Oxygen stoichiometry and surface treatment effect on electromigration stability of high-Tc Tl2Ba2CuO6+x superconductor

Autor:	A.P. Chernyakova, V.S. Yefanov, M.A. Tanatar, A.I. Akimov, V.V. Dyakin
Rok vydání:	1995
Předmět:	Superconductivity High-temperature superconductivity Materials science Mechanical Engineering Transition temperature Diffusion Analytical chemistry Mineralogy Electromigration law.invention Mechanics of Materials law Seebeck coefficient General Materials Science Grain boundary Water vapor
Zdroj:	Journal of Materials Engineering and Performance. 4:248-251
ISSN:	1544-1024 1059-9495
Popis:	Electromigration stability of Tl2Ba2CuO6+x ceramics is shown to decrease significantly when the material is treated in water vapor atmosphere. TheTc decrease in these samples is accompanied by a resistance increase, while the Seebeck coefficient,S, remains unchanged. The authors conclude that the main effect comes from grain-boundary degradation under the water vapor treatment. For initial samples, electromigration stability strongly depends on the sample oxygen doping level and increases for materials with higher oxygen content. The effect is assumed to be due to the filling of interstitials in Tl-O layers by oxygen atoms.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::db0e6ad5c4c54b406fa92523b31f0c56 https://doi.org/10.1007/bf02649060 Zobrazit plný text záznamu Full text from SpringerLink