Santosh Kumar Behara

7 Questions 13 Answers 0 Followers

Questions related from Santosh Kumar Behara

What factors affect the thermal conductivity value of graphene in MD simulations?

Research journals are reporting different values of thermal conductivity of graphene. What are all the possible reasons for it?

10 July 2021 9,281 4 View

What is the cause of discontinuity in the electronic band structure of NBT at Gamma point (or any other high symmetry K-point)?

In my DFT calculations of sodium bismuth titante (Na0.5Bi0.5TiO3-NBT) (primitive unit cell with 10 atoms), I found discontinuity in the band structure at Gamma point (High symmetry K-point). When...

07 January 2019 2,748 8 View

Hi to all, I have to do PL (photoluminiscence) data analysis of my sample sodium bismuth titanate (NBT). Can anyone help me regarding this ?

Hi all, I have done PL analysis on NBT based on my excitation wavelength. I am little bit confused for which part of the spectrum I should focus to take data. There are so many peaks at various...

23 October 2017 783 6 View

Is it that difficulty in making NBT phase by using mortar and pestle grinding instead of ball mill for proper mixing ?

Dear all, I am currently preparing NBT phase by using solid state route. I took Na2CO3, Bi2O3 and TiO2 in stoichiometric amount of each. I grinded those by using mortar and pestle about 5hrs...

29 May 2017 9,062 1 View

How many Raman active modes are present in sodium bismuth titante (Na0.5Bi0.5TiO3-NBT) from group theory analysis ?

Hai, I am trying to calculate irreducible representation of point group 3m (C3v) for NBT (having R3c space group - 161) I got 4A1 + 9E = 4*1 + 9*2 = Total 22 Raman peaks (where A is single...

01 January 1970 898 3 View

What is the change in coordination number of A-site cation (Na/Bi) in sodium bismuth titnate when it is cooled from cubic to rhombohedral ?

ABO3 perovskites show cubic structure at high temperatures where the A-site cation is having 12 coordination with oxygen ions and B-site cation is having 6 coordination with oxygen ions But...

01 January 1970 8,786 5 View

What is the origin of ferroelectricity in sodium bismuth titanate ?

Sodium bismuth titanate (Na0.5Bi0.5TiO3-NBT) is a mixed A-site disordered and distorted ABO3 perovskite discovered by Smolenskii et al. in 1960. At room temperature, it involves a distortion of...

01 January 1970 2,808 1 View