Contactless measurement of critical current of high temperature superconductor tape by magnetic circuit

C. Gu; T.-M. Qu; S.-N. Zou; Z. Han
August 2010
Review of Scientific Instruments;Aug2010, Vol. 81 Issue 8, p085105
Academic Journal
A method based on the principle of the magnetic circuit is proposed and realized for contactless measurement of critical current (Ic) of high temperature superconductor tapes. This method has two unique features: first, it eliminates noises caused by mechanical fluctuations and thus makes high speed and high stability measurement possible and second, adapts for both Bi2Si2Ca2Cu3Ox (Bi2223) and YBa2Cu3O7-x (YBCO) tape, which even has a magnetic substrate. Theoretical analysis is given and an apparatus for the reel-to-reel measurement has been constructed, by which continuous inspection of Ic uniformity of YBCO and Bi2223 tapes measured at different speeds is reported.


Related Articles

  • Thermal modeling of the Tevatron magnet system. Theilacker, J. C.; Klebaner, A. L. // AIP Conference Proceedings;2002, Vol. 613 Issue 1, p90 

    Operation of the Tevatron at lower temperatures, for the purpose of allowing higher energies, has resulted in a renewed interest in thermal modeling of the magnet strings. Static heat load and AC loses in the superconducting coils are initially transported through subcooled liquid helium. Heat...

  • On a possible mechanism of low surface magnetic field structure of quark stars. Nag, Nandini; Ghosh, Sutapa; Saha, Roni; Chakrabarty, Somenath // Astrophysics & Space Science;Sep2009, Vol. 323 Issue 2, p123 

    Following some of the recent articles on hole super-conductivity and related phenomena by Hirsch (Phys. Lett. A 134:451, ; Phys. Rev. B 68:184502, ; Phys. Rev. B 71:184521, and Phys. Lett. A 345:453, ) a simple model is proposed to explain the observed low surface magnetic field of the expected...

  • Materials: Superconductor photonics. Singh, Ranjan; Zheludev, Nikolay // Nature Photonics;Sep2014, Vol. 8 Issue 9, p679 

    The article focuses on the application of superconductor materials exhibiting electrical resistivity that disappears at low temperature in photonics field. Topics discussed include use of superconductors in artificial structures that are patterned on a sub-wavelength scale with customizable...

  • Thermal-Hydraulic Analysis of PF Coils During Plasma Discharges on EAST. Li, Junjun; Wang, Qiuliang; Li, Jiangang; Wu, Yu; Qian, Jing // Journal of Superconductivity & Novel Magnetism;Aug2012, Vol. 25 Issue 6, p2033 

    For the consideration of superconducting magnet stability, it is important to keep enough temperature margin under the different operating conditions for the plasma discharge in Tokamak. In order to estimate the stability of the magnets for Experimental Advanced Superconducting Tokamak (EAST),...

  • Continuous critical current measurement of high-temperature superconductor tapes with magnetic substrates using magnetic-circuit method. Zou, S. N.; Gu, C.; Qu, T. M.; Han, Z. // Review of Scientific Instruments;Oct2013, Vol. 84 Issue 10, p105106 

    The critical current (Ic) of high-temperature superconductor (HTS) tapes has to be examined not only for short samples, but also for the entire tape, because local weak points can possibly lead to the quenching of the whole HTS device. Some methods were reported for continuous Ic measurement...

  • Modeling the dc superconducting quantum interference device coupled to the multiturn input coil. Enpuku, K.; Yoshida, K. // Journal of Applied Physics;5/15/1991, Vol. 69 Issue 10, p7295 

    Presents a study which investigated the effect of a multiturn input coil on superconducting quantum interference device (SQUID) characteristics, the radio frequency properties of the coupling circuit between the SQUID coil and the input coil. Experimental results; Information on the modeling of...

  • Superstripes and Superconductivity in Complex Granular Matter. Bianconi, Antonio; Innocenti, Davide; Campi, Gaetano // Journal of Superconductivity & Novel Magnetism;Aug2013, Vol. 26 Issue 8, p2585 

    The role of phase separation and superstripes in high temperature superconductors and related materials has been discussed at the meeting in Erice, Italy, July 11-17, 2012. The focus was on the point where we are after 25 years of research on the key role of complex structural, electronic, and...

  • A search for field-induced ordering in the optimally doped Ba(Fe,Co)2As2 superconductor. Quinn, Katherine; Ryan, D. H.; Canfield, P. C.; Bud'ko, S. L.; Cadogan, J. M. // Journal of Applied Physics;May2013, Vol. 113 Issue 17, p17E127 

    A 57Fe Mössbauer search for field-induced magnetic order in optimally doped Ba(Fe1-xCox)2As2 in fields of up to 6 T showed no changes that could be attributed to field-induced order. We also observed no difference between the normal (30 K) and superconducting states (5 K). Any field-induced...

  • Vortices in Hubbard Superconductors: A Bogoliubov-de Gennes Approach. Pérez, Luis; Galván, César; Wang, Chumin // Journal of Superconductivity & Novel Magnetism;Feb2016, Vol. 29 Issue 2, p285 

    Based on the Bogoliubov-de Gennes formalism, we study vortices with quantum magnetic fluxes in two-dimensional supercells, when an external magnetic field ( B) is applied to s-, d-, and anisotropic s-wave superconductors. This study is carried out by using a generalized Hubbard model including...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics