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

研究成果: ジャーナルへの寄稿 › 学術誌 › 査読

17 被引用数 (Scopus)

抄録

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.

本文言語	英語
ページ（範囲）	1925-1928
ページ数	4
ジャーナル	Solid State Ionics
巻	177
号	19-25 SPEC. ISS.
DOI	https://doi.org/10.1016/j.ssi.2006.06.001
出版ステータス	出版済み - 10月 15 2006
外部発表	はい

!!!All Science Journal Classification (ASJC) codes

化学一般
材料科学一般
凝縮系物理学

文献へのアクセス

10.1016/j.ssi.2006.06.001

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引用スタイル

@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,

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

language = "English",

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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.

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IS - 19-25 SPEC. ISS.

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