AC SUSCEPTIBILITY OF YBCO SUPERCONDUCTING THIN FILMS

Autor:	C. Sbârciog, T. R. Redac, I. Gr. Deac
Rok vydání:	2006
Předmět:	Superconductivity Amplitude Materials science Field (physics) Condensed matter physics Superconducting thin films Statistical and Nonlinear Physics Critical current Intergranular corrosion Thin film Condensed Matter Physics Epitaxy
Zdroj:	Modern Physics Letters B. 20:923-929
ISSN:	1793-6640 0217-9849
DOI:	10.1142/s0217984906011001
Popis:	Ca -doped (x = 0.00, 0.07 and 0.20) epitaxial Y 1-x Ca x Ba 2 Cu 3 O 7-δ thin films were prepared on SrTiO 3 (100) by PLD technique. The superconducting transition temperature is found to decrease with increasing Ca content. The AC-susceptibility data were used to determine the intergranular critical current density, when varying the field amplitude H AC . The temperature dependence of critical current density was determined from the imaginary part of the complex susceptibility, χ′′(T), using Xing's relation. The results were analyzed in terms of superconductor-insulator-superconductor (SIS) and superconductor-normal-superconductor (SNS) type models.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f8e7c7568985569af14fdab1d43bab79 https://doi.org/10.1142/s0217984906011001 Zobrazit plný text záznamu