Millimeter wave surface resistance measurements of high-Tc superconductive thin films using a Nb open resonator

Bokuji Komiyama, Hisashi Shimakage, Sadahiko Miura, Hisanao Tsuge

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

A hemispherical open resonator with a Nb spherical mirror has been developed to measure the surface resistance (Rs) of high-Tc superconducting films with improved sensitivity over a broad range of temperatures at W-band frequencies. Because of its open structure, the temperature of the superconducting sample can be controlled independently, while keeping the temperature of the Nb mirror at 4.2 K. We have measured the Rs of YBCO thin films successfully by this technique over a temperature range from 4.2 to 90 K at W-band frequencies. However, the estimated Rs of the spherical mirror, which was machined from a Nb rod and mechanically polished, was 70 m O at 100 GHz and 4.2 K and the expected improvement in measurement sensitivity was not obtained.

Original languageEnglish
Title of host publication1994 24th European Microwave Conference, EUMA 1994
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages986-991
Number of pages6
ISBN (Electronic)9780000000002
DOIs
Publication statusPublished - 1994 Jan 1
Externally publishedYes
Event24th European Microwave Conference, EUMA 1994 - Cannes, France
Duration: 1994 Sep 51994 Sep 9

Publication series

Name1994 24th European Microwave Conference, EUMA 1994
Volume2

Conference

Conference24th European Microwave Conference, EUMA 1994
CountryFrance
CityCannes
Period94/9/594/9/9

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Instrumentation
  • Electrical and Electronic Engineering

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