Moreover, the dielectric loss factor
also depends on a number of factors such as stoichiometry, Fe2+ content, and structural homogeneity which in turn depend upon the composition and sintering temperature of the samples .
These transitions can be determined by mechanical and dielectric relaxation processes, in which the mechanical transition and dielectric loss factor
go to maxima within the transition region.
The dielectric loss factor
is a measure of a material's ability to convert electrical energy to heat.
The dielectric properties of dielectric constant ([epsilon]') and dielectric loss factor
([epsilon]'') can be derived from transmission line theory, which can determine the strength of reflected/transmitted microwave signals from a sample material .
Dielectric properties like dielectric constant and dielectric loss factor
are critical parameters in designing the RF heating protocol.
The dielectric constant, dielectric tangent loss and dielectric loss factor
of the specimen, lying in the frequency range of100 Hz - 1 MHz, exhibited decreasing trend with increase in frequency demonstrating normal ferrite behavior, useful for microwave applications.
Motion of dipolar groups and ions in the film varies during processing, which leads to changes in electrical properties, including permittivity, dielectric loss factor
, and conductivity.
The dielectric constant and the dielectric loss factor
are two measures that need to be established.
The relative dielectric loss factor
is the dominant variable, for a given frequency and field intensity, in determining the microwave power absorbed and resulting temperature rise in a material.
The dielectric properties of the resulting plasma thin films were evaluated and results show that the dielectric constant of the three polycyanurate thin films decreased with increasing frequency, while in contrast, the dielectric loss factor
increased with the increasing frequency.
Summary: The chemical co-precipitation method has been employed to synthesize a series of spinel nanoferrites with composition Mn1-yCoyFe2-xCexO4 and was characterized by the TGA/DTG, FTIR, XRD, DC electrical resistivity, dielectric constant and dielectric loss factor
The electric response of a dielectric can be described by its dielectric constant and dielectric loss factor