Japanese Journal of Applied Physics · 1991 · 15 citations · 16 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsElectronic MaterialsMagnetic MaterialsNoise In Electronic DevicesSuperconducting MaterialsSuperconducting Thin FilmsJosephson JunctionsMagnetic FluxPhotolithographyQuantum InterferenceStep EdgesThin-film SuperconductorsWhite NoiseYttrium Barium Copper Oxide Films
DC superconducting quantum interference devices (DC-SQUIDs) are made of YBa 2 Cu 3 O 7- x (YBCO) thin films by conventional photolithography and argon ion milling. The YBCO thin films are prepared on magnesia substrates with step edges by the rf magnetron sputtering method. The step-edge junctions for the SQUIDs exhibit clear DC and AC Josephson effects. The SQUIDs respond well to change of magnetic flux and have a white flux noise at 51.4 K of 8.1×10 -5 Φ 0 /Hz 1/2 at 1 Hz, 5.8×10 -5 Φ 0 /Hz 1/2 at 10 Hz and a noise increase at a low-frequency range of less than 10 Hz.
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Sputter Deposition of BiSrCaCuO Thin Films
Masao Fukutomi, Junichi Machida, Yoshiaki Tanaka et al. · Japanese Journal of Applied Physics · 1988 · 692 citations