Hello..i am getting a horizontal linear line everytime i am trying to fit my data. Could you please explain why i am not getting any non linear fitting graph.?
Hello Sir, please give the details about exponential factor (n) value for both Jonscher’s Power Law and Almond-West Formalism, is there any change in the value, if so, what would be the reason? How do understand the conductivity mechanism in both cases? Please, provide an Origin fitting formula.
Hello sir, the n is related to interaction among different relaxing species and depends on temperature, pressure, compositions, type of material may be solid or liquid. Change in n describes the change in conduction mechanism. I have mentioned one of my paper below which clearly describes about n: aip.scitation.org/doi/10.1063/1.4919946. in addition, formula is there in video. If you have doubt kindly mail.
I think your ac conductivity specta has more grain boundary contributions to polarization than bulk contributions. Thats why it may be looking like a step. You can try double power law or you can present your data in dielectric modulus formalism where 2 peaks will be there.
If the data is not fitting properly, try to fix one parameter and change the other. Next, if the sample has more grain boundary contributions than grain it will be difficult to fit. Or you can also try for double power law. If both of the above does not work, go for modulus data presentation.
Hello..i am getting a horizontal linear line everytime i am trying to fit my data. Could you please explain why i am not getting any non linear fitting graph.?
Could you please show how did you write the both equation, thanks.
It will be helpful if you can provide the user-defined function derivation.
Kindly check my other videos. The procedure is given
Hello Sir, please give the details about exponential factor (n) value for both Jonscher’s Power Law and Almond-West Formalism, is there any change in the value, if so, what would be the reason? How do understand the conductivity mechanism in both cases?
Please, provide an Origin fitting formula.
Hello sir, the n is related to interaction among different relaxing species and depends on temperature, pressure, compositions, type of material may be solid or liquid. Change in n describes the change in conduction mechanism. I have mentioned one of my paper below which clearly describes about n: aip.scitation.org/doi/10.1063/1.4919946. in addition, formula is there in video. If you have doubt kindly mail.
Fitting procedure in Origin:
Jonscher’s Power Law: Parameters: sigma_dc,A,n; Equation: y= sigma_dc+A*(x^n)
Almond-West Formalism: Parameters: sigma_dc,omega,n ; Equation: y=
(sigma_dc)*(1+(x/(omega))^n)
@@physicsdoneright Thanks very much
@@physicsdoneright Thanks very much
Sir.
I have a Ac cond vs Freq graph
But my graph has a hump between high and low frequency region. What should I do
Thank you
I think your ac conductivity specta has more grain boundary contributions to polarization than bulk contributions. Thats why it may be looking like a step. You can try double power law or you can present your data in dielectric modulus formalism where 2 peaks will be there.
Sir
What to do if the graph is not fitting properly
If the data is not fitting properly, try to fix one parameter and change the other. Next, if the sample has more grain boundary contributions than grain it will be difficult to fit. Or you can also try for double power law. If both of the above does not work, go for modulus data presentation.