The Irreversibility Fields of (Tl0.5Pb0.5)(Sr0.85Ba0.15)2Ca2Cu3Oz Film on Polished Silver Substrate
Sprache des Titels:
Englisch
Original Kurzfassung:
Superconducting (Tl0.5Pb0.5)(Sr0.85Ba0.15)2Ca2Cu3Oz-d was prepared on a highly polished, untextured silver substrate. A superconducting transition temperature (Tc,50%) of 114: +- 0.3 K was obtained from the re-
sistance versus temperature measurements for different applied ac currents.
The density of the critical current measured by transport method was found to be 11.4 x 103 A/cm2 at 77 K in the self field. This value is smaller than the value calculated from ac susceptibility data: 53 x 103 A/cm2 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.
Sprache der Kurzfassung:
Deutsch
Englische Kurzfassung:
Superconducting (Tl0.5Pb0.5)(Sr0.85Ba0.15)2Ca2Cu3Oz-d was prepared on a highly polished, untextured silver substrate. A superconducting transition temperature (Tc,50%) of 114: +- 0.3 K was obtained from the re-
sistance versus temperature measurements for different applied ac currents.
The density of the critical current measured by transport method was found to be 11.4 x 103 A/cm2 at 77 K in the self field. This value is smaller than the value calculated from ac susceptibility data: 53 x 103 A/cm2 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.
Journal:
Acta Physica Polonica A
Volume:
111
Number:
5
Seitenreferenz:
737 - 743
Erscheinungsjahr:
2007
ISSN:
1898-794X
Anzahl der Seiten:
7
Notiz zur Publikation:
The Irreversibility Fields of (Tl0.5Pb0.5)(Sr0.85Ba0.15)2Ca2Cu3Oz Film on Polished Silver Substrate
W.M. Woch, R. Zalecki, A. Kołodziejczyk, C. Deinhofer and G. Gritzner
Acta Phys. Polonica A 111 (2007) 737 – 743
Forschungs-