Josephson junction array for the measurement of high-frequency magnetic fields

Keiji Enpuku, Shusaku Ohta, Atsushi Nakahodo, Tadashi Minotani

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We propose the use of a high-Tc Josephson junction array for the measurement of high-frequency magnetic fields with high spatial resolution. The voltage vs magnetic field (V-B) relationship of the bicrystal junction was studied for this purpose. The junction array fabricated with an area of 120 μm by 50 μm showed the conversion efficiency dV/dB = 63 V/T at T = 77 K. This value indicates that the junction array is more sensitive, up to 1.7 GHz, than the conventional induction coil having the same area. Measurement of the magnetic field with a frequency of 130 MHz was successfully demonstrated using the junction array. Performance of the junction array will be much improved by decreasing the operational temperature.

Original languageEnglish
Pages (from-to)L510-L513
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume39
Issue number6 A
DOIs
Publication statusPublished - 2000

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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