Translational Twins and Extraordinary Classification of Divalent Nitrates

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dc.contributor.authorKuznetsova, O. Ya.en
dc.contributor.authorKolomoets, A. G.en
dc.contributor.authorShkola, O. V.en
dc.contributor.authorLisina, L. O.en
dc.date.accessioned2025-11-04T11:18:56Z
dc.date.available2025-11-04T11:18:56Z
dc.date.issued2025
dc.description.abstractSymmetry aspects of Pm3 → Pa3 and Pm3 → P213 phase transitions in Barium, Strontium and Lead nitrates are considered. It is noted that the Pm3 → Pa3 phase transition is proper for crystal class called nonferroics. The characteristic features of nonferroics are given. It has been shown that divalent nitrates have these features. The Pm3 → P213 phase transition is classified as a phase transition characteristic of second-order ferroics. Thus, it is concluded that divalent nitrates are second-order ferroics and nonferroics at the same time. It was reported that according to the classification of higher-order ferroics, a spontaneous thermodynamic quantity described by a third-rank tensor should arise in the P213 phase. Such a tensor could be a tensor of piezoelectric coefficients, but in the P213 phase we were unable to detect the piezoelectric effect. It was suggested that in the P213 phase piezoelectric charges are localized on the walls of translational twins (domains), where they can be neutralized. Such domains arise as a result of the Pm3 → Pa3 phase transition. They were visualized by chemical etching. The temperature dependences of dielectric permeance in high-temperature region were also investigated. Small anomalies of the dielectric permeance were fond in the vicinity of the Pm3 → Pa3 phase transition for all tree compounds. It is noted that such anomalies are one of the signs of translational phase transitions.en
dc.identifier.citationKolomoets A. G., Shkola O. V., Lisina L. O., Kuznetsova O. Ya. (2025). Translational Twins and Extraordinary Classification of Divalent Nitrates // Journal of Nano- and Electronic Physics. Vol. 17, No 2. P. 02009-1–02009-4.en
dc.identifier.uriDOI: 10.21272/jnep.17(2).02009
dc.identifier.urihttps://dspace.bdpu.org.ua/handle/123456789/5398
dc.language.isoenen
dc.publisherJournal of Nano- and Electronic Physics : Сумський державний університетen
dc.subjectphase transitions, divalent nitratesen
dc.subjectdivalent nitratesen
dc.subjectferroicsen
dc.subjectnonferroicsen
dc.subjectdomainsen
dc.subjectchemical etchingen
dc.subjectdielectric permeanceen
dc.titleTranslational Twins and Extraordinary Classification of Divalent Nitratesen
dc.title.alternativeТрансляційні двійники та незвичайна класифікація нітратів двовалентних елементівuk
dc.typeArticleen
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