How to study the Dielectric and Ferroelectric properties using PwScf calculations?

I am good at DOS, Band structure and phonon studies. I would like to extend my studies to Dielectric and Ferroelectric studies. How to find the polarization in the material?

07 August 2014 9,925 5 View

Does any one have Video lecture on Rietveld Refinement using Fullproof Software?

07 August 2014 5,161 0 View

Which software is better for refinement either Fullproof or Maud?

06 July 2014 7,640 5 View

What is the good software for nonlinear curve fitting rather than Excel and Origin?

What is the good software for nonlinear curve fitting rather than Excel and Origin?

04 May 2014 9,086 10 View

Does anyone know about DFT summer schools?

I want to attend DFT summer schools. If anyone knows please let me know the details. Is there any website for DFT related schools?

02 March 2014 9,885 0 View

How can we determine if a material is an Insulator or a Semiconductor?

My material band gap is 2.86 eV. I am confused as to how to confirm whether it is a Insulator or Semiconductor. In literature it has not been made clear.

01 February 2014 9,883 10 View

Can any one help with dielectric relaxation and conductivity studies?

I am new to this area. I would like to study these concepts from beginning onwards.

11 December 2013 3,487 9 View

What software to use for Raman and IR theoretical modes?

Is there any free software to find Raman theoretical modes? I know Gaussian 3 package but it is a licensed version.

10 November 2013 413 3 View

I would like to know the ferroelectric perovskites names and their spontaneous polarization?

I would like to know the ferroelectric perovskites names and their spontaneous polarization.Could you suggest me any book or website?

10 November 2013 1,448 7 View

Vibrational frequencies - can anyone help?

How to find the vibrational frequencies using Pwscf? I have taken Experimental Raman spectrum. I have to assign the modes (A1g, B1u,B2g and A2g etc) for each peak in spectrum. Example given below.

10 November 2013 5,935 25 View

Could you recommend any books about Number Theory?

Beginner level books. High level books. Analytical Number Theory. Algebraic Number Theory. Combinatorical Number Theory. Books about partitions. Books about primes.

03 March 2021 7,174 5 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

What are the application of Fixed points thoery in Chemistry.?

It is said that fixed point theory has lot of applications not in the field of mathematics only but also in various areas. So I am looking for applications in Chemistry only..

26 February 2021 3,533 1 View