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High-symmetry DC SQUID based on the Nb/AlO x /Nb Josephson junctions for nondestructive evaluation

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Abstract

Topology of high-symmetry thin-film SQUIDs based on the Nb/AlO x /Nb tunneling junctions is developed and optimized. The devices exhibit relatively low sensitivity to static external field and electric interference. An experimentally implemented SQUID sensor with an integrated input coil with a sensitivity of 0.26 μA/Ф0 exhibits an intrinsic noise with respect to magnetic flux of less than \(5\mu {\Phi _0}/\sqrt {Hz} \). A system for encapsulation of sensors is developed for applications in multichannel systems for nondestructive evaluation of materials and alternative diagnostic systems.

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Authors and Affiliations

  1. Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow, 125009, Russia

    E. A. Kostyurina, K. V. Kalashnikov, L. V. Filippenko, O. S. Kiselev & V. P. Koshelets

  2. Moscow Institute of Physics and Technology (State University), Dolgoprudnyi, Moscow oblast, 141700, Russia

    E. A. Kostyurina & K. V. Kalashnikov

Authors
  1. E. A. Kostyurina
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  2. K. V. Kalashnikov
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  3. L. V. Filippenko
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  4. O. S. Kiselev
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  5. V. P. Koshelets
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Corresponding author

Correspondence to E. A. Kostyurina.

Additional information

Original Russian Text © E.A. Kostyurina, K.V. Kalashnikov, L.V. Filippenko, O.S. Kiselev, V.P. Koshelets, 2017, published in Radiotekhnika i Elektronika, 2017, Vol. 62, No. 11, pp. 1142–1147.

This work was awarded at the Anisimkin Contest for young scientists in 2016.

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Kostyurina, E.A., Kalashnikov, K.V., Filippenko, L.V. et al. High-symmetry DC SQUID based on the Nb/AlO x /Nb Josephson junctions for nondestructive evaluation. J. Commun. Technol. Electron. 62, 1306–1310 (2017). https://doi.org/10.1134/S1064226917110109

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  • DOI: https://doi.org/10.1134/S1064226917110109

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