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
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume39
Issue number6 A
Publication statusPublished - 2000

Fingerprint

Josephson junctions
Magnetic fields
magnetic fields
Bicrystals
Conversion efficiency
bicrystals
Electric potential
induction
coils
spatial resolution
high resolution
electric potential
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Josephson junction array for the measurement of high-frequency magnetic fields. / Enpuku, Keiji; Ohta, Shusaku; Nakahodo, Atsushi; Minotani, Tadashi.

In: Japanese Journal of Applied Physics, Part 2: Letters, Vol. 39, No. 6 A, 2000.

Research output: Contribution to journalArticle

Enpuku, Keiji ; Ohta, Shusaku ; Nakahodo, Atsushi ; Minotani, Tadashi. / Josephson junction array for the measurement of high-frequency magnetic fields. In: Japanese Journal of Applied Physics, Part 2: Letters. 2000 ; Vol. 39, No. 6 A.
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