Artículos de revistas
Preparation and characterization of a homemade Josephson junction prepared from a thin film sintered in a domestic microwave oven
Fecha
2016-03-01Registro en:
Materials Research, v. 19, n. 2, p. 295-299, 2016.
1516-1439
10.1590/1980-5373-MR-2015-0475
S1516-14392016000200295
2-s2.0-84962771520
S1516-14392016000200295.pdf
6913351251148957
0000-0002-2419-2049
Autor
Ciência e Tecnologia Goiano
Universidade Estadual Paulista (Unesp)
Ciência e Tecnologia de São Paulo
Institución
Resumen
A homemade Josephson junction was successfully obtained using a superconductor thin film of the BSCCO system. The film was deposited on a lanthanum aluminate, produced from a commercial powder with a nominal composition Bi1.8Pb0.4Sr2CaCu2Ox, was thermally treated by a domestic microwave oven. The XRD analysis of the film indicated the coexistence of Bi-2212 and Bi-2223 phases and SEM images revealed that a typical superconductor plate-like morphology was formed. From the electrical characterization, performed using DC four probes technique, it was observed an onset superconducting transition temperature measured around 81K. At the current-voltage characteristics curve, a step of electric current at zero-voltage could be observed, an indicative that the tunneling Josephson °Ccurred.