Sachin Kumar

10 Questions 76 Answers 0 Followers

Questions related from Sachin Kumar

What is the correlation b/w Crystallite size and Domain size?

# crystallite is the part of the crystal which coherently diffracts the X-rays falling on them. # A ferroelectric domain is the part of the material in which all the polarization vectors are...

27 April 2019 5,608 8 View

What is the difference between a true peak shift and the shift of an envelope caused by the rise of a new peak?

## I want to check the validity of my concept - # Figure in left is a peak shift in which the width of peak is not changing. # Figure in right is not a peak shift. The maximum point of the...

13 January 2019 319 0 View

It is a question about Raman baseline fitting?

I want to perform baseline correction for a raman data. Which kind of baseline correction is the best for Raman? I am using origin. Should I pick up the random baseline points and subtract it or...

14 December 2018 4,037 1 View

Does all the lattice site become cubic when Zr or Sn like elements are doped at Ti-site of barium titanate?

# Barium Titanate (BT) is tetragonal at room temperature. # XRD, Raman and numerous other studies show that BT becomes cubic when Zirconium or tin is substituted at titanium site minimum by 20%. #...

14 December 2018 9,090 3 View

Is there any way to dope Sn (Tin) in Barium Titanate using Sol-Gel mathod?

# I dissolved Barium and Titanium precursors in their respective solvents. # I have either tin oxide or tin chloride. can i dissolve it in any solvent and then add it to the Ti- site of BaTiO3...

31 January 2018 9,311 4 View

Problem is with transition temperature in Zr doped Barium Titanate?

# 10 at% Zr was doped in barium titanate at titanium site. # XRD confirms the proper phase formation. # curie temperature should be around 60 degree C. # Dielectric Constant is just decreasing...

26 December 2017 6,015 1 View

Is there any experimental way to tell whether an amphoteric dopant has occupied A or B site of an ABO3 type perovskite structure?

# An amphoteric dopant like Erbium (Er) may occupy any site of an ABO3 type perovskite structure (Like Barium Titanate). # It was aimed to dope at A-site but for higher dopings it goes to B-site...

24 October 2017 7,533 7 View

Here is a different kind of PE loop. in one of my sample a strange PE loop appeared. I searched in many articles but didnot findany explanation?

# A PE-hysteresis loop is like the inversion of an ideal PE loop. such that its polarization doesn't saturate but become sharply increasing with increasing E field. # I read about all kinds of...

28 May 2017 6,965 0 View

How to calculate crystallite size using TEM images?

crystallite size calculation method? in case, I have TEM images?

02 March 2017 7,701 9 View

Why dielectric constant of a material starts increasing again after curie temperature, in case of high temperature and low frequency?

After curie temperature dielectric constant comes down. but in some materials it starts increasing again for high temperature and low frequencies. i want to know...why this happens? and how to...

09 June 2016 2,364 2 View