Dielectric and Repolarization Properties of Nanocomposites Based on Porous Matrix with Sodium Nitrite

Rogazinskaya, O. V.; Сидоркин, А. С.; Popravko, N. G.; Milovidova, S. D.; Набережнов, А. А.; Grokhotova, E. V.

doi:10.1080/00150193.2014.949146

Cited by 8 publications

(4 citation statements)

References 8 publications

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“…2a for NCC+NaNO2 composite, there is only an increase of dielectric constant ε observed with increasing temperature without the presence of the peak typical for single crystal of NaNO2 (+164 ºC). This behavior was also observed for the composite based on nanoporous Al2O3 with NaNO2 inclusions [14,15]. The values of dielectric constant in the studied composite unlike those for the composite NCC+TGS are comparable to other The character of temperature dependences of dielectric loss tangent (Fig.…”

Section: Resultssupporting

confidence: 76%

“…The values of dielectric constant in the studied composite unlike those for the composite NCC+TGS are comparable to other The character of temperature dependences of dielectric loss tangent (Fig. 2b) is different from those for Al2O3+NaNO2 composites [14,16], in which maxima of tgδ(T) were observed. In the case of NCC matrix, the values of ε and tgδ are quite small as compared to those for NCC+NaNO2 composite.…”

Section: Resultscontrasting

confidence: 43%

“…The phase transition to ferroelectric state occurs at ТС ≈ +164 ºС. Nanoparticles of sodium nitrite can be easily embedded into various matrices such as porous glass, aluminum oxide, SBA-15 or opal [1,6,[13][14][15][16][17] with pores at nanoscale level due to their high wettability.…”

Section: Materials Preparation and Experimental Methodsmentioning

confidence: 99%

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Dielectric Phenomena at Phase Transition Temperature of Nanocomposites Based on Ferroelectrics and Nanocrystalline Cellulose Acetobacter Xylinum

Thuong¹,

Dung²,

Hương³

et al. 2020

jst-iuh

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Dielectric phenomena at phase transition temperature for nanoparticles of triglycine sulfate (TGS) and Sodium Nitrite (NaNO2) embedded into the pores of bacterial nanocrystalline cellulose Acetobacter Xylinum have been investigated. It was shown that the phase transition temperature of these ferroelectrics at nanoscale level strongly changes as compared to those of the massif ferroelectrics: for hydrogen-containing triglycine sulfate nanoparticles the phase transition temperature was shifted to higher temperatures and for non-hydrogen-containing Sodium Nitrite nanoparticles – lower temperatures. The obtained results are explained by knowledge of size effects and the interaction between the matrix and ferroelectric inclusions through hydrogen-bond system as well as dipole-dipole interaction between TGS nanoparticles using a mathematical expansion based on Landau-Ginzburg-Devonshire theory.

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Section: Resultssupporting

confidence: 76%

Section: Resultscontrasting

confidence: 43%

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Dielectric Phenomena at Phase Transition Temperature of Nanocomposites Based on Ferroelectrics and Nanocrystalline Cellulose Acetobacter Xylinum

Thuong¹,

Dung²,

Hương³

et al. 2020

jst-iuh

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“…Identification of linkages between various characteristics and the structure of these materials will allow researchers to find new ways of controlling their parameters, which is essential for practical materials science. The changes in the dielectric constant, including the dispersion of the permittivity of ferroelectric composites, their piezoelectric and pyroelectric properties, have been considered in several pieces of research [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Depolarizing Fields and Screening Effects on Phase Transitions in Ferroelectric Composites

et al. 2018

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The temperature of the transition to the polar state in ferroelectric composites, representing spherical ferroelectric inclusions embedded in a dielectric matrix, under a depolarizing field effect is investigated. This temperature is determined both in the absence and presence of screening effects of the depolarizing field of the bound charges of spontaneous polarization at the inclusions surface. The absence case shows that the Curie point shift is determined by the ratio of the Curie constant of the ferroelectric inclusion to the permittivity of the matrix. Screening effects show that the transition temperature shift decreases through multiplying the value by a decreasing factor equal to the ratio of the screening length to the radius of the ferroelectric inclusion. Examples of the materials for the position of the Curie point on the temperature scale, largely determined by the tilting action of the depolarizing field and the compensating shielding effects, are given.

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Dielectric properties of ferroelectric nanocomposites of nanocrystalline cellulose and sodium nitrite

et al. 2019

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Dielectric and Repolarization Properties of Nanocomposites Based on Porous Matrix with Sodium Nitrite

Cited by 8 publications

References 8 publications

Dielectric Phenomena at Phase Transition Temperature of Nanocomposites Based on Ferroelectrics and Nanocrystalline Cellulose Acetobacter Xylinum

Dielectric Phenomena at Phase Transition Temperature of Nanocomposites Based on Ferroelectrics and Nanocrystalline Cellulose Acetobacter Xylinum

Influence of Depolarizing Fields and Screening Effects on Phase Transitions in Ferroelectric Composites

Dielectric properties of ferroelectric nanocomposites of nanocrystalline cellulose and sodium nitrite

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