Effect of elastic stresses on the thermoelectric properties of Pb1−x GexTe epitaxial layers

Autor: Vitalii Sichkovskyi, Witold Dobrowolski, E.I. Slynko, R. Yakiela, V. N. Vodop’yanov, G. V. Lashkarev, A. P. Bakhtinov, M. V. Radchenko
Rok vydání: 2006
Předmět:
Zdroj: Physics of the Solid State. 48:1342-1345
ISSN: 1090-6460
1063-7834
Popis: The temperature dependence of the thermopower of Pb1−x GexTe (x = 0.01−0.05) epitaxial films grown on BaF2(111) substrates was measured. The temperature of the ferroelectric phase transition was found to disagree with that obtained for bulk single crystals of the same composition. This disagreement was explained as resulting from the effect of elastic stresses arising in the crystal lattice of the Pb1−x GexTe compound due to the difference between the thermal expansion coefficients of the film and the substrate during cooling of the layers from the growth temperature to the temperature of measurement.
Databáze: OpenAIRE