Importance of electronic band structure to nonstoichiometric behaviour of La0.8Sr0.2CoO3

Martijn H.R. Lankhorst, Henricus J.M. Bouwmeester, H. Verweij

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Abstract

The partial energy and entropy involved in the process of oxygen incorporation into the mixed oxygen ion and electronic conducting La0.8Sr0.2CoO3 was measured by oxygen coulometric titration. The partial entropy can be assigned to the configurational entropy of randomly distributed oxygen vacancies. The partial energy decreases linearly with increasing oxygen nonstoichiometry. These observations can be explained assuming that electrons, created during vacancy formation, gradually fill electron states in a wide band resulting in a corresponding increase of the Fermi level.
Original languageUndefined
Pages (from-to)21-27
JournalSolid state ionics
Volume96
Issue number1-2
DOIs
Publication statusPublished - 1997

Keywords

  • IR-57221

Cite this

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title = "Importance of electronic band structure to nonstoichiometric behaviour of La0.8Sr0.2CoO3",
abstract = "The partial energy and entropy involved in the process of oxygen incorporation into the mixed oxygen ion and electronic conducting La0.8Sr0.2CoO3 was measured by oxygen coulometric titration. The partial entropy can be assigned to the configurational entropy of randomly distributed oxygen vacancies. The partial energy decreases linearly with increasing oxygen nonstoichiometry. These observations can be explained assuming that electrons, created during vacancy formation, gradually fill electron states in a wide band resulting in a corresponding increase of the Fermi level.",
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author = "Lankhorst, {Martijn H.R.} and Bouwmeester, {Henricus J.M.} and H. Verweij",
year = "1997",
doi = "10.1016/S0167-2738(96)00620-0",
language = "Undefined",
volume = "96",
pages = "21--27",
journal = "Solid state ionics",
issn = "0167-2738",
publisher = "Elsevier",
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Importance of electronic band structure to nonstoichiometric behaviour of La0.8Sr0.2CoO3. / Lankhorst, Martijn H.R.; Bouwmeester, Henricus J.M.; Verweij, H.

In: Solid state ionics, Vol. 96, No. 1-2, 1997, p. 21-27.

Research output: Contribution to journalArticleAcademic

TY - JOUR

T1 - Importance of electronic band structure to nonstoichiometric behaviour of La0.8Sr0.2CoO3

AU - Lankhorst, Martijn H.R.

AU - Bouwmeester, Henricus J.M.

AU - Verweij, H.

PY - 1997

Y1 - 1997

N2 - The partial energy and entropy involved in the process of oxygen incorporation into the mixed oxygen ion and electronic conducting La0.8Sr0.2CoO3 was measured by oxygen coulometric titration. The partial entropy can be assigned to the configurational entropy of randomly distributed oxygen vacancies. The partial energy decreases linearly with increasing oxygen nonstoichiometry. These observations can be explained assuming that electrons, created during vacancy formation, gradually fill electron states in a wide band resulting in a corresponding increase of the Fermi level.

AB - The partial energy and entropy involved in the process of oxygen incorporation into the mixed oxygen ion and electronic conducting La0.8Sr0.2CoO3 was measured by oxygen coulometric titration. The partial entropy can be assigned to the configurational entropy of randomly distributed oxygen vacancies. The partial energy decreases linearly with increasing oxygen nonstoichiometry. These observations can be explained assuming that electrons, created during vacancy formation, gradually fill electron states in a wide band resulting in a corresponding increase of the Fermi level.

KW - IR-57221

U2 - 10.1016/S0167-2738(96)00620-0

DO - 10.1016/S0167-2738(96)00620-0

M3 - Article

VL - 96

SP - 21

EP - 27

JO - Solid state ionics

JF - Solid state ionics

SN - 0167-2738

IS - 1-2

ER -