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

• Authors: W. Woch , R. Zalecki , A. Kołodziejczyk , O. Heiml , H. Sudra , G. Gritzner
• Languages of publication: 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

74.72.Jt; 74.25.Sv; 74.25.Ha

Discipline

• 74.25.Ha: Magnetic properties including vortex structures and related phenomena(for vortices, magnetic bubbles, and magnetic domain structure, see 75.70.Kw)
• 74.25.Sv: Critical currents

• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 114
• Issue: 1
• Pages: 99-106

Dates

published

2008-07

received

2007-11-06

Contributors

author

W. Woch

• Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, al. Mickiewicza 30, PL-30-059, Kraków, Poland

author

R. Zalecki

• Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, al. Mickiewicza 30, PL-30-059, Kraków, Poland

author

A. Kołodziejczyk

• Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, al. Mickiewicza 30, PL-30-059, Kraków, Poland

author

O. Heiml

• Institute for Chemical Technology of Inorganic Materials, Johannes Kepler University, A-4040 Linz, Austria

author

H. Sudra

• Institute for Chemical Technology of Inorganic Materials, Johannes Kepler University, A-4040 Linz, Austria

author

G. Gritzner

• 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

Identifiers

DOI

10.12693/APhysPolA.114.99