Additionally, the dielectric constant
([epsilon]'), the dielectric loss factor ([epsilon]"), and the conductivity ([sigma]) values were calculated at 1 kHz and at the room temperature.
The piezoelectric deformation is proportional to the square of the polarization, and the polarization is proportional to the dielectric constant
. Therefore, piezoelectric performance can be estimated by a dielectric constant
measurement, as more deformation energy would be induced by a larger dielectric constant
Figure 13 depicts the concentration dependence of bulk dielectric constant
and DC conductivity.
and tangent loss showed normal dispersion behavior.
The high dielectric constant
and energy storage density of the P(VDF-TrFE)/P(VDF-TrFE-CFE) blend system can be used for practical application in flexible field-effect transistor (FET), nanogenerators and ferroelectric random access memory (FeRAM) like devices."
Such type of morphology is important to lower dielectric constant
, as they can hold a lot of air voids between them.
Figure 5 shows the dielectric constant
, as a function of the weight fraction of CCTO in the composites, for 2.7 GHz and 5.0 GHz cavities, measured at room temperature.
The dielectric constant
and dielectric loss of the azo polymers and the precursor were measured in the frequency range of 100 Hz-200 kHz.
As porosity increases, the alloy's dielectric constant
decreases but the mechanical and electrical properties degrade [8, 9].
The decrease in dielectric constant
is imputed to the reduction in the internal viscosity of the substituted samples.
In a recently published article in the journal Materials Horizons, Baratunde Cola, an associate professor in the Woodruff School of Mechanical Engineering at the Georgia Institute of Technology, highlights the potential of silicon dioxide nanoparticles coated with a high dielectric constant
polymer for cooling power-hungry electronic devices.
Changes in this electromagnetic field are directly proportional to the dielectric constant
of the material through which it passes.