Profex XRD: Refining crystallite sizes and texture

[@Jakestain]

This channel is excellent. Thank you

[@khaledamr5385]

why is it that I'm getting the same grain size value for different (hkl) positions?

[@edjancastro]

Greetings Dr! I would like to know about the crystallite size method. Whether it is by WH method or Scherrer's method. Thank you in advance.

[@profextutorials2325]

It's neither one nor the other. Check out section 5.6 of the BGMN user manual for a description of the algorithm: www.profex-xrd.org/wp-content/uploads/2017/05/BGMN_manual_2005.pdf

[@JakeEntwistle-kz4uk]

Hi Thanks for another great video. With regards to the crystallite size is there a way to subtract the machine broadening from the measurement?

[@profextutorials2325]

No it is not possible. But it shouldn't be necessary. The crystallite size is calculated from the sample broadening only.

[@khaledamr5385]

thank you

[@lacsiop]

At 21:08 you mean integrated intensities, but it's not just intensities ? Thx for all this content.

[@stalinnlongobardi]

I added line 9 in structure file and got an error 😕

[@profextutorials2325]

If your B1 parameter was refined to 0.0, it means that the crystallites are too large to cause any peak broadening (typically >1000 nm). In that case, the GrainSize function reports ERROR.

[@muratozen7755]

Could you kindly share the ex2-file1 file so to practice the steps shown in this tutorial, if possible. Danke trotzdem.

[@muratozen7755]

Never mind... I've found what I was looking for in the tutorials page at www.profex-xrd.org/?page_id=68 :) Thanks.

[@profextutorials2325]

Thanks for the suggestion. I added the download link to the description of the video.

[@MatheusPimentel93]

Thank you for your videos, help a lot. Can I do refinement just in .raw data format? Because te lab that do analyses for me send a .txt data format. When I try do to refinement it doesn´t work.

[@profextutorials2325]

@Matheus Pimentel You should be able to use the txt file. But since txt is not a defined format, it depends on the way the data is formatted in the file. Profex reads files with two columns, the first being the 2theta angle, the second being the intensity. The values must be separated by a space, semicolon, or tab. The scientific notation is supported. The decimal sign I don't remember, a dot should work for sure, comma I'm not sure. Comment lines at the beginning of the file starting with # or ! are ignored. With this information you should be able to modify the file until Profex can read it.

[@MatheusPimentel93]

@@profextutorials2325 thank you for your help. I changed the txt data , excluding the line that is disturbing the collumns. Now Profex can read the data. Your work is fantastsic.

[@obosobenard7612]

How do I Know the ICSD file name for the phase identified

[@profextutorials2325]

Profex does not include files from the ICSD.

[@SimoneJosun]

Video is not clear