Open AccessCrystal structure transformations during phase transitions in homologues of n-alkanes: C23H48, C24H50, C25H52 as revealed by FT-IR spectroscopy
Author(s) -
S A Gureva,
V. A. Marikhin,
L. P. Myasnikova,
Б. З. Волчек,
D. A. Medvedeva
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1400/5/055040
Subject(s) - phase transition , crystallography , kinetics , phase (matter) , crystal (programming language) , crystal structure , absorption spectroscopy , atmospheric temperature range , materials science , chemistry , physics , thermodynamics , optics , organic chemistry , quantum mechanics , computer science , programming language
The dependence of the IR absorption spectrum on the type of symmetry of crystallographic cells allowed us to investigate the kinetics of phase transitions. It is confirmed that the first order solid-phase transition develops by a heterogeneous mechanism in a narrow temperature range ΔT ⩾ 1 K.