Dielectric and elastic responses of nanostructured sodium nitrite in a porous glass

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

“…The explanation of this anomaly for sodium nitrite-porous glass composite was proposed earlier in [7]. Because of a similar behavior of the dielectric properties, we can expand this explanation to the composites based on Al 2 O 3 .…”

Structural and ferroelectric properties of spray deposited sodium nitrite:poly(vinyl alcohol) composite films

“…35,36 Therefore the observed values of dissipation factor in the present films are reasonable. In general, the energy dissipation arises due to the resistive loss and/or pure dielectric loss.…”

The generalized Jonscher's relationship for conductivity and its confirmation for porous structures

“…For these NCM it was found the giant growth of dielectric permittivity at low frequencies [18] and essential increasing of conductivity in the paraelectric phase [22,25], the change of type of phase transition (PT) from the first-order PT to the second-order one at NaNO 2 nanocluster size smaller than 50 nm [15,21,26]. It was also shown that a specific volume pre-melted state was formed abovẽ 380 K manifesting itself in a steep growth of the unit cell volume and the amplitudes of thermal motions of the constituent ions [20], mobility of sodium ions [19], a sharp decreasing of a shear modulus and internal friction [27]. For NCM on base of porous glasses the lowering of T C at decreasing average pores diameter was observed [26].…”

“…The results of the experimental data fitting by the function (27) in the temperature range 390-492К are presented in Figs. 6 and 7.…”

“…The results of the fitting of the real part of the complex dielectric permeability The black rhombs correspond to experimental data while the solid surface (solid lines) corresponds to function(27). The mean values of the standard deviation for each set of experimental points do not exceed 8% (see the text).…”