Searching for Order Parameter of Low-temperature Phase Transitions in Divalent Nitrates

Автор(ы) A.G. Kolomoets, S.L. Khrypko
Принадлежность

Zaporizhia National University’s Engineering Institute, 226, Soborny Ave., 69006 Zaporizhia, Ukraine

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Выпуск Том 11, Год 2019, Номер 4
Даты Получено 10 июня 2019; в отредактированной форме 04 августа 2019; опубликовано online 22 августа 2019
Ссылка A.G. Kolomoets, S.L. Khrypko, J. Nano- Electron. Phys. 11 № 4, 04037 (2019)
DOI https://doi.org/10.21272/jnep.11(4).04037
PACS Number(s) 42.70.Mp, 77.84. – s
Ключевые слова Phase transitions (2) , Divalent nitrates, Order parameter (3) , Quadratic susceptibility, Signal intensity of second harmonic generation.
Аннотация

The paper is devoted to the searching for order parameter of low-temperature phase transitions in divalent nitrates Pb(NO3)2, Sr(NO3)2 and Ba(NO3)2. According to the curves of temperature dependencies of the quadratic susceptibility tensor component c14, the conclusion is made that the low-temperature phase transitions in divalent nitrates are the phase transitions of the first order with the features of the second order. The mechanisms of the low-temperature phase transitions in divalent nitrates are discussed from this perspective.

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