YBCO STEP-EDGE JUNCTION DC-SQUID PLANAR GRADIOMETER | Zendy

Bing Han | Zendy; Chen Geng-Hua | Zendy; XU FENG-ZHI | Zendy; Zhao Shi-Ping | Zendy; Yang Qian-Sheng | Zendy

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YBCO STEP-EDGE JUNCTION DC-SQUID PLANAR GRADIOMETER

Author(s) -

Bing Han,

Chen Geng-Hua,

XU FENG-ZHI,

Zhao Shi-Ping,

Yang Qian-Sheng

Publication year - 2000

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.49.2051

Subject(s) - gradiometer , squid , josephson effect , pickup , planar , physics , enhanced data rates for gsm evolution , optics , noise (video) , materials science , sensitivity (control systems) , substrate (aquarium) , optoelectronics , nuclear magnetic resonance , superconductivity , magnetometer , magnetic field , condensed matter physics , telecommunications , electronic engineering , ecology , computer graphics (images) , quantum mechanics , artificial intelligence , computer science , image (mathematics) , biology , oceanography , geology , engineering

A dc-SQUID planar gradiometer has been fabricated with YBa2Cu3O7-δ step-edge Josephson junctions on a 10mm×10mm single crysta l SrTiO3 100 substrate. The gradiometer has a pair of pickup loop s with an area of 33 mm2 and the baseline of 45mm. The system opera tes well in unshielded environment. A rejection of common mode fields of 14×1 02 in all directions and a field gradient sensitivity (white noise) b etter than 8pT/cmHz at 77K have been achieved.

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