Search results

Sort By:

Limit search:

Specific Heat and Magnetoresistance of Y-, Tl- and Bi-Type High-Temperature Superconductors

100%

Zalecki R., Kozłowski A., Kołodziejczyk A., Gritzner G., Mair M.

Acta Physica Polonica A

1997

vol. 91

issue 2

431-434

Specific heat of polycrystalline DyBa_{2}Cu_{3}O_{7} and Tl_{0.58}Pb _{0.42}Sr_{1.6}Ba_{0.4}Ca_{2}Cu_{3}O_{9} samples, as well as the single crystal of Bi_{2}Sr_{2}CaCu_{2}O_{8} have been measured within the temperature interval from 50 to 250 K. For Dy- and Tl-specimens the pronounced jump in specific heat and apparent contribution from Gaussian fluctuations of superconducting order parameter close to T_{c} have been observed. In contrary, for Bi-specimen only a rounded maximum within a broad interval around T_{c} has been detected. Magnetoresistance measurements as a function of temperature just below T_{c} have been carried out for Dy- and Tl-samples and the slopes of upper critical fields have been determined. The data have been analysed within a frame of Ginzburg-Landau-Abrikosov- Gorkov theory with additional Gaussian-like fluctuation term. The electronic specific heat coefficients γ, and the coherence length χ have been obtained.

Refine search results

1 Acta Physica Polonica A

1 1997

1 Gritzner G.

1 Kozłowski A.

1 Kołodziejczyk A.

1 Mair M.

1 Zalecki R.

Search results

Specific Heat and Magnetoresistance of Y-, Tl- and Bi-Type High-Temperature Superconductors