Fabrication of superconducting quantum interference devices based on Bi₂Sr₂CaCu₂O_8+δ constriction-type junctions

Authors

Benito A. Baje ⋅ PH National Institute of Physics, University of the Philippines Diliman
Fritz B. Awitan ⋅ PH National Institute of Physics, University of the Philippines Diliman
Glaiza S. Blanca ⋅ PH National Institute of Physics, University of the Philippines Diliman
Roland V. Sarmago ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

The direct-current superconducting quantum interference devices (dc-SQUIDs) based on Superconducting-Constriction-Superconducting (S-C-S) junctions have been successfully fabricated and studied from caxis oriented Bi₂Sr₂CaCu₂O_8+δ (Bi-2212) films grown on MgO substrate by combined sedimentation-deposition, liquid phase sintering and annealing technique. Films had a superconducting transition temperature, T_c¬ 57 K. Reduction of T_c never larger than 4 K indicates that the superconducting properties of the films are not appreciably altered after patterning. However, a broadening of the transition width and a decrease in the slope at the metallic regime of the R-T curve was observed. These changes in the properties can be attributed to the photoresist contamination and the effect of the etchant on the film.

Downloads

Issue

2008: Proceedings of the 26th Samahang Pisika ng Pilipinas Physics Congress

Taking physics to the summit
22-24 October 2008, University of the Philippines Baguio, Baguio City

Article ID

SPP-2008-4A-04

Section

Materials Physics

Published

2008-10-22

How to Cite

[1]

BA Baje, FB Awitan, GS Blanca, and RV Sarmago, Fabrication of superconducting quantum interference devices based on Bi2Sr2CaCu2O8+δ constriction-type junctions, Proceedings of the Samahang Pisika ng Pilipinas 26, SPP-2008-4A-04 (2008). URL: https://proceedings.spp-online.org/article/view/SPP-2008-4A-04.