Fabrication and properties of HTS diffusion type weak links

Autor:	G. Brorsson, Tord Claeson, Zdravko Ivanov
Rok vydání:	1991
Předmět:	Superconductivity Josephson effect Electron mobility Materials science Fabrication High-temperature superconductivity Condensed matter physics Microstructure Electronic Optical and Magnetic Materials law.invention Resist law Grain boundary Electrical and Electronic Engineering
Zdroj:	IEEE Transactions on Magnetics. 27:3324-3327
ISSN:	1941-0069 0018-9464
DOI:	10.1109/20.133924
Popis:	Intentionally weakened links were produced by diffusing Al or Cu into the grain boundaries of microbridges of high-T/sub c/ superconductors. Thin and narrow (70-130 mm) strips of Al or Cu were deposited across previously patterned microbridges and diffused into them for a short time at 300-450 degrees C. DC and RF Josephson properties were registered. I/sub c/R/sub n/ products of up to 3 mV were measured at 4.2 K for a laser-ablated Bi-Pb-Ca-Sr-Cu-O film (T/sub c/=64 K) and 0.9 mV at 77 K for a Y-Ba-Cu-O film (T/sub c/=87 K). Problems with electron resist residues could be circumvented by depositing a thin layer of Ag on the high-T/sub c/ superconductor before further processing.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e618b0cdb348968ef00585ca3c259ce4 https://doi.org/10.1109/20.133924 Zobrazit plný text záznamu