NMR Studies of a Nanocomposite Based on Molecular Ferroelectric Diisopropylammonium Bromide

Uskova, N. I.; Charnaya, E. V.; Podorozhkin, D. Yu.; Барышников, С. В.; Milinskiy, A. Yu.; Егорова, И. В.; Nefedov, D. Yu.

doi:10.1007/s00723-019-01168-y

Cited by 4 publications

(1 citation statement)

References 28 publications

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“…В связи с перспективами практического использования новых органических сегнетоэлектриков, значительный интерес вызывают исследования влияния понижения размеров на их свойства. Фазовые переходы в наноструктурированных сегнетоэлектриках DIPAС и DIPAB изучались в [5][6][7][8]. Были обнаружены сдвиги температур и изменение последовательности сегнетоэлектрических фазовых переходов.…”

Section: Introductionunclassified

Влияние Наноконфайнмента На Кинетику Фазовых Переходов В Органическом Сегнетоэлектрике DIPAI

Милинский¹,

Барышников²,

Чарная³

et al. 2020

Физика Твердого Тела

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The results of studying the linear and nonlinear dielectric properties of a new organic ferroelectric diisopropylammonium iodide (DIPAI), embedded in porous alumina films, in comparison with bulk DIPAI, are presented. It was found, for DIPAI in pores 300 and 60 nm in diameter the ferroelectric phase is formed in the heating and cooling modes in the temperature interval between two structural phase transitions above room temperature. No noticeable temperature hysteresis was observed for both phase transitions. It was shown that the boundaries of the intermediate polar phase for nanostructured DIPAI shift to low temperatures with decreasing pore size. For bulk DIPAI, two structural transitions were revealed during heating with the formation of an intermediate polar phase and only one transition during cooling, below which ferroelectricity occurred. The temperature of this transition was much lower than the corresponding temperature during heating. It is assumed that the observed differences in phase transitions for DIPAI in pores and bulk DIPAI are associated with acceleration of the phase transitions kinetics under conditions of nanoconfinement.

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Section: Introductionunclassified

Влияние Наноконфайнмента На Кинетику Фазовых Переходов В Органическом Сегнетоэлектрике DIPAI

Милинский¹,

Барышников²,

Чарная³

et al. 2020

Физика Твердого Тела

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Dielectric Properties of Diisopropylammonium Chloride Embedded Into Porous Glass

2021

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Dielectric properties of ferroelectric diisopropylammonium bromide embedded in porous glass

Milinskiy

Барышников

Charnaya³

et al. 2020

J. Phys.: Conf. Ser.

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The results of studying the dielectric constant σ’ and the third harmonic coefficient γ3ω of a new organic ferroelectric diisopropylammonium bromide (C6H16NBr, DIPAB), embedded in porous glasses with an average pore size of 100 nm are presented. Diffusion and shifting of the phase transition to low temperatures by 5 K were detected in comparison with bulk DIPAB. A decrease in the phase transition temperature in nanocomposites with DIPAB nanoparticles is qualitatively consistent with theoretical models of the size effects on the structural phase transition.

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NMR Studies of a Nanocomposite Based on Molecular Ferroelectric Diisopropylammonium Bromide

Cited by 4 publications

References 28 publications

Влияние Наноконфайнмента На Кинетику Фазовых Переходов В Органическом Сегнетоэлектрике DIPAI

Влияние Наноконфайнмента На Кинетику Фазовых Переходов В Органическом Сегнетоэлектрике DIPAI

Dielectric Properties of Diisopropylammonium Chloride Embedded Into Porous Glass

Dielectric properties of ferroelectric diisopropylammonium bromide embedded in porous glass

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