strain and dislocation density from XRD data - 14

Microstrain and dislocation density are two important parameters that can be calculated from XRD data. In my previous video, I have shown how to calculate microstrain from XRD data using the W-H plot method. The W-H plot method is quite complicated. Therefore, In this video, I have shown a simple method for the calculation of microstrain and dislocation density. Moreover, this video also covers the calculation of crystallites (grain) size, FWHM, and peak position. In short, these 8 minutes provide a comprehensive analysis of XRD data.
You can find below the link to my other videos on the XRD data analysis. If you have any questions just ask them in the comment and for more videos, please subscribe to NanoWorld.
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[@geraldzhou2128]

Very helpful, thank you for the detailed process.

[@mohamedkordyel-gebaly8006]

really these are useful data great thank you for the great job that you did

[@kingsacadmicj4281]

Thank you so much. I will appreciate a reference to the method in this video.

[@nafze1459]

Awesome, thank you so much.

[@prasadgodse6608]

ultimate, Thanks a lot.

[@mammannursanda9154]

Excellent job keep it up

[@johnk9621]

Hello, thank you for sharing this content. Could you please cite related publications or books concerning this analysis ?

[@From_Crowd_to_Nation]

Nice work 👌

[@user-or5wd2qk4l]

Thanky you for these XRD videos, so helpful. I'm wandering that if the grain size is about 2~5 μm, can I use all these methods to calculate the strain? Since the grain size is beyond the applicable range of the scherrer equation

[@karun9852]

great work

[@md.sydulislam4362]

Do we need to calculate stacking fault/ s.f. probabbility from XRD data through the slop of plot of 2θ vs tanθ? or we can directly calculate that from the equation?

[@bhardwaj9274]

very nice information

[@bhardwaj9274]

Very useful data

[@moisesisaicasillasalvarez2896]

Thanks a lot, for all your videos! They are very useful. Only one question, in you video about Sherer equation for crystallite size you had cited to Amjad Khan et. al. he use another equation for microstrain and dislocation density. What is the difference between that and the used on this video?

[@RafaySciencesAcademy]

VERY WELL, THANK YOU❤

[@NoorMohmed-ty6ty]

thanks a lot

[@basicofbiology5801]

Thank you.... could you please share the method that you used here for calculation

[@ayuvaleri2383]

Hello sir, i wanna ask, do we need to find the average of the last two calculation?

[@shahzadahmed5012]

Nice video.. Thanks once again. How to calculate electron density from XRD pattern.?

[@derrouicheafifa3491]

thank you verry good ohhhhhh verrrrrrry nice

[@nanoworld6122]

Thank you and welcome

[@riyadhkakaiey5700]

good job dear. but could make video how can I calculate the lattice stress and energy deformation ?? I have a question for you > when following your steps for calculating lattice strain in the last video you shared on your channel. I have got some of my results negative signs. please, could you help me what is mean the negative sign ? do you think is this result correct or mistake?

[@ersinunal79]

Can you give reference articles about these formulas?

[@faheemwani1996]

sir how to calculate Young's modulus and stress. plzzz sir make a video as soon as possible. Thank u sir

[@ZaidLHadi]

Great,,, Thanks a lot

[@aerodeena008]

How to calculate the overall residual stress present in the sample using XRD data ?

[@aboraqueen6395]

❤❤❤

[@islamicshortclips4482]

please provide the reference for the formula used to calculate dislocation density

[@anjukhurana6383]

Sir can u explain how microstrain leads to the broadening of X ray diffraction peak of nanomaterial??? Acc to 3-4 marks

[@sarveshkumargupta6988]

Respected Sir, such nice and useful video lectures. I request you to please send me these word files which you write during lectures. Please, Sir. It would be a great help to me. Thank you Sir.

[@ranadeeprajsumukam2130]

Sir actually in W-H plot video you mentioned beta (T) = beta (D) + beta (E). But here for calculating D and micro strain you considered beta(T) as common. Can you please explain.

[@YoAddicts]

By assuming Total Peak Broadening beta (T) is mainly due to the effects of Crystalline Size (D) beta (D), we simply neglect micro-strain as an effect of Peak Broadening [as in beta (T) = beta (D)]. In fact, many publications in the area of inorganic colloidal synthesis would refer to Scherrer equation to calculate the Crystalline Size (D) rather than using the Williamson-Hall plot due to this specific reason (as in neglecting micro-strain effects).

[@ranadeeprajsumukam2130]

Thank you

[@ManSingh-mw1il]

@@YoAddicts and what about calculating micro strain from using beta (FWHM) which consists of peak broadening due to both crystallite size and micro strain?

[@dailywOOOrldfacts]

Sir in headings of table, dislocation density and strain are multiplied by 10^-3 , but when putting formula for calculation, these were multiplied by 10^3. Why is it so?

[@nanoworld6122]

Yes, In the formula, I multiply it with 10^3, because I was getting each value in the form 0.00343, 0.00276 etc. In this form, each value contains too many zeros. To avoid too many zero in a single value and present my data look nicer, I just converted it to an engineering prefix. i.e. 10^3 * 10^-3 = 1 it is not changing anything. And you can't see any zero. In simple words, I just take 10^-3 common from each value. If you are still confused. Then do not multiply 10^3 in the formula and also, do not multiply 10^-3 in the heading. You will get your answers in the form of 0.01 or 0.001 or 0.0001 or 0.00001 etc. This is also correct.

[@titanhuzaimawardanni7963]

how you calculate k and lamda?

[@nanoworld6122]

K and lambda are constant

[@shoaibmuhammad1428]

Please define why you are taking 10^3 for dislocation density?

[@nanoworld6122]

I am getting very small values i,e 0.00123. I can write my values in this (0.00123) form, But it will not look nicer. Because It is a 6 decimal digit. So, If I use the engineering digit notation system then it will look much better. In the engineering digit notation system, I can write it 1.23 X 10 ^-3. But instead of writing 10^-3 with each value, we can write it only one time on the top and it will automatically be considered for all the values.

[@shoaibmuhammad1428]

@@nanoworld6122 thank you so much

[@alishakakkar6096]

@@shoaibmuhammad1428 why has he used 10^3 in calculating but has written 10^-3

[@amalgeorge9342]

Strain = beta costheta/4. Why beta/4tan theta

[@basicofbiology5801]

Thank you.... could you please share the method that you used here for calculation

[@basicofbiology5801]

Thank you.... could you please share the method that you used here for calculation

[@basicofbiology5801]

Thank you.... could you please share the method that you used here for calculation