Low Temperature Physics: 38, 1058 (2012); https://doi.org/10.1063/1.4765095 (5 pages)
Fizika Nizkikh Temperatur: Volume 38, Number 11 (November 2012), p. 1340-1346    ( to contents , go back )

Transformation features in solid nitrous oxide

A. Drobyshev, A. Aldiyarov, E. Korshikov, D. Sokolov, and V. Kurnosov

Al-Faraby Kazakh National University, al-Farabi 71, Almaty 050038, Kazakhstan
E-mail: Andrei. Drobyshev@kaznu.kz
pos Анотація:

Received Jule 9, 2012

Abstract

The transformation features in cryocondensates of nitrous oxide were studied in the process of thermal cycling in the vicinity of the temperature T = 40 K. The research was aimed at figuring out the response of deformation and translational vibrational subsystems of the condensed nitrous oxide to these transformations. The temperature and the nature of thermally stimulated reactions in the films of nitrous oxide cryocondensates were determined. By measuring the vibrational spectra of the samples and by recording the changes in amplitude and position of the absorption bands characteristic of vibrations. Analysis of the IR spectra suggests that the transition from the amorphous state of nitrous oxide to the crystalline one is carried out in several stages, which account for the implementation of relaxation processes related to a particular type of vibrations of a nitrous oxide molecule. The difference in the temperatures of the transitions is determined by activation energies that are typical of this type of oscillation.

PACS: 61.50.–f Structure of crystals;
PACS: 78.30.–j IR and Raman spectroscopy;
PACS: 68.35.Rh Phasen transition and critical phenomena.

Key words: transformation, transition, resonance formes, IR spectra, nitrogen oxide, cryocrystal, thin films.

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