Hello Thanks for the nice video. I met a problem when I made the analysis, I had a strong texture, so it doesn;t works perfect. How can I decrease the influence of texture.
The best way to handle texture is to avoid it as much as you can. Maybe this means making your sample into a powder (assuming it is currently a solid chunk). Let me know if your sample is already a powder. If there isn't anything you can do to remove the texture from your sample, another option is to try modeling it with HighScore. I'm guessing certain peaks of yours are much taller than they should be, and other peaks are much smaller than they should be. For the peaks that are much taller, can you tell me what planes they belong to?
@@IAMMDiffractionFacility Thanks for the quick response and the answer. My sample is fcc structure and prepared by high-pressure torsion. So it has a strong texture of 111. The other peaks are not as strong as 111. The Rwp has nearly 33
Oh my goodness, where did the time go?! I apologize for such a slow reply. My advice would be to go to the Refinement Control tab, click the + next to your phase that has strong texture, then click the name of the phase that has strong texture. In the Object Inspector panel to the right, scroll down until you get to the Preferred Orientation section. I would suggest you use the March/Dollase model, and make the hkl values all 1 so that you have a 111 texture. You should then go back to the refinement control tab, and the second item under the phase name should be "March-Dollase Factor 1." Put a check mark in the refine box. Then switch to a manual refinement and run it. Let me know if that helps or if you have more questions. I will try harder to answer them faster!
@@IAMMDiffractionFacility No problem, I appreciate your answering. In fact, I followed your instructions and performed the analysis. It appears that not only the {111} peak but also the {200} peak are quite prominent. As a result, the Rwp value remains high. I attempted to apply the Williamson-Hall method you mentioned in your other videos, but with only five data points, the fitting results didn't seem particularly accurate.
Hmmmm, there is another thing you can try. In the Object Inspector, where you saw March-Dollase and set it to (111), you could try switching it to Spherical Harmonics. You'll then want to go back to the Refinement Control tab, and you should see something else appear where the option to refine the March-Dollase factor was (if it doesn't look any different, try clicking some other line, and then it should appear). I typically try to refine the top 3-4 spherical harmonics inputs. I'll be honest, I don't really understand this correction (so take this suggestion with a grain of salt), but it can help with some tricky textures. This is the difficulty when working with texture in XRD. The best thing to try to do is reduce it if at all possible, but that just isn't an option sometimes.
thank you for all these videos, I would like on the other hand to learn about the method of data acquisition on residual stresses, and main layers, as well as their corresponding software, namely Stress and Amass.
Hi.. I also want to know how to calculate residual stresses in xpert highscore. I can't find the values of sin2 psi angles to plot between [d_ spacing with sin2 psi]
Thank you for the kind words! I have a number of videos I plan on completing next (sample alignment, XRR, and residual stress), but yours is also a good suggestion. I will add it to the list! In the meantime, I have uploaded a document to our website that details some methods for determining crystallinity. That will be a good place to start to decide which method would work best for your situation. You can find the document at www.jiamdiffraction.com/documents. If you look under "Other Documents," you should see "Methods for Quantifying Amorphous Content." It is a PDF from Bruker. It is from a workshop, so some slides don't have text on them, only pictures. It gives a lot of good information though on techniques.
Hi. The video is very helpful!. One question from me, do line profile analysis is accurate or valid in determining the crystallite size? Usually we can see the crystallite size after profile fitting at each peak. Hope you can give an opinion about this. Thank you.
Thank you for the kind words! Honestly, I'm not too sure about that option. At the very least, you would want to make sure that you have told HighScore to account for the instrumental broadening. I suggest watching the other crystallite size and microstrain videos on our channel if you do not want to determine these parameters with Rietveld refinements. Our two other videos involve profile fitting.
There should be a number of tutorial datasets on your computer. Look in C:/Program Files (x86)/PANalytical/HighScore/tutorial. If you follow the examples found in the HighScore help program, they should use the files located in this folder.
Dear Sir, can we get the real part of Fourier coefficient using HighScore, i.e., A(L) or LnA(L) used in Warren-Averbach method?
Hello Thanks for the nice video. I met a problem when I made the analysis, I had a strong texture, so it doesn;t works perfect. How can I decrease the influence of texture.
