Chandra Bhal Singh

11 Questions 285 Answers 0 Followers

Questions related from Chandra Bhal Singh

In which form multiferroic materials shows better Raman features ? Powder or sintered pellet ?

I need to do Raman spectroscopy of my multiferroic samples. I have samples in pellet form and powder form. I want to know which one will show better Raman features?

10 October 2018 4,867 2 View

How to get rid off from Bismuth deficiency XRD peak from bismuth based perovskite oxides?

How to get rid off from Bismuth deficiency XRD peak from bismuth based perovskite oxides? Even after adding extra 10% bismuth the peak at around 2THETA= 27 deg, is still observed in XRD data.

09 September 2018 1,293 5 View

What is reason for negative dielectric loss ?

I am getting negative dielectric loss at high frequency (2MHtz) which become positive beyond 150 degree Celsius. Is it due to interface problem between electrode and ceramic pellet or something else?

08 August 2018 2,285 5 View

Which aqueous medium is the best for stable and homogeneous DISPERSION of ceramic (PbTiO3) particles for TEM sample preparation ?

Which aqueous medium is the best for stable and homogeneous DISPERSION of ceramic (PbTiO3) particles for TEM sample preparation ? if particle size is in 500 nm range what precautions must be follow?

08 August 2018 2,094 7 View

What is the physical significance of "Ideality Factor" in solar cells? What is the Ideality Factor in Ferro-electrical Photovoltaic cells?

I am trying to find out the ideality factor in solar cells which are made of ferroelectric materials such as BiFeO3. These devices are not working on p-n junction model. So need to know some basic...

07 July 2018 6,565 15 View

What is difference between lattice and sublattice ?Also provide examples ?

How to understand lattice and sublattice in crystal structure theory of solids ?

07 July 2018 9,282 5 View

What is history behind discovery of planck's constant ?

What is history behind discovery of planck's constant ? I know what is written in text books of quantum theory. I want to know how they have concluded it.

07 July 2018 2,034 7 View

What else is remained to explain in physics other than God and astrophysical phenomenon ?

Mysteries which are not solved by theoretical physicist or which have confusing theories ? I know there are many in astrophysics but dont want to focus on them now. Is gravity explained and...

07 July 2018 2,315 3 View

How can we understand difference between open circuit voltage and nanoscale open circuit voltage ?

How can we understand difference between open circuit voltage measured of whole solar cell and nanoscale open circuit voltage using c-AFM?

06 June 2018 3,603 0 View

Does Quantum Efficiency of solar cell also depend on crystal structure of absorbing layer ?

Does Quantum Efficiency of solar cells also depend on crystal structure of light absorbing layer of PV device ?

06 June 2018 5,216 5 View

Can we freeze Photons ? is it violating fundamental rules of science and nature ?

Can we freeze Photons ? is it violating fundamental rules of science and nature ? Can we imagine the consequences of freezing light ?

06 June 2018 7,898 0 View