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Questions related from Chandresh Kumar Rastogi
Dear Scholars What are the basic differences between external, internal and intrinsic photo-luminescence quantum efficiency? How can we calculate them? With Regards Chandresh
11 November 2016 3,648 11 View
Dear Scholars, What does "Order of the reflection" (n) suggests in Bragg's law? 2dsinθ = nλ Why generally we consider first order of diffraction (n =1) for most of the cases. Regards Chandresh
04 April 2016 4,432 4 View
Why the magnetic dipole transition are more allowed when the Eu3+ ions are at site having inversion symmetry? How the symmetry of crystal decides the certain transitions to occur and others to...
07 July 2015 3,157 5 View
How can one differentiate between native and non-native phases ? How are they related with thermodynamically stable or metastable phases?
07 July 2015 7,496 1 View
What sequence one should follow for refining the parameters to get the best fit using Rietveld analysis? I have bring down the value of chi2 to 12 (still too large). Though its reported in...
06 June 2015 7,989 11 View
