Oxidation induced decomposition of YBa2Cu3O7−x

Autor:	D. M. Kroeger, K.B. Alexander, T. B. Lindemer, G. C. Marsh, Eliot D. Specht, T. J. Henson, J. Brynestad, Robert K. Williams, J. O. Scarbrough
Rok vydání:	1991
Předmět:	Enthalpy Inorganic chemistry Oxide General Physics and Astronomy chemistry.chemical_element Chemical reaction Decomposition Oxygen Chemical kinetics chemistry.chemical_compound chemistry Phase (matter) Physical chemistry Chemical decomposition
Zdroj:	Journal of Applied Physics. 70:906-913
ISSN:	1089-7550 0021-8979
Popis:	At low oxygen potentials, YBa2Cu3O7−x decomposes by chemical reactions involving reduction. The results of this study show that the compound also decomposes at higher oxygen potentials. The initial decomposition products were found to be Y2BaCuO5 and a Ba‐Cu oxide phase. The Ba‐Cu phase was found to be a peroxide‐type and the decomposition can be described by a chemical reaction involving oxidation: 4(YBa2Cu3O7−x)+(1/2 − 3/2δ +2x)O2⇄2Y2BaCuO5+3Ba2Cu3O6−δ+CuO. At 800 °C the equilibrium pressure for this reaction is slightly
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::72cfaddbcf035628c6217fbe3f8ad5db https://doi.org/10.1063/1.349597 Zobrazit plný text záznamu