The Irreversibility Fields of (Tl_{0.5}Pb_{0.5}) (Sr_{0.85}Ba_{0.15})_2Ca_2Cu_3O_z Film on Polished Silver Substrate

• Authors: W. Woch , R. Zalecki , A. Kołodziejczyk , C. Deinhofer , G. Gritzner
• Languages of publication: EN

Abstracts

EN

Superconducting (Tl_{0.5}Pb_{0.5})(Sr_{0.85}Ba_{0.15})_2Ca_2Cu_3O_z film was prepared on a highly polished, untextured silver substrate. A superconducting transition temperature (T_{c,50%}) of 114.7±0.3 K was obtained from the resistance versus temperature measurements for different applied ac currents. The density of the critical current measured by transport method was found to be 11.4×10^3 A/cm^2 at 77 K in the self field. This value is smaller than the value calculated from ac susceptibility data: 53×10^3 A/cm^2 at 77 K. The magnetical broadening of the resistivity transition to the superconducting state was observed. The irreversibility fields of the thallium based film were obtained from magnetoresistive measurements for both parallel to the c-axis and parallel to the $ab$ plane showing the anisotropy according to the magnetic field direction. The irreversibility fields as a function of temperature were successfully fitted by the power law.

Keywords

EN

74.25.Sv; 74.78.Bz; 74.62.Yb

Discipline

• 74.62.Yb: Other effects
• 74.25.Sv: Critical currents

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 111
• Issue: 5
• Pages: 737-743

Dates

published

2007-05

Contributors

author

W. Woch

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

author

R. Zalecki

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

author

A. Kołodziejczyk

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

author

C. Deinhofer

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

author

G. Gritzner

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

References

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Identifiers

DOI

10.12693/APhysPolA.111.737