I get the impedance values (real and imaginary parts) from the EIS technique. Can we correlate to it any dielectric property (dielectric loss, dielectric strength, or dielectric constant) using an equation, etc?
I do not have an exact answer. Maybe this reference can help, it is a Maple worksheet, if you have Maple software. There is a pdf preview you could use. https://www.maplesoft.com/applications/view.aspx?SID=154540
the relationship between impedance and conductivity is given generally by Maxwells equations and more specific by the Kramers Kronig relations.
If the permittivity eps is expressed by eps = eps1 - j eps 2 , then the imaginary part eps 2 is given by eps2 = sigma/(omega*eps0) with sigma the conductivity, omega the circular frequency and eps0 the vacuum permittivity. The parameter depend on frequency and can be related to optical properties too (eps1 = n² - k² and eps2 = 2nk). Here, n is the refractive index and k the absorption.
Jinglong Xie I have studied them and they explain the dielectric responses of ceramic material well I have a polymer sample. They have explained the relationship between complex permittivity and impedance which is beneficial for my work at some point but the structure for polymer and ceramics are different so we cannot take it as a reference. What's your say on this?