The best way to handle texture is to avoid it as much as you can. Maybe this means making your sample into a powder (assuming it is currently a solid chunk). Let me know if your sample is already a powder. If there isn't anything you can do to remove the texture from your sample, another option is to try modeling it with HighScore. I'm guessing certain peaks of yours are much taller than they should be, and other peaks are much smaller than they should be. For the peaks that are much taller, can you tell me what planes they belong to?
@@IAMMDiffractionFacility Thanks for the quick response and the answer. My sample is fcc structure and prepared by high-pressure torsion. So it has a strong texture of 111. The other peaks are not as strong as 111. The Rwp has nearly 33
Oh my goodness, where did the time go?! I apologize for such a slow reply. My advice would be to go to the Refinement Control tab, click the + next to your phase that has strong texture, then click the name of the phase that has strong texture. In the Object Inspector panel to the right, scroll down until you get to the Preferred Orientation section. I would suggest you use the March/Dollase model, and make the hkl values all 1 so that you have a 111 texture. You should then go back to the refinement control tab, and the second item under the phase name should be "March-Dollase Factor 1." Put a check mark in the refine box. Then switch to a manual refinement and run it.
Let me know if that helps or if you have more questions. I will try harder to answer them faster!
@@IAMMDiffractionFacility
No problem, I appreciate your answering. In fact, I followed your instructions and performed the analysis. It appears that not only the {111} peak but also the {200} peak are quite prominent. As a result, the Rwp value remains high. I attempted to apply the Williamson-Hall method you mentioned in your other videos, but with only five data points, the fitting results didn't seem particularly accurate.
Hmmmm, there is another thing you can try. In the Object Inspector, where you saw March-Dollase and set it to (111), you could try switching it to Spherical Harmonics. You'll then want to go back to the Refinement Control tab, and you should see something else appear where the option to refine the March-Dollase factor was (if it doesn't look any different, try clicking some other line, and then it should appear). I typically try to refine the top 3-4 spherical harmonics inputs. I'll be honest, I don't really understand this correction (so take this suggestion with a grain of salt), but it can help with some tricky textures.
This is the difficulty when working with texture in XRD. The best thing to try to do is reduce it if at all possible, but that just isn't an option sometimes.
what a great video!
Thanks you!
Glad you liked it!
Plz JIAM Diffraction Facility can you share me the from where i can download Xperts High Score Plus ?
It is licensed software, and you can purchase it from Malvern Panalytical.
thank you for all these videos, I would like on the other hand to learn about the method of data acquisition on residual stresses, and main layers, as well as their corresponding software, namely Stress and Amass.
Hi.. I also want to know how to calculate residual stresses in xpert highscore. I can't find the values of sin2 psi angles to plot between [d_ spacing with sin2 psi]
Sir, Your all videos are so helpful, can you guide us on degree of crystallinity calculation using High score plus.
Thank you for the kind words! I have a number of videos I plan on completing next (sample alignment, XRR, and residual stress), but yours is also a good suggestion. I will add it to the list!
In the meantime, I have uploaded a document to our website that details some methods for determining crystallinity. That will be a good place to start to decide which method would work best for your situation. You can find the document at www.jiamdiffraction.com/documents. If you look under "Other Documents," you should see "Methods for Quantifying Amorphous Content." It is a PDF from Bruker. It is from a workshop, so some slides don't have text on them, only pictures. It gives a lot of good information though on techniques.
Hi. The video is very helpful!. One question from me, do line profile analysis is accurate or valid in determining the crystallite size? Usually we can see the crystallite size after profile fitting at each peak. Hope you can give an opinion about this. Thank you.
Thank you for the kind words! Honestly, I'm not too sure about that option. At the very least, you would want to make sure that you have told HighScore to account for the instrumental broadening. I suggest watching the other crystallite size and microstrain videos on our channel if you do not want to determine these parameters with Rietveld refinements. Our two other videos involve profile fitting.
how to download practice data by panalytical ?
There should be a number of tutorial datasets on your computer. Look in C:/Program Files (x86)/PANalytical/HighScore/tutorial. If you follow the examples found in the HighScore help program, they should use the files located in this folder.
@@IAMMDiffractionFacility why the fit profile icon can't be click ?
it helped me a lot thank you!
Glad it helped!
Thanks!
Thank's 🌹
You're welcome! 😊