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

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

doi:10.1016/j.ssi.2006.06.001

Nonstoichiometry of the perovskite-type solid solution La_0.9Ca_0.1Cr_1-yAl_yO_3-δ

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

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Nonstoichiometry of the perovskite-type solid solutions La_0.9Ca_0.1Cr_1-yAl_yO_3-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 V_Ö{radical dot}{radical dot}, Cr_Cr.{radical dot}, Ca_La,, and Al_Cr^X. With the increase in y, V_Ö{radical dot}{radical dot} formation becomes much easier. For y > 0.8, some fraction of Ca_La, becomes surrounded only by Al_Cr^X and V_Ö{radical dot}{radical dot} remains around such Ca_La, up to high P(O₂) to reduce the maximum oxygen content below 3.000.

Original language	English
Pages (from-to)	1925-1928
Number of pages	4
Journal	Solid State Ionics
Volume	177
Issue number	19-25 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.ssi.2006.06.001
Publication status	Published - Oct 15 2006
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Chemistry
General Materials Science
Condensed Matter Physics

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10.1016/j.ssi.2006.06.001

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@article{8006cd976371422fa7d38c041a2b214d,

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

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 V{\"O}\{radical dot\}\{radical dot\}, CrCr.\{radical dot\}, CaLa,, and AlCrX. With the increase in y, V{\"O}\{radical dot\}\{radical dot\} formation becomes much easier. For y > 0.8, some fraction of CaLa, becomes surrounded only by AlCrX and V{\"O}\{radical dot\}\{radical dot\} remains around such CaLa, up to high P(O2) to reduce the maximum oxygen content below 3.000.",

author = "Junichiro Mizusaki and Mamoru Hasegawa and Keiji Yashiro and Hiroshige Matsumoto and Tatsuya Kawada",

note = "Funding Information: The authors express their thanks to Dr. Mori of Central Research Institute of Electric Power Industry for providing the sample La 0.9 Ca 0.1 Cr 0.9 Al 0.1 O 3−δ . This study was the Grant-in-Aid for Scientific Research (A), 13305046 by the Ministry of Education, Science, Sports and Culture.",

year = "2006",

month = oct,

day = "15",

doi = "10.1016/j.ssi.2006.06.001",

language = "English",

volume = "177",

pages = "1925--1928",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier B.V.",

number = "19-25 SPEC. ISS.",

}

TY - JOUR

T1 - Nonstoichiometry of the perovskite-type solid solution La0.9Ca0.1Cr1-yAlyO3-δ

AU - Mizusaki, Junichiro

AU - Hasegawa, Mamoru

AU - Yashiro, Keiji

AU - Matsumoto, Hiroshige

AU - Kawada, Tatsuya

N1 - Funding Information: The authors express their thanks to Dr. Mori of Central Research Institute of Electric Power Industry for providing the sample La 0.9 Ca 0.1 Cr 0.9 Al 0.1 O 3−δ . This study was the Grant-in-Aid for Scientific Research (A), 13305046 by the Ministry of Education, Science, Sports and Culture.

PY - 2006/10/15

Y1 - 2006/10/15

N2 - 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 AlCrX. 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 AlCrX and VÖ{radical dot}{radical dot} remains around such CaLa, up to high P(O2) to reduce the maximum oxygen content below 3.000.

AB - 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 AlCrX. 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 AlCrX and VÖ{radical dot}{radical dot} remains around such CaLa, up to high P(O2) to reduce the maximum oxygen content below 3.000.

UR - https://www.scopus.com/pages/publications/33749999806

UR - https://www.scopus.com/pages/publications/33749999806#tab=citedBy

U2 - 10.1016/j.ssi.2006.06.001

DO - 10.1016/j.ssi.2006.06.001

M3 - Article

AN - SCOPUS:33749999806

SN - 0167-2738

VL - 177

SP - 1925

EP - 1928

JO - Solid State Ionics

JF - Solid State Ionics

IS - 19-25 SPEC. ISS.

ER -

Nonstoichiometry of the perovskite-type solid solution La_0.9Ca_0.1Cr_1-yAl_yO_3-δ

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