crystallites (grain) size and strain through W-H plot method - 13

Calculation of crystallites size and microstrain through the Williamson- Hall plot method is the best idea. The crystallite size calculated through this method is more accurate as compared to the crystallite size calculated through the Scherrer formula. In this video, I have shown the authentic way of using the W-H plot method. I tried to keep every point crystal clean. However, if you are still confused at any point, then just ask me in the comment section below. For more videos, please subscribe to NanoWorld.
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[@chemistry_doctor]

Amazing and helpful for all the researchers i am proud to follow you

[@riyadhkakaiey5700]

well done. you made it very easy. thanks a lot, I hope to continue to share more and more videos...

[@amrradwan4279]

Thanks a lot for this great job, please continue

[@Deathunter2]

Very good and informative Video, keep the work up! :)

[@sarveshkumargupta6988]

Very interesting and knowledgeable video. Thank you, Sir.

[@pugazhinthiran4187]

Thank you very much for your detailed information

[@tahsinmozaffor3627]

Thanks a lot very easily explained

[@rupammandal3717]

great as always

[@rutikasawant9936]

Thank you so much!! It was really helpful..

[@usmanchem08]

thank you for this great video. helped me a lot.

[@mdmazbahuddin5592]

Sometimes I don't get FWHM in nilfitpeaks chart after peak fitting using gaussian or Lorentