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2008 | 114 | 1 | 99-106
Article title

Kim-Type Critical State Models and Critical Currents of Thallium Based Superconductors

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EN
Abstracts
EN
The two extended formulae in the power form of the Kim critical state model were used to fit the critical currents versus the dc applied magnetic field. Two samples of thallium based superconductors: the (Tl_{0.6}Pb_{0.24}Bi_{0.16})(Sr_{0.9}Ba_{0.1})_2Ca_2Cu_3O_y film on single-crystalline lanthanum aluminate and the bulk (Tl_{0.5}Pb_{0.5})Sr_2(Ca_{1.8}Gd_{0.2})Cu_2O_y were chosen to test the models. The formulae were compared to the percolation model described by the exponential expression. The first model fits the experimental data better for the thallium based film whereas the second approach is better for the thallium based bulk sample.
Keywords
EN
Contributors
author
  • Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, al. Mickiewicza 30, PL-30-059, Kraków, Poland
author
  • Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, al. Mickiewicza 30, PL-30-059, Kraków, Poland
  • Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, al. Mickiewicza 30, PL-30-059, Kraków, Poland
author
  • Institute for Chemical Technology of Inorganic Materials, Johannes Kepler University, A-4040 Linz, Austria
author
  • Institute for Chemical Technology of Inorganic Materials, Johannes Kepler University, A-4040 Linz, Austria
author
  • Institute for Chemical Technology of Inorganic Materials, Johannes Kepler University, A-4040 Linz, Austria
References
  • 1. Y.B. Kim, C.F. Hempstead, A.R. Strand, Phys. Rev. Lett. 9, 306 (1962)
  • 2. Y.B. Kim, C.F. Hempstead, A.R. Strand, Phys. Rev. 129, 528 (1963)
  • 3. M. Ciszek, B.A. Głowacki, S.P. Ashworth, A.M. Campbell, W.Y. Liang, R. Flukiger, R.E. Gladyshevskii, Physica C 260, 93 (1996)
  • 4. T.B. Doyle, R.A. Doyle, Phys. Rev. B 47, 8111 (1993)
  • 5. W.M. Woch, R. Zalecki, A. Kołodziejczyk, O. Heiml, G. Gritzner, Physica C 434, 17 (2006)
  • 6. W.M. Woch, R. Zalecki, A. Kołodziejczyk, H. Sudra, G. Gritzner, unpublished results
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv114n113kz
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