Mechanism of ferroelectric phase transition in ultra-dispersed sodium nitrite particles

A mechanism of the ferroelectric phase transition in nanocomposite materials based on porous glasses with the average pore diameter of 7 nm with embedded sodium nitrite has been discussed. The results of analysis of temperature evolution of structure, thermal vibrations of ions, and interatomic dist...

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Bibliographic Details
Published inFerroelectrics Vol. 575; no. 1; pp. 75 - 83
Main Authors Naberezhnov, A. A., Vakhrushev, S. B., Kumzerov, Yu. A., Fokin, A. V.
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 12.05.2021
Taylor & Francis Ltd
Subjects
Ferroelectric materials
Ferroelectric nanocomposites
Ferroelectricity
Nanocomposites
Nanoparticles
phase transition
Phase transitions
porous glasses
Porous materials
size effect
Sodium
Sodium nitrite
Temperature
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Summary:A mechanism of the ferroelectric phase transition in nanocomposite materials based on porous glasses with the average pore diameter of 7 nm with embedded sodium nitrite has been discussed. The results of analysis of temperature evolution of structure, thermal vibrations of ions, and interatomic distances are presented for these nanocomposites. It is shown that the thermal vibrations play the important role in a modification of ferroelectric phase transition from the first order, characterizing bulk compound, to the second order in ultra-dispersed sodium nitrite nanoparticles.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2021.1888229