SPEC. ISS.
DOIs
Publication statusPublished - Oct 15 2006
Externally publishedYes

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Gravimetric analysis
Perovskite
Solid solutions
solid solutions
Oxygen
Defects
Temperature
perovskite
gravimetry
atmospheres

All Science Journal Classification (ASJC) codes

  • Electrochemistry
  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Materials Chemistry
  • Condensed Matter Physics

Cite this

Nonstoichiometry of the perovskite-type solid solution La0.9Ca0.1Cr1-yAlyO3-δ . / Mizusaki, Junichiro; Hasegawa, Mamoru; Yashiro, Keiji; Matsumoto, Hiroshige; Kawada, Tatsuya.

In: Solid State Ionics, Vol. 177, No. 19-25 SPEC. ISS., 15.10.2006, p. 1925-1928.

Research output: Contribution to journalArticle

Mizusaki, J, Hasegawa, M, Yashiro, K, Matsumoto, H & Kawada, T 2006, 'Nonstoichiometry of the perovskite-type solid solution La0.9Ca0.1Cr1-yAlyO3-δ ', Solid State Ionics, vol. 177, no. 19-25 SPEC. ISS., pp. 1925-1928. https://doi.org/10.1016/j.ssi.2006.06.001
Mizusaki, Junichiro ; Hasegawa, Mamoru ; Yashiro, Keiji ; Matsumoto, Hiroshige ; Kawada, Tatsuya. / Nonstoichiometry of the perovskite-type solid solution La0.9Ca0.1Cr1-yAlyO3-δ . In: Solid State Ionics. 2006 ; Vol. 177, No. 19-25 SPEC. ISS. pp. 1925-1928.
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