Frolov V. Temperature features of electro-physical properties of Sn, metal-oxide ceramics YBaCuO, BiSrPbCaCuO and their boundaries with Au, Ag, In, Pb

Object: processes and mechanisms that determine the charge transfer in ceramic YBaCuO, BiSrPbCaCuO, interfaces YBaCuO (BiSrPbCaCuO) / Au (Ag, In, Pb) and Sn in different structural states. The purpose: determination of the relationship of temperature peculiarities of electro-physical characteristics of ceramic metal oxide combinations YBaCuO, BiSrPbCaCuO, interfaces YBaCuO / Me, ViSrPbCaCuO / Me (Me = Au, Ag, In, Pb) and Sn in monocrystalline and quenched from superheated molten state, the structural and electronic transformations in the temperature range from helium to ~ 470K. Methods: measuring of electrical resistivity and thermoEMF, creep strain rate measurement in mode of constant plastic flow, known theoretical concepts relatively interfaces "semiconductor / normal metal". Results: it is first shown that the temperature dependence of the electrical resistance RC of the interface of MOC / Me, where MOC = YBaCuO (BiSrPbCaCuO), Me = Au (Ag, In, Pb), has in the range 4.2 ... 300 K semiconductor character and contains anomalies that correlate with anomalies of structural and electronic properties of YBaCuO and BiSrPbCaCuO. The phenomenological model of the interface MOC / Me, in which anomalies of RC are depended with anomalies of density of nfh of MOC free charge carriers. Field of application: electrophysics, physics of phase transitions