Development of high-throughput fabrication process of HTS SQUID for 51-ch MCG system

A. Tsukamoto, K. Saitoh, K. Yokosawa, D. Suzuki, Y. Seki, A. Kandori, Keiji Tsukada

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A high-throughput high-Tc SQUID fabrication process that can provide the appropriate number of SQUIDs for a 51-channel magnetocardiograph (MCG) has been developed. A new deposition system-based on a pulsed-laser-deposition technique to increase the process throughput in fabricating superconducting YBa2Cu3Oy thin films-was developed. In this system, nine superconducting thin films are successively deposited on bicrystal substrates in one deposition sequence. A mask aligner, which was customized for the bicrystal substrate, was also developed. This system enables mask alignment for the bicrystal grain boundary without the need for preprocessing to visualize it. In addition, the magnetometer pattern was designed to improve the yield for magnetometer fabrication. In this directly coupled magnetometer, four SQUIDs were connected with the same pickup coil. Accordingly, the yield of magnetometer could be enhanced by selecting the best SQUID among the four.

Original languageEnglish
Pages (from-to)1580-1584
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume426-431
Issue numberII
DOIs
Publication statusPublished - 2005

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Keywords

  • Magnetocardiograph
  • SQUID
  • Throughput
  • YBCO
  • Yield

ASJC Scopus subject areas

  • Condensed Matter Physics

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