Imaging high‐temperature superconducting films

Autor:	E. G. Zwartz, L. S. Wright, E. Batalla, Arunava Gupta, S. I. Raider
Rok vydání:	1991
Předmět:	Superconductivity Materials science Flux pinning High-temperature superconductivity Condensed matter physics General Physics and Astronomy Mineralogy Magnetic flux Magnetic field law.invention symbols.namesake law Faraday effect symbols Thin film Penetration depth
Zdroj:	Journal of Applied Physics. 69:7178-7181
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.347610
Popis:	A magneto‐optically active glass, Ce(PO3)3, was used to image field penetration into three superconducting films of YBa2Cu3O7 that were laser ablated on (100)‐oriented SrTiO3 substrates. The magnetic‐field profile in these films was mapped using the Faraday effect in an external field of 92 mT for two of the films and 181 mT for the third film. These contours show regions where flux had easily penetrated, indicating weak pinning, and other regions that were strongly pinning. From the measured field gradients, it was determined that Jc varies by at least an order of magnitude across the surface of the films.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c69df2667b7006b9b89e45cb32b08903 https://doi.org/10.1063/1.347610 Zobrazit plný text záznamu