Lucas Bonan Gomes

3 Questions 28 Answers 0 Followers

Questions related from Lucas Bonan Gomes

How to determine Amorphous (%) using an Internal Standard with two crystalline phases?

I am using an Internal Standard (hexagonal ZnO) to quantify the amorphous (%) of a glass + metal sample by Rietveld method.When I have only one crystalline phase + amorphous, I can easily...

07 July 2017 6,033 3 View

Does anybody have a CIF file of a polymorphous phase from Nb2O5? Maybe Nb12O29?

I'm trying to refine by Rietveld Method a Al2O3-AlNbO4-NaNbO3 system, and I'm having some problems with a reflection on 44-45 2theta. I've used all CIF files of AlNbO4 that I could find, but I'm...

07 July 2014 5,344 2 View

Does anybody has a AlNbO4 CIF file for using in RQPA?

I work with Rietveld Quantitative Phase Analysis (RQPA) and I need some new AlNbO4 CIF files, because the one I got could not refine perfectely my XRDs. I guess I have some polimorphous...

06 June 2014 2,048 2 View