Badanie właściwości termoelektrycznych roztworu stałego $Na_{1-x}Li_xNbO_3$ (dla x = 0 – 0,06)

Abstract

The article presents theoretical facts of thermoelectric phenomena (i.e. Joule effect, Seebeck effect, Thomson effect and Peltier effect). Lead-free $Na_{1-x}Li_xNbO_3$ ceramics (x = 0 – 0,06) were synthesized by a conventional mixed-oxide technique. The microstructure study showed a dense structure, in good agreement with that of 94–96% relative density determined by Archimedes method. The results of thermoelectric studies using the Seebeck effect for the $Na_{1-x}Li_xNbO_3$ solid solution (x = 0 – 0,06) were also presented in this paper. The experimental measurements of Seebeck effect showed that pure $NaNbO_3$ exhibits n-type of conductivity, whereas $Na_{1-x}Li_xNbO_3$ solid solutions exhibit p-type of conductivity.