Preparation and Electrical Properties of 107K-BiSrCaCuO Superconducting Thin Films
BiSrCaCuO superconducting oxide thin films with a zero-resistance temperature of 107K were prepared on MgO(100) substrates by the sequential deposition technique of Bi, SrF2, CaF2 and Cu, followed by annealing in O2 . The temperature dependence of the Hall coefficient and resistivity were measured. The Hall coefficient increased as the temperature decreased. The carrier in the film was hole-like. The temperature dependence of the inverse Hall coefficient was linear and the extrapolation to zero degrees passed through the origin. In addition, the extrapolation of the normal resistance to zero degrees always intersected the resistance axis on the negative side.
KeywordsMagnetic Susceptibility Thin Sheet Hall Coefficient Annealed Film Normal Resistance
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