Fabrication of Double-Sided YBa_2Cu_3O_7 Films on CeO_2-Buffered Sapphire Substrates by MOD Process(<Special Section> Superconducting High-frequency Devices)

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概要

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• Double-sided YBa_2Cu_3O_7 (YBCO) films were successfully prepared on 50-mm-diameter CeO_2-buffered sapphire substrates by metalorganic deposition (MOD) process using an acetylacetonate coating solution. Mapping analysis of superconducting current densities (J_c) at 77.3K revealed that J_c values of the double-sided films indicated in excess of 2 MA/cm^2 in the center parts with a small decrease of J_c at the outer side of the specimens. The J_c values of one side (A) are higher than those of the other side (B). Microwave surface resistance (R_s) of sides A and B of the film exhibited 0.57 and 0.60mΩ, respectively, at 70K (12GHz). The difference in the R_s values should be attributed to the slight difference in the J_c values, which arose from the surface morphology of the CeO_2 buffer layer and heat treatment conditions during the firing process in MOD.

• 社団法人電子情報通信学会の論文
• 2006-02-01

著者

• MANABE Takaaki

  National Institute of Advanced Industrial Science and Technology

• KUMAGAI Toshiya

  National Institute of Advanced Industrial Science and Technology

• YAMAGUCHI Iwao

  National Institute of Advanced Industrial Science and Technology (AIST)

• SOHMA Mitsugu

  National Institute of Advance Industrial Science and Technology (AIST)

• KONDO Wakichi

  National Institute of Advance Industrial Science and Technology (AIST)

• KAMIYA Kunio

  National Institute of Advance Industrial Science and Technology (AIST)

• MIZUTA Susumu

  National Institute of Advance Industrial Science and Technology (AIST)

• TSUKADA Kenichi

  National Institute of Advanced Industrial Science and Technology (AIST)

• Kumagai T

  Advanced Manufacturing Research Institute National Institute Of Advanced Industrial Science And Tech

• Mizuta S

  National Institute Of Advanced Industrial Science And Technology (aist)

• Kondo Wakichi

  National Institute Of Advanced Industrial Science And Technology (aist)

• Kumagai Toshiya

  National Inst. Advanced Industrial Sci. And Technol. (aist) Ibaraki Jpn

• Sohma Mitsugu

  National Institute Of Advanced Industrial Science And Technology (aist)

• Sohma Mitsugu

  National Chemical Laboratory For Industry

• Mizuta Satoru

  National Institute Of Advanced Industrial Science And Technology (aist)

• Kamiya Kunio

  National Institute Of Advanced Industrial Science And Technology (aist)

• Manabe Takaaki

  National Institute Of Advanced Industrial Science And Technology (aist)

• Yamaguchi I

  National Institute Of Advanced Industrial Science And Technology (aist)

• Mizuta Susumu

  National Institute of Advanced Industrial Science and Technology (AIST)

• KUMAGAI Toshiya

  Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology

• Manabe Takaaki

  National Institute of Advance Industrial Science and Technology (AIST)

• Kumagai Toshiya

  National Chemical Laboratory for Industry

• Mizuta Susumu

  National Chemical Laboratory for Industry

• Kondo Wakichi

  National Chemical Laboratory for Industry

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