Superconducting Transition in Granular Bi-Sr-Ca-Cu-O Superconductors

• Authors: M Gazda , B Kusz , W Sadowski , S Stizza , R Natali , V Di Stasio
• Languages of publication: EN

Abstracts

EN

In this work we study the superconducting transition in the samples containing relatively small granules of high-T_c Bi-Sr-Ca-Cu-O superconductors. The samples were obtained by the glass-ceramic technology. Two-stage character of the superconducting transition was studied. Pairing transition temperature depends on the magnetic field. Coherence transition is very sensitive to the current flowing through the sample, magnetic field and the phase composition and microstructure of the sample. The analysis of superconducting transition by means of the logarithmic derivative of the fluctuation conductivity shows the mesoscopic granularity of the samples.

Keywords

EN

74.62.-c; 74.81.Bd; 74.72.Hs

Discipline

• 74.81.Bd: Granular, melt-textured, amorphous, and composite superconductors
• 74.62.-c: Transition temperature variations, phase diagrams

• Journal: Acta Physica Polonica A
• Year: 2006
• Volume: 109
• Issue: 4-5
• Pages: 485-491

Dates

published

2006-04

received

2005-09-25

Contributors

author

M Gazda

• Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, Narutowicza 11/12, 80-952 Gdańsk, Poland

author

B Kusz

• Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, Narutowicza 11/12, 80-952 Gdańsk, Poland

author

W Sadowski

• Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, Narutowicza 11/12, 80-952 Gdańsk, Poland

author

S Stizza

• Dipartimento di Matematica e Fisica, Università di Camerino, INFM, Italy

author

R Natali

• Dipartimento di Matematica e Fisica, Università di Camerino, INFM, Italy

author

V Di Stasio

• Dipartimento di Matematica e Fisica, Università di Camerino, INFM, Italy

References

• 1. Superconducting Glass-Ceramics in Bi-Sr-Ca-Cu-O: Fabrication and Its Application, Ed. Y. Abe, World Scientific, Singapore 1997
• 2. P. Pureur, R. Menegotto Costa, P. Rodrigues, Jr., J. Schaf, J.V. Kunzler, Phys. Rev. B, 47, 11420, 1993
• 3. M. Gazda, Physica C, 411, 170, 2004
• 4. X.Y. Lang, Q. Jiang, Solid State Commun., 134, 797, 2005
• 5. J. Roa-Rojas, R. Menegotto Costa, P. Pureur, P. Prieto, Phys. Rev. B, 61, 12457, 2003
• 6. B. vom Hedt, K. Westerholt, Physica C, 243, 389, 1995
• 7. R.J. Joshi, R.B. Hallock, J.A. Taylor, Phys. Rev. B, 55, 9107, 1997
• 8. A.R. Jurelo, J.V. Kunzler, J. Schaf, P. Pureur, J. Rosenblatt, Phys. Rev. B, 56, 14815, 1997
• 9. E. Granato, Physica C, 408-410, 505, 2004
• 10. F.W. Fabris, J. Roa-Rojas, P. Pureur, Physica C, 354, 304, 2001
• 11. A.R. Jurelo, I. Abrego Castillo, J. Roa-Rojas, L.M. Ferreira, L. Ghivelder, P. Pureur, P. Rodrigues Jr., Physica C, 311, 133, 1999

Identifiers

DOI

10.12693/APhysPolA.109.485