Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
권호 표지
DOI QR코드

DOI QR Code

Lorentz Force Density Distribution of a Current Carrying Superconducting Tape in a Perpendicular Magnetic Field

  • Yoo, J. (Department of Materials Science and Engineering, Seoul National University) ;
  • Kwak, K. (Department of Physic, KAIST) ;
  • Rhee, J. (Department of Physic, KAIST) ;
  • Park, C. (Department of Materials Science and Engineering, Seoul National University) ;
  • Youm, D. (Department of Physic, KAIST) ;
  • Park, B.J. (Energy Storage team, Green Growth Lab, KEPRI) ;
  • Han, Y.H. (Energy Storage team, Green Growth Lab, KEPRI)
  • Received : 2010.10.25
  • Accepted : 2010.11.11
  • Published : 2010.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

The Lorentz force distribution of a high $T_c$ superconducting tape with increasing transport currents in magnetic field ($H_a$) was visualized. The external magnetic field was applied normally to the coated conductor tape surface after zero-field cooling, and the transport current ($I_a$) was increased stepwise from 0 to 90 % of the values of the critical current ($I_c$ ($H_a$)) at applied filed, Ha. The field distribution (H(x)) near the sample surface across the tape width (2w) was measured using the scanning Hall probe method. Applying an inversion to the measured field distribution, we obtained the underlying current distribution (J(x)), from which the magnetic induction, B(x) was calculated with Biot-Savart law. Then Lorentz force per unit length was calculated using F(x)=J(x)${\times}$B(x), which appears to be very inhomogeneous along the tape width due to the complicated distributions of J(x) and B(x).

Keywords

References

  1. Iijima Y, Kaimoto K, Sutoh Y, Ajimura S and Saitoh T, "Development of long Y-123 coated conductors for coil-applications by IBAD/PLD method," IEEE Trans. Appl. Supercond. vol. 15 pp. 2590, Jun. 2005. https://doi.org/10.1109/TASC.2005.847662
  2. Selvamanickam V, Knoll A, Xie Y, Li Y, Chen Y, Reeves J, Xiong X, Qiao Y, Salagj T, Lenseth K, Hazelton D, Reis C, Yumura H and Weber C,' Scale up of applications-ready practical Y-Ba-Cu-O coated conductors," IEEE Trans. Appl. Supercond. vol. 15 pp. 2596, Jun. 2005. https://doi.org/10.1109/TASC.2005.847664
  3. J. K. F. Yau, N. Savvides and CC Sorrell, "Influence of mechanical strain on critical current density and microstructure of silver-sheathed Bi(Pb)2223 superconducting tapes," Physica C, vol. 266, pp. 223-229, 1996. https://doi.org/10.1016/0921-4534(96)00327-9
  4. N. Cheggour, J. W. Ekin, C. L. H. Thieme, Y. Y. Xie, V. Selvamanickam and R. Feenstra, "Reversible axial-strain effect in Y-Ba-Cu-O coated conductors," Supercond. Sci. Tech., vol. 18, no. 12, pp. S319-S324, 2005. https://doi.org/10.1088/0953-2048/18/12/016
  5. B. S. Lee, K. C. Chung, S. M. Lim, H. J. Kim, D. Youm and C. Park, "Fabrication of $Sm_1Ba_2Cu_3O_7$ coated conductors using the co-evaporation method," Supercond. Sci. Technol. vol. 17, pp. 580-584, Apr. 2004. https://doi.org/10.1088/0953-2048/17/4/002
  6. H. S. Ha, H. S. Kim, J. S. Yang, Y. H. Jung, R. K. Ko, K. J. Song, D. W. Ha, S. S Oh, H. K. Kim, K. K. Yoo, C. Park, D. Youm, S. H. Moon and J. H. Joo, "Critical current density of SmBCO coated conductor on IBAD-MgO substrate fabricated by co-evaporation," Physica C vol. 463-465, pp. 493-496, Oct. 2007. https://doi.org/10.1016/j.physc.2007.01.039
  7. T. H. Johansen, M. Baziljevich, H. Bratsberg, and Y. Galperin, P. E. Lindelof Y. Shen and P. Vase, "Direct observation of the current distribution in thin superconducting strips using magneto-optic imaging," Phys. Rev. B vol. 54, pp. 16264-16269, Dec. 1996. https://doi.org/10.1103/PhysRevB.54.16264
  8. A. V. Bobyl, D. V. Shantsev, Y. M. Galperin, T. H. Johansen, M. Baziljevich and S. F. Karmanenko, "Relaxation of transport current distribution in a YBaCuO strip studied by magneto-optical imaging," Supercond. Sci. Technol. vol. 15, pp. 82-89, Jan. 2002. https://doi.org/10.1088/0953-2048/15/1/314
  9. Jaeun Yoo, Jaeyoung Lee, and Dojun Youm, "Field dependence of current profiles induced in a superconducting film," J. Korean Phys. Soc. vol. 51, pp. 1776-1781, Nov. 2007. https://doi.org/10.3938/jkps.51.1776
  10. Jaeun Yoo, SangMoo Lee, YeHyun Jung, Jaeyoung Lee, Dzung Nguyen Xuan, Dojun Youm, Hosup Kim, Hongsoo Ha, and SangSoo Oh, "Calculations of AC magnetic losses from the experimental field profiles in a coated conductor under various external fields and temperatures," IEEE Trans. Appl. Supercond. vol. 18, pp. 1341-1344, Jun. 2008. https://doi.org/10.1109/TASC.2008.921331
  11. E. H. Brandt and M. Indenbom, "Type-II-superconductor strip with current in a perpendicular magnetic field," Phys. Rev. B vol. 48, pp. 12893-12906, Nov. 1993. https://doi.org/10.1103/PhysRevB.48.12893