Pre-Transition Phenomena During Phase Transition in Potassium Carbonate

Molecular relaxation processes in potassium carbonate (K 2 CO 3 ) are investigated using Raman-scattering spectroscopy. It is found that the first-order phase transition is temperature-expanded, and the pre-transition phenomena are observed in crystalline K 2 CO 3 . The paper gives theoretical groun...

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Bibliographic Details
Published inRussian physics journal Vol. 62; no. 12; pp. 2264 - 2269
Main Authors Aliev, A. R., Akhmedov, I. R., Kakagasanov, M. G., Aliev, Z. A., Akhmedov, S. A.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.04.2020
Springer
Springer Nature B.V
Subjects
Alloys
Carbonates
Condensed Matter Physics
Hadrons
Heavy Ions
Lasers
Mathematical and Computational Physics
Molecular relaxation
Nuclear Physics
Optical Devices
Optics
Phase transitions
Photonics
Physics
Physics and Astronomy
Potash
Potassium
Potassium carbonate
Raman spectroscopy
Theoretical
pre-transition
molecular spectroscopy
Raman spectroscopy
carbonates
molecular relaxation
ion crystals
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Summary:Molecular relaxation processes in potassium carbonate (K 2 CO 3 ) are investigated using Raman-scattering spectroscopy. It is found that the first-order phase transition is temperature-expanded, and the pre-transition phenomena are observed in crystalline K 2 CO 3 . The paper gives theoretical grounds for pre-transition phenomena using the theoretical model of tunneling.
ISSN:1064-8887
1573-9228
DOI:10.1007/s11182-020-01975-y