Fabrication of low surface resistance YBCO films and its application to microwave devices

Shigetoshi Ohshima, Katherine D. Develos, Katsufumi Ehata, Md I. Ali, Masashi Mukaida

Research output: Contribution to journalConference articlepeer-review

9 Citations (Scopus)

Abstract

We have examined a fabrication process of low surface resistance (Rs) YBa2Cu3O7-δ (YBCO) films on CeO2/Al2O3 substrates by a laser ablation technique. The surface morphology of CeO2 films depended on the film thickness of CeO2. A critical value of the CeO2 film thickness at approximately 90 nm was found above which the surface roughness increased abruptly. The Rs of YBCO films also depended on the surface morphology of CeO2 films. The Rs value of YBCO films on thinner CeO2 films (<90 nm) was quite smaller than that of YBCO films on thicker CeO2 films (>90 nm). We have also examined the high-temperature superconducting (HTS) antenna as one of the HTS passive devices, and measured the power handling capability. The compact cooling system for HTS patch antenna was constructed.

Original languageEnglish
Pages (from-to)207-213
Number of pages7
JournalPhysica C: Superconductivity and its applications
Volume335
Issue number1
DOIs
Publication statusPublished - Jun 2000
Externally publishedYes
Event9th Japan-US Workshop on High-Tc Superconductors - Yamanashi, Jpn
Duration: Oct 13 1999Oct 15 1999

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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