Rozwój elektroniki jest, uwarunkowany a niekiedy stymulowany rozwojem technologii nowych materiałów. Do jednej z ważniejszych grup materiałów stosowanych w elektronice należą związki o strukturze perowskitu [1.1]. Odznaczają ...

The temperature changes of electrical conductivity, as well as changes of the Seebeck coefficient and the electrical permeability of sodium niobate $NaNbO_3$, have been investigated. The obtained data were used to define ...

Temperature changes of the electrical conductivity and of the Seebeck coefficient for the ceramics $NaNbO_3$, and $NaNbO_3$ + 0.2% mol $La_2O_3$, have been investigated. The obtained results have been used to define the ...

To evaluate the possibilities of using sodium niobate in thermo-electric converters transforming heat energy into electric energy, the temperature changes of electric conductivity, of Seebeck coefficient and of the thermal ...

The influence of the admixture of 3% $PbO$, 1% $La_2O_3$ and 1% $Nb_2O_5$ on the electric properties (electric permeability, electric conductivity, Seebeck coeficient and current - voltage, current - time characteristics) ...

A design of a new quartz thermostate is described. It controls: 1) The temperature of the sample from ambient temperature to 1270 K, 2) The pressure of the atmospheric air or other gases within the range from $133,3°10^{-6}$ ...

The temperature changes of current - voltage and current - time characteristics having been investigated, data are used to define the type of conductivity and to determine the activation energy of the charge carriers. ...

Measurements of electrical conductivity of nonstoichiometric $NaNbO_3$ were made in the air atmosphere under normal and reduced pressure. It was stated that the value of electrical conductivity is strongly effected by ...