Files are available at: topas.webspace.durham.ac.uk/youtube-videos/

This is such a carefully designed tutorial! Prof. Evans illustrates so well about the very fundamental theory of Rietveld and also provides the practical tricks. It is so valuable , thank you so much!

Wow! This video is an absolute gem! It's been immensely helpful in clarifying some complex concepts for me. The explanations were clear, concise, and easy to follow, making the whole process much more manageable. I really appreciate the effort put into creating such valuable content. Please keep up the fantastic work! 👏

This is such an excellent tutorial. Very explicit. Might look complicated for new users but the explanations are quite lucid.

Dear Prof. Evans, many thanks for your clear explanation! I also find it helpful even I have been using TOPAS for almost more than 7 years. I was not able to join the famous TOPAS school Durham and has to learn all the tips piece by piece along the way while using TOPAS. I am sure a lot of students or researchers who are using TOPAS or start to learn TOPAS will benefit from your tutorial! Looking forward to your future tutorial!

Thank you so much, Prof. John Evans. I really love the way you break things down. You remain an indispensable asset in this field. You were able to answer most of my questions in this video. I find this video really helpful.

Thank you for this thorough explanation!

@johnevansstructuralscience4018

Жыл бұрын

Glad it was helpful!

Amazing videos, thank you from Australia :)

Thanks for the tutorial. I have a question regarding the FWHM of the Stephens Hexagonal Peak Shape, how can we export that information from Topas? If not possible to get it directly, how we can use the fitted parameters [Stephens_hexagonal(eta,1,s400,1,s004,1,s202,1)] to calculate FWHM? Thanks.

Thanks so much for the video. When I am doing refinement of XRD pattern. Sometimes, the index is not at the center of the refinement peaks, it is a bit of shifted. Could you please advice the reasons for this and how to solve it?

@johnevansstructuralscience4018

Жыл бұрын

The best place to ask topas questions is: topas.awh.durham.ac.uk/flarum/public/ The reason is probably due to a 2-theta shift between calculated (tick marks) and experimental peak positions due to either a zero point error or a height error. These shifts are not applied to the tick marks, but are applied to the calculated pattern.

How do I add min and max values to the cell parameter units? In my JEDit code I have "a =lpa;:10.598092` min=10 max=10.59;" which is obviously wrong as the refined value has gone above the refined value.

@johnevansstructuralscience4018

Жыл бұрын

Use the topas forum for questions like these if you can - more people are likely to reply. It looks like you've missed a semicolon after min=10;.