How should a powder sample be scanned for reitveld refinement on later stage?

Does scan rate has any impact? what other parameters to consider while performing xrd ?

08 September 2018 6,805 2 View

How to subtract instrumental error from my XRD diffractogram, if I have standard silicon XRD data (READ DESCRIPTION BELOW) ?

I have standard data of Silicon sample and I want to subtract instrumental error (FWHM) from my sample. My sample and Silicon diffractogram are having peaks at different 2theta values (obvious). I...

07 August 2018 5,907 9 View

Can I calculate bandgap for YAG nanopowder?How to do it?

YAG is Yttrium Aluminium Garnet.

07 August 2018 4,662 8 View

How can I perform photoluminescenc spectroscopy for cellulose paper functionalized with rare earth ions?

Can I perform test directly using the paper sample? If I need a solvent to perform test which could be suitable solvent?

07 August 2018 9,957 2 View

What value of FWHM should I use to calculate crystallite size and strain by Scherrer formula in below mentioned situation?

I am comparing crystallite size and strain using Scherrer and Williamson hall method.But I have doubt in mind whether the value of FWHM I am using is correct. The Bragg peak width is a...

05 June 2018 7,575 13 View

Has anyone studied or collected data of Photoluminiscence (PL) spectra (emission and excitation) and PL decay for YAG(Y3Al5O12) nanoparticles?

Please share the data if you have.

05 June 2018 6,546 2 View

What is X-ray density?How to calculate x-ray density of nanoparticles?

please give papers/ references, if possible.

05 June 2018 4,236 4 View

How to tackle -ve Adjusted R-square value in Williamson hall plot?

I performed Willamson hall analysis of 4 smaples of YAG nanoparticles . I included top 9 peaks (same) in each case to get a linear fit line.However, in two samples adj R square value is positive...

05 June 2018 4,443 2 View

How to calculate crystallinity for cellulose 2 using xrd results and segal method?How to calculate peak intensities?Any way to do without software?

my xrd resembles Cellulose 2 structure OBTAINED FROM BAGASSE. Is there any other easy method to calculate crystalinity ?

05 June 2018 477 0 View

What interpretations can I make from EDS(Energy dispersive X-ray spectroscopy) results i.e. element weight percentage and atomic percentage?

here are the results (O -Oxygen, Al Aluminium ,Y- Yttrium)

04 May 2018 3,805 4 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

Can we block unwanted images during the x-ray prediction?

i am try to classify the x-ray images. During classification , can i block unwanted images (except x-ray image).

03 March 2021 7,100 1 View

Why Austenite grains in steel show much more twinning than ferrite grains?

It is oftentimes said to be a distinctive metallographic trait that differentiates a fully austenitic and a fully felly ferritic steel without etching that might distinguish between two. Why...

02 March 2021 728 2 View

How to grow E.coli on the low salt LB agar plate with 50 or 100ug/ml of Blasticidin?

Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...

01 March 2021 2,027 2 View

Does anyone know to clarify these changes?

01 March 2021 1,290 2 View

Can bacterial suspension be pipetted directly onto petri dish and agar poured onto it?

Hi, recently I encountered a protocol for plating which was not the usual method I have been practicing (pour LB agar onto plate, allow it to solidify, pipette bacterial suspension onto plate,...

28 February 2021 7,292 3 View

In an eye with Tyndall, does each dot correspond to an individual cell?

When you observe the presence of Tyndall in an inflamed eye: Does each of the small floating dots correspond to an individual cell or to an aggregate of cells? Does a conventional slit lamp have...

27 February 2021 6,326 2 View

How to calculate the crystallinity of cellulose film?

27 February 2021 2,753 4 View

What could be the reason for not having further low chi square value (better agreement) in my refinement result?

I have tried every combination of parameter changes and after that i have a poor chi square value. I can't get it lower any further. I know there have been a lot of discussion about Rietveld...

26 February 2021 8,480 3 View

Can anyone share his experience regards Smoothing in origin?

I am working on TiO2 composite material and the results of XRD have a lot of small/junk peaks and while I apply a smooth filter in Origin then the other characteristics peaks disappear so anyone...

26 February 2021 8,183 3 View