Namrata Pattanayak

3 Questions 7 Answers 0 Followers

Questions related from Namrata Pattanayak

Is it true that dopants with bigger ionic radii always leads to increase in lattice parameters?

MY sample is iron oxide doped with Zn and the lattice parameters I have determined from the Rietveld analysis. While the ionic radius of Zn is more than Fe, I found that compare to pristine...

12 July 2023 5,931 2 View

What information one can get from single crystal XRD with four circle diffractometer which one can not obtain from the powder XRD ?

In order to analyze the detail crystal structure including bond angle, bond length, lattice parameters, wickoff positions, thermal parameters, unit cell information etc. powder XRD followed by...

28 October 2021 6,923 6 View

Can the anisotropic debye waller factors be negative?? Can one use it for the refinement of the synchrotron xrd data??

I am refining the room temperature synchrotron xrd of alpha -Fe2O3. The chi square I got is 3.14 and the lowering of chi square is only possible if I use anisotropic displacement parameter. After...

09 July 2016 8,741 7 View