On the mechanism of phase transformation in Ag2Se

A differential thermal analysis Δ T y ( T ) in vacuum has been performed, and the temperature gradient Δ T x ( T ) along the Ag 2 Se sample during the transition α → β has been studied. It has been shown that the transitions α → α′ and β′ → β are displacive transitions and that the transition α′ → β...

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Bibliographic Details
Published in:Physics of the solid state 2010-10, Vol.52 (10), p.2164-2167
Main Authors: Aliev, F. F., Dzhafarov, M. B., Saddinova, A. A.
Format: Article
Language:English
Subjects:
Lattice Dynamics and Phase Transitions
Physics
Physics and Astronomy
Solid State Physics
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Summary:A differential thermal analysis Δ T y ( T ) in vacuum has been performed, and the temperature gradient Δ T x ( T ) along the Ag 2 Se sample during the transition α → β has been studied. It has been shown that the transitions α → α′ and β′ → β are displacive transitions and that the transition α′ → β′ is a reconstructive transition. It has been found that the temperature gradient along the sample during the transition α′ → β′ passes through a deep minimum due to a strong increase in the specific heat capacity.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783410100239