Fabrication of Bi₂Sr₂Ca_n-1Cu_nO_y / Al₂O₃-Particles on MgO Films by rf Magnetron Sputtering Method

Abstract:

We deposited Bi2Sr2Ca1Cu2Oy (Bi-2212) superconducting thin films on MgO substrates with or without Al2O3 particles by the rf magnetron sputtering method. From the results, we found that optimum target-substrate distance, rf powers and substrate temperature for obtaining the Bi-2212 films on the MgO substrates were 5mm, 150W and 830°C, respectively. The Bi-2212 films were Bi-2212 single-phase and had the Tc of about 54K . The particle size and the distribution density of Al2O3 were controlled by annealing temperature. The Bi-2212/Al2O3/MgO film showed Bi-2212 single-phase, whereas did not show zero-resistance.

• Periodical: Advances in Science and Technology (Volume 47)
• Pages: 159-164
• DOI: https://doi.org/10.4028/www.scientific.net/AST.47.159
• Online since: October 2006
• Authors: T. Yamane, Satoru Kishida, H. Tanaka, Hideki Yoshikawa, Hiroya Imao
• Keywords: Al₂O₃, Bi₂Sr₂Ca_n-1Cu_nO_y, Pinning Center

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