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Nanosystems: Physics, Chemistry, Mathematics, 2019, Volume 10, Issue 2, Pages 158–163
DOI: https://doi.org/10.17586/2220-8054-2019-10-2-158-163
(Mi nano428)
 

This article is cited in 1 scientific paper (total in 1 paper)

CHEMISTRY AND MATERIAL SCIENCE

Thermal expansion coefficients of NaNO$_2$ embedded into the nanoporous glasses

O. A. Alekseevaa, A. A. Naberezhnovb, D. Yu. Chernyshovc, A. V. Fokinb, A. A. Sysoevab, E. Rysiakiewicz-Pasekd

a Peter the Great St. Petersburg Polytechnic University, St. Petersburg, 195251 Russia
b Ioffe Institute
c European Synchrotron Radiation Facility
d Department of Experimental Physics, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland
Abstract: The temperature evolution of the crystal structure of sodium nitrite nanoparticles has been studied with heating and cooling using synchrotron radiation diffraction. Nanocomposites have been prepared by embedding melted NaNO$_2$ into the pores of the glasses, average diameters of the pores were 20 nm and 46 nm. Analysis of obtained diffraction patterns has revealed significant difference of the coefficients of thermal expansion (contraction) on heating and on cooling between nanostructured and massive sodium nitrite in the temperature range corresponding to the paraelectric phase. It is confirmed that in these nanocomposites the phase transition from the ferroelectric to paraelectric phase remains the first-order phase transition. Temperature hysteresis of this phase transition is about 10 K.
Keywords: ferroelectrics, phase transitions, nanocomposite materials, synchrotron radiation diffraction, ferroelectrics, phase transitions, nanocomposite materials, synchrotron radiation diffraction.
Funding agency Grant number
Russian Foundation for Basic Research 19-02-00760
Ministry of Education and Science of the Russian Federation 3.1150.2017/4.6
This work was supported by the Russian Foundation for Basic Researches under Grant number 19-02-00760. In Peter the Great St. Petersburg Polytechnic University (SPbPU) the measurements were partly supported by RF Ministry of Education and Science (grant 3.1150.2017/4.6).
Received: 11.02.2019
Revised: 21.02.2019
Bibliographic databases:
Document Type: Article
PACS: 61.05.C; 65.40.De; 68.65.-k; 67.30.ht
Language: English
Citation: O. A. Alekseeva, A. A. Naberezhnov, D. Yu. Chernyshov, A. V. Fokin, A. A. Sysoeva, E. Rysiakiewicz-Pasek, “Thermal expansion coefficients of NaNO$_2$ embedded into the nanoporous glasses”, Nanosystems: Physics, Chemistry, Mathematics, 10:2 (2019), 158–163
Citation in format AMSBIB
\Bibitem{AleNabChe19}
\by O.~A.~Alekseeva, A.~A.~Naberezhnov, D.~Yu.~Chernyshov, A.~V.~Fokin, A.~A.~Sysoeva, E.~Rysiakiewicz-Pasek
\paper Thermal expansion coefficients of NaNO$_2$ embedded into the nanoporous glasses
\jour Nanosystems: Physics, Chemistry, Mathematics
\yr 2019
\vol 10
\issue 2
\pages 158--163
\mathnet{http://mi.mathnet.ru/nano428}
\crossref{https://doi.org/10.17586/2220-8054-2019-10-2-158-163}
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\elib{https://elibrary.ru/item.asp?id=37417500}
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