Dielectric relaxation in ferroelectric composite nanocrystalline cellulose – triglycine sulfate the frequency range from 103 to 106 Hz a weak measuring field (1 V·cm−1) room temperature phase transition of these composites (+54°C) has been investigated. Two series nanocomposites were used: first one with perpendicular directions nanochannels respect sample surface and second parallel. The typical for single-crystal maximum imaginary part dielectric permittivity at frequencies (105 Hz) case...

This paper is devoted to studies of properties composites based on nanocrystalline cellulose and triglycine sulfate. The presence one or two peaks in the temperature dependence dielectric permittivity was revealed their shift higher temperatures as compared with bulk TGS 54°C 100°C detected, respectively. An explanation results related appearance internal bias fields nanocomposites.

Influence of the humidity on dielectric properties composites nanocrystalline cellulose – triglycine sulfate in weak measuring field (1 V·cm−1) was investigated from room temperature to +120°C frequency range 10−3 103 Hz. A comparative analysis experimental results before and after heat treatment samples made. It shown that an additional peak at about +20°C dependence constant a low-frequency maximum 1.6 mHz loss are observed. They conditioned by evaporation water sample surface beginning...

Dielectric dispersion for a composite based on nanocrystalline cellulose with triglycine sulfate in the frequency range from 1 mHz to kHz at different temperatures room temperature phase transition of (∼ +54°C) weak measuring field (1 V·cm−1) was investigated. The obtained results showed presence two relaxation regions: characteristic bulk linear dielectric (10 Hz – kHz) associated irreversible motion domain walls and significant region lower frequencies 10 related Maxwell-Wagner-Sillars...

Dielectric properties of composites consisting nanoporous aluminium oxide Al2O3 or glass SiO2 with inclusions the ferroelectric triglycine sulphate (TGS) are investigated in present work. Our investigations enable us to assume presence state these materials.

The structure and properties of nanocomposite structures based on porous matrix with a triglycine sulfate inclusions have been investigated. Interrelation between the behavior dielectric parameters (dielectric susceptibility, Curie temperature) structural features composite has established. It is shown that changing size ferroelectric their relative positions may significant effect phase transition temperature.

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

In this study, a novel ferroelectric composite consisting of triglycine sulfate (TGS) and cellulose nanoparticles (NCCP) prepared from waste cotton was synthesized characterized by X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) Zetasizer analyzer. The study on electrophysical properties the were performed 25 to 120 ˚C under weak electric field with an amplitude 1 V/cm at low infra-low frequencies (10−3 103 Hz) different weight composition ratios. obtained results...

Dielectric properties of the composite obtained on basis nanodispersed silica hydrosol and triglycine sulfate were investigated. Ferroelectric phase was shown to be extended temperatures higher than + 100 °C in nanocomposites with SiO2 particles size about 6 nm only temperature up 60 under increase 9·103 nm.

The dielectric properties of composite materials prepared by the embedding ferroelectrics potassium dihydrogen phosphate (KDP), cesium dihydrophosphate (CDP), as well antiferroelectric ammonium (ADP) into porous glass matrices with an average size through pores 7, 46, and 320 nm have been studied. It was found that increase occurred in phase transitions temperature (TC) for embedded particles comparison corresponding bulk materials. Some possible mechanisms influence “restricted geometry” on...

Dielectric properties and IR spectra have been studied for ferroelectric nanocomposites: porous glass–NaNO2 Al2O3–NaNO2. The effect of depolarization field on dielectric phase transition has analyzed. role the "matrix-embedded ferroelectric" interface is discussed.

We have studied the dynamical permittivity in ferroelectric nanometricaly-thin films with 180° periodic domain structure, sandwiched between two paraelectric layers. The walls were assumed to interact an atmosphere of mobile defects that provides energy dissipation. resulting frequency-dependent demonstrates Debye-like relaxation behavior at ω∼104 Hz and a sharp collective resonance mode ω∼5·1011