Contents of Journal of Thermoelectricity, No.4, 1995
Yu.G.Gurevich, G.N.Logvinov, O.Yu.Titov. Physics of Thermal Electromotive Force in the Monopolar Isotrope Semiconductors.
The paper is review of contemporary theoretical investigation of Seebeck effect origination in isotropic semiconductors.
V.A.Demchenko. Correlation Between Superconducting Transition Temperature and Thermodynamically Equilibrium Thermoelectric Coefficient Value of HTSC Metal Oxides.
Literary analysis of original sources including the information about superconducting transition temperature and thermoelectric coefficient values at room temperature has been used as the method of data collection for all the classes of HTSC oxides. Mathematical and statistical analysis of collected data indicates the existence of correlation between superconducting transition temperature and thermal EMF value at room temperature for all the classes of superconducting oxides. The above correlation, satisfactorily described by exponent, is adequate for linking of all superconductor parameters with thermoelectric phenomena. On the part of' thermal effects there are no restrictions on the growth of superconducting transition temperature. Key words: superconducting oxides, superconducting transition temperature, thermal EMF , empirical data, literary analysis, correlation.
I.I.Fishchuk, N.D.Marchuk. Thermoelectric, Thermomagnetic and Galvanomagnetic Phenomena in Randomly Inhomogeneous and Polycrystal Semiconductors.
The theory of thermomagnetic phenomena in randomly inhomogeneous media and AC galvanomagnetic properties in polycrystalline semiconductors are developed. The effective-medium theory in the case of the second power on a magnetic field approximation is used. Calculations are carried out for systems, consisting of random high- and low-conducting components and for systems, consisting of randomly oriented anisotropic crystallites.
A.A.Ashcheulov. On the Possibility of Parametric Control of Anisotropic Thermoelements Using the Effect of Thermal Conduction Anisotropy.
The possibility of parametric control of anisotropic thermocouples using the effect of thermal conduction anisotropy has been considered. Conditions have been determined and corresponding thermocouple optimization has been made. The thermoEMF and the efficiency in this case have been shown to increase.
U.O.Vanchura. Correlation Relationships of Superconducting Junction Temperature and Thermoelectric Properties in the High-temperature Superconducting Ceramics.
To find out possible Tc and an correlations the Tc and an values of HTSC ceramics of various classes have been systematized on the basis of literary source analysis sufficient for statistical-estimates.
V.A.Demchenko. Correlation Between Superconducting Transition Temperature and Thermoelectric Coefficient of HTSC Metal Oxides.
The present paper was caused by the necessity to know the relation of superconducting transition temperature to thermal EMF of superconducting metal oxides, which is adequate for using transition temperature to determine all the micro and macroscopic superconductor parameters when studying thermoelectric phenomena in these materials. Based in the results of empirical material literary analysis a correlation has been established between superconducting transition temperature and thermodynamically equilibrium thermoelectric coefficient at room temperature of HTSC metal oxides. Analysis of the resulting correlation has proved the existence of six steps, about 22 K wide, of superconducting metal oxide homologous series, divided by forbidden gaps, of order 3 K wide, of superconducting transition temperature. Forbidden gaps in temperature axis of superconducting transition are convenient to be used for approbation of models that claim to account for superconductivity of metal oxides. Key words: HTSC, literary analysis, superconducting transition temperature, thermal EMF, correlation.
N.V.Gavrilyuk, B.N.Demchuk, N.S.Petrenko, Yu.S.Khmelevskaya. Microcalorimeter for Chemical Power Sources.
There is a wide group of control instruments arid electronic devices using chemical power sources (CPS) as the only power supply. The advent and use of chemical current sources with improved parameters based on Li compounds make it a relevant task to control their quality which is mainly determined by their energy capacity. The existing methods of energy capacity determination by current measurement in the load result in the discharge of sources, hence the necessity to assess CCS quality by more effective methods. For this purpose a microcalorimetric system has been developed. It consists of a multi-cell microcalorimeter proper with removable thermal blocks for CCS of three standard sizes and a control block providing measurement and processing of signals from the calorimetric cells and the required thermal block temperature settings.
Information on the Activity of the International Thermoelectric Academy in 1995.