Hip Phase Diagram of YBCO Type Superconductor

Autor:	Narukawa Yutaka, Masasuke Takata, Yuichi Sawai, Kozo Ishizaki, A. Kuzjukevics
Rok vydání:	1991
Předmět:	Superconductivity Phase boundary Crystallography Materials science chemistry Analytical chemistry chemistry.chemical_element Fugacity Partial pressure Redox Oxygen Phase diagram Line (formation)
Zdroj:	MRS Proceedings. 251
ISSN:	1946-4274 0272-9172
DOI:	10.1557/proc-251-307
Popis:	The oxygen partial pressure - temperature phase diagram of YBCO type superconductors reported before by us showed that the YBa2Cu4Ox phase formation from Y2Ba4Cu7Oz with CuO, as well as from YBa2Cu3Oy, with CuO are oxidation reactions. The total gas pressure - temperature phase diagram shows that the YBa2Cu4Ox, phase formation temperature from Y2Ba4Cu7Oz with CuO increases with increasing the total gas pressure. On this phase boundary line, the fugacity of oxygen increases with increasing the total gas pressure even at constant oxygen partial pressure.
Databáze:	OpenAIRE
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