Progress in Superconductivity

The Korean Superconductivity Society (한국초전도학회)
권호 표지

Hysteresis Loss in a $Sm_1Ba_2Cu_3O_{7-\delta}$ Coated Conductor under Simultaneously Applied Field and Current with Phase Differences

위상차를 갖고 변화하는 자기장과 전류가 동시에 가해진 $Sm_1Ba_2Cu_3O_{7-\delta}$ Coated Conductor의 자기이력 손실

  • Published : 2009.04.30
Download PDF
⟨ Previous Next ⟩

Abstract

The magnetic field profiles near the surface of a $Sm_1Ba_2Cu_3O_{7-\delta}$ coated conductor(CC-tape) under magnetic field and current that were applied simultaneously with phase differences ${\phi}s$ were measured using scanning Hall probe method. Measurements were carried out along the elliptic load lines with $\phi=90^{\circ}\;and\;45^{\circ}$ for some $B_{peak},\;I_{peak}$ values. From the measured field profiles, sheet current density J(x, $B_a,\;I_a$) and magnetic flux density $B_0(x,\;B_a,\;I_a)$ profiles in the CC-tape were calculated. Using these J(x, $B_a,\;I_a$) and $B_0(x,\;B_a,\;I_a)$ profiles, we estimated the hysteresis energy loss Q in the CC-tape. The estimated Qs, together with our previous results for $\phi=0^{\circ}$ from [9], were compared with theoretical values based on Brandt's calculation.

Keywords

References

  1. M. N. Wilson, Superconducting Magnets, Clarendon Press Oxford (1983).
  2. N. Amemiya, Z. Jiang, Y. Iijima, K. Kakimoto, T. Saitoh, “Total AC loss of YBCO coated conductor carrying AC transport current in AC transverse magnetic field with various orientations” , Supercond. Sci. Technol., 17, 983 (2004). https://doi.org/10.1088/0953-2048/17/8/005
  3. E. H. Brandt and M. Indenbom, “Type-IIsuperconductor strip with current in a perpendicular magnetic field”, Phys. Rev. B, 48 12893 (1993). https://doi.org/10.1103/PhysRevB.48.12893
  4. W. J. Carr, “Loss in a striated coated conductor”, Supercond. Sci. Technol., 20, 168 (2007). https://doi.org/10.1088/0953-2048/20/3/010
  5. E. Zeldov, J. R. Clem, M. McElfresh and M. Darwin, “Magnetization and transport currents in thin superconducting films”, Phys. Rev. B, 49, 9802 (1994). https://doi.org/10.1103/PhysRevB.49.9802
  6. Jaeun Yoo, Yonghwan Jung, Jaeyoung Lee, Sunme Lim, SangMoo Lee, YeHyun Jung, Dojun Youm, Hosup Kim, Hongsoo Ha and SangSoo Oh, “Scanning Hall probe measurements of field distributions of a coated conductor under applied fields”, Supercond. Sci. Technol., 19, 1291 (2006). https://doi.org/10.1088/0953-2048/19/12/013
  7. Jaeun Yoo, SangMoo Lee, YeHyun Jung, Jaeyoung Lee, Dojun Youm, Rock-Kil Ko and SangSoo Oh, “Calculations of AC current losses and AC magnetic losses from the scanning Hall probe measurements for a coated conductor”, Physica C, 468, 160 (2008). https://doi.org/10.1016/j.physc.2007.11.002
  8. Jaeun Yoo, SangMoo Lee, YeHyun Jung, Jaeyoung Lee, Dzung Nguyen Xuan, Dojun Youm, Hosup Kim, Hongsoo Ha, KyuJeong Song, SangSoo Oh and Sangjun Oh, “The effects of a magnetic field dependent critical current on the hysteresis loss of a coated conductor”, Supercond. Sci. Technol., 21, 085020 (2008). https://doi.org/10.1088/0953-2048/21/8/085020
  9. Jaeun Yoo, SangMoo Lee, Yehyun Jung, Kisung Kwak, Joonkyu Rhee, Dojun Youm, Hosup Kim, Hongsoo Ha, SangSoo Oh and Sangjun Oh, “Estimation of hysteresis loss in $Sm_1Ba_2Cu_3O_{7-{\delta}}$ coated conductor via scanning Hall probe measurements with simultaneously applied field and current”, Supercond. Sci. Technol., 22, 045001 (2009). https://doi.org/10.1088/0953-2048/22/4/045001
  10. T. H. Johansen, M. Baziljevich, H. Bratsberg, 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, 54, 16264 (1996). https://doi.org/10.1103/PhysRevB.54.16264
  11. M. E. Gaevski, A. V. Bobyl, D. V. Shantsev, Y. M. Galperin, T. H. Johansen, M. Baziljevich and H. Bratsberg, “Magneto-optical study of magnetic-flux penetration into a current-carrying high-temperaturesuperconductor strip”, Phys. Rev. B, 59, 9655 (1999). https://doi.org/10.1103/PhysRevB.59.9655
  12. L. Lucarelli, G. Luepke, T. J. Haugan, G. A. Levin and P. N. Barnes, “Time-resolved magneto-optical imaging of $Y_1Ba_2Cu_3O_{7-{\delta}}$ thin films in high-frequency AC current regime”, Supercond. Sci. Technol., 19 667 (2006). https://doi.org/10.1088/0953-2048/19/6/041
  13. 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., 15, 82 (2002). https://doi.org/10.1088/0953-2048/15/1/314