Calorimetry of matrix-isolated sodium nitrite NaNO2
- Authors: Egorov V.M.1, Markov Y.F.1, Roginskii E.M.1, Stukova E.V.2
-
Affiliations:
- Ioffe Physical Technical Institute
- Amur State University
- Issue: Vol 42, No 11 (2016)
- Pages: 1114-1117
- Section: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/201969
- DOI: https://doi.org/10.1134/S106378501611016X
- ID: 201969
Cite item
Abstract
Differential scanning calorimetry has been used to carry out a high-precision study of sodium nitrite NaNO2 incorporated into different silicate nanoporous matrices. Heat-capacity maxima due to smeared ferroelectric phase transitions have been discovered. Characteristics (intensity, half-width, phase-transition temperature, etc.) of the maxima have been investigated. Heat-capacity maxima related to an incommensurable phase transition have been reliably identified. The maxima can be attributed to the formation of appropriate orientation of sodium-nitrite nanocrystals in matrix pores.
About the authors
V. M. Egorov
Ioffe Physical Technical Institute
Email: yu.markov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
Yu. F. Markov
Ioffe Physical Technical Institute
Author for correspondence.
Email: yu.markov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
E. M. Roginskii
Ioffe Physical Technical Institute
Email: yu.markov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
E. V. Stukova
Amur State University
Email: yu.markov@mail.ioffe.ru
Russian Federation, Blagoveshchensk, 675027