The Nature of Soft Mode and Ferroelectric Phase Transition in SbOxS1-xI and SbSexS1-xI Mixed Crystals.

Autor: AUDZIJONIS, A., ŽIGAS, L., GAIGALAS, G., PAULIKAS, V., ŽALTAUSKAS, R., Čerškus, A., Balnionis, D.
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Zdroj: Ferroelectrics Letters Section; 2004, Vol. 31 Issue 5/6, p113-118, 6p, 1 Chart
Abstrakt: The ferroelectric phase transition temperature has different dependence upon the mixture composition x in mixed SbOxS1-xI and SbSexS1-xl crystals. From dependence of potential energy V(z) upon normal coordinates of the Blu soft mode al a Sb site of SbOxS1-xI and SbSexS1-xI crystals we proved that main reason for the growth of TC in SbOxS1-xl crystals is that atomic formfactor fVI decrease with increasing x and decrease of TC in SbSexS1-xI crystals is caused by the increase of fVI with increasing x. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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