High-symmetry DC SQUID based on the Nb/AlOx/Nb Josephson junctions for nondestructive evaluation
- Authors: Kostyurina E.A.1,2, Kalashnikov K.V.1,2, Filippenko L.V.1, Kiselev O.S.1, Koshelets V.P.1
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Affiliations:
- Kotel’nikov Institute of Radio Engineering and Electronics
- Moscow Institute of Physics and Technology (State University)
- Issue: Vol 62, No 11 (2017)
- Pages: 1306-1310
- Section: Novel Radio Systems and Elements
- URL: https://journals.rcsi.science/1064-2269/article/view/198988
- DOI: https://doi.org/10.1134/S1064226917110109
- ID: 198988
Cite item
Abstract
Topology of high-symmetry thin-film SQUIDs based on the Nb/AlOx/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.
About the authors
E. A. Kostyurina
Kotel’nikov Institute of Radio Engineering and Electronics; Moscow Institute of Physics and Technology (State University)
Author for correspondence.
Email: kostyurina@hitech.cplire.ru
Russian Federation, Moscow, 125009; Dolgoprudnyi, Moscow oblast, 141700
K. V. Kalashnikov
Kotel’nikov Institute of Radio Engineering and Electronics; Moscow Institute of Physics and Technology (State University)
Email: kostyurina@hitech.cplire.ru
Russian Federation, Moscow, 125009; Dolgoprudnyi, Moscow oblast, 141700
L. V. Filippenko
Kotel’nikov Institute of Radio Engineering and Electronics
Email: kostyurina@hitech.cplire.ru
Russian Federation, Moscow, 125009
O. S. Kiselev
Kotel’nikov Institute of Radio Engineering and Electronics
Email: kostyurina@hitech.cplire.ru
Russian Federation, Moscow, 125009
V. P. Koshelets
Kotel’nikov Institute of Radio Engineering and Electronics
Email: kostyurina@hitech.cplire.ru
Russian Federation, Moscow, 125009