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Specific heat and resistivity of the high-Tc superconductor BiCaSrCu2Ox from 2.5 to 300 K

1989; Elsevier BV; Volume: 71; Issue: 3 Linguagem: Inglês

10.1016/0038-1098(89)90399-2

1879-2766

J. Bischof, A. Belling, V. Plecháček, H. Hejdová, Zanna Trejbalová, J. Hřebík,

Superconductivity in MgB2 and Alloys

For two samples of the sintered superconducting oxides BiSrCaCuO with the stoichiometry 1112 the specific heat and electrical resistance were measured. The value of the Debye temperature of ΘD = (230 ± 5) K was obtained for the both samples. T - linear term in the specific heat function cp (T) was not observed in the low temperature range. T - term was essentially changed by adding Pb into the compound. Sommerfeld's constant γ reaches the high value γ = 73 mJ mole-1 K-2.