Modeling of Critical Current Density of Bulk High T_c Superconductors

• Authors: M. Santosh
• Languages of publication: EN

Abstracts

EN

Magnetic field dependence of critical current density (J_{c}) of ErBa_2Cu_3O_y thick film "Er-123" and melt textured GdBa_2Cu_3O_y bulk "Gd-123" at liquid nitrogen temperature is reported. Gd-123 exhibits a usual peak effect at magnetic fields around 2 T, while J_{c} of the Er-123 thick film continuously decreases with increasing field. The model of thermally activated flux motion was adopted to fit the critical current density of both Gd-123 and Er-123 materials. It was found that the critical current density of both types of the high T_{c} materials could be modeled by the model of thermally activated flux motion utilizing a combination of two functions; one increasing and another one decreasing with field.

Keywords

EN

74.72.-h; 74.25.Sv; 74.20.-z

Discipline

• 74.72.-h: Cuprate superconductors
• 74.20.-z: Theories and models of superconducting state
• 74.25.Sv: Critical currents

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 3
• Pages: 808-811

Dates

published

2014-08

received

2014-02-03

(unknown)

2014-05-05

Contributors

author

M. Santosh

• St. Mary International School, 1-16-19, Seta, Setagaya-ku, Tokyo 158-8668, Japan

References

• [1] M. Murakami, N. Sakai, T. Higuchi, S.I. Yoo, Supercond. Sci. Technol. 9, 1015 (1996), doi: 10.1088/0953-2048/9/12/001
• [2] M. Tomita, M. Murakami, Nature 421, 517 (2003), doi: 10.1038/nature01350
• [3] J.R. Hull, Supercond. Sci. Technol 13, R1 (2001), doi: 10.1088/0953-2048/13/2/201
• [4] T. Ohara, H. Kumakura, H. Wada, Physica C 13, 1272 (2001), doi: 10.1016/S0921-4534(01)00530-5
• [5] A.C. Day, M. Strasik, K.E. McCrary, P.E. Johnson, J.W. Gabrys, J.R. Schindler, R.A. Hawkins, D.L. Carlson, M.D. Higgins, J.R. Hull, Supercond. Sci. Technol. 15, 838 (2002), doi: 10.1088/0953-2048/15/5/340
• [6] H. Hayashi, N. Nagabuchi, N. Sahi, T. Mizumori, K. Sano, Physica C 412-414, 766 (2004), doi: 10.1016/j.physc.2004.01.101
• [7] Y. Zhao, J.S. Wang, S.Y. Wang, Z.Y. Ren, H.H. Song, X.R. Wang, C.H. Cheng, Physica C 412-414, 771 (2004), doi: 10.1016/j.physc.2004.01.102
• [8] M. Santosh, M.R. Koblischka, J. Phys. Educat. (2013), communicated
• [9] M. Santosh, Summer Internship Report, submitted to SIT, 2012
• [10] D X. Chen, R.B. Goldfarb, J. Appl. Phys. 66, 2489 (1989), doi: 10.1063/1.344261
• [11] G.K. Perkins, L.F. Cohen, A.A. Zhukov, A.D. Caplin, Phys. Rev. B 51, 8513 (1995), doi: 10.1103/PhysRevB.51.8513
• [12] G.K. Perkins, A.D. Caplin, Phys. Rev. B 54, 12551 (1996), doi: 10.1103/PhysRevB.54.12551
• [13] M. Jirsa, L. Půst, D. Dlouhý, M.R. Koblischka, Phys. Rev. B 55, 3276 (1997), doi: 10.1103/PhysRevB.55.3276
• [14] H. Küpfer, Th. Wolf, C. Lessing, A.A. Zhukov, X. Lançon, R. Meier-Hirmer, W. Schauer, H. Wühl, Phys. Rev. B 58, 2886 (1998), doi: 10.1103/PhysRevB.58.2886
• [15] N. Chikumoto, J. Yoshioka, M. Murakami, Physica C 291, 79 (1997), doi: 10.1016/S0921-4534(97)01705-X

Identifiers

DOI

10.12693/APhysPolA.126.808