Visualization of weak links in melt-textured YBCO ceramics

Autor: N.M. Aleshina, A.A. Polyanskii, I.F. Voloshin, V.N. Goncharov, V. I. Nikitenko, L.M. Fisher, V.K. Vlasko-Vlasov, O.A. Poluschenko
Rok vydání: 1994
Předmět:
Zdroj: Physica C: Superconductivity. 222:367-374
ISSN: 0921-4534
DOI: 10.1016/0921-4534(94)90555-x
Popis: Direct observation of weak links in melt-textured YBCO samples is reported. It is found that weak links appear on the boundaries of textured domains, formed by crystalline plates with a common c -axis direction, at large enough misorientation angles between these directions in neighbouring domains. Such boundaries are shown to be the main defects limiting the current carrying capability of melted ceramics.
Databáze: OpenAIRE