Progress in Superconductivity

The Korean Superconductivity Society (한국초전도학회)
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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
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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.

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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-IIsuperconductorstrip with current in a perpendicularmagnetic 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 thinsuperconducting films”, Phys. Rev. B, 49, 9802(1994). https://doi.org/10.1103/PhysRevB.49.9802
  6. Jaeun Yoo, Yonghwan Jung, Jaeyoung Lee, SunmeLim, SangMoo Lee, YeHyun Jung, Dojun Youm,Hosup Kim, Hongsoo Ha and SangSoo Oh,“Scanning Hall probe measurements of fielddistributions of a coated conductor under appliedfields”, Supercond. Sci. Technol., 19, 1291 (2006). https://doi.org/10.1088/0953-2048/19/12/013
  7. Jaeun Yoo, SangMoo Lee, YeHyun Jung, JaeyoungLee, Dojun Youm, Rock-Kil Ko and SangSoo Oh,“Calculations of AC current losses and AC magneticlosses from the scanning Hall probe measurements fora coated conductor”, Physica C, 468, 160 (2008). https://doi.org/10.1016/j.physc.2007.11.002
  8. Jaeun Yoo, SangMoo Lee, YeHyun Jung, JaeyoungLee, Dzung Nguyen Xuan, Dojun Youm, Hosup Kim,Hongsoo Ha, KyuJeong Song, SangSoo Oh andSangjun Oh, “The effects of a magnetic fielddependent critical current on the hysteresis loss of acoated conductor”, Supercond. Sci. Technol., 21,085020 (2008). https://doi.org/10.1088/0953-2048/21/8/085020
  9. Jaeun Yoo, SangMoo Lee, Yehyun Jung, KisungKwak, Joonkyu Rhee, Dojun Youm, Hosup Kim,Hongsoo Ha, SangSoo Oh and Sangjun Oh, “Estimationof hysteresis loss in $Sm_1Ba_2Cu_3O_{7-{\delta}}$ coated conductorvia scanning Hall probe measurements withsimultaneously 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 thinsuperconducting 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-fluxpenetration into a current-carrying high-temperaturesuperconductorstrip”, Phys. Rev. B, 59, 9655 (1999). https://doi.org/10.1103/PhysRevB.59.9655
  12. L. Lucarelli, G. Luepke, T. J. Haugan, G. A. Levinand P. N. Barnes, “Time-resolved magneto-opticalimaging of $Y_1Ba_2Cu_3O_{7-{\delta}}$ thin films in high-frequencyAC current regime”, Supercond. Sci. Technol., 19667 (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 aYBaCuO strip studied by magneto-optical imaging”,Supercond. Sci. Technol., 15, 82 (2002). https://doi.org/10.1088/0953-2048/15/1/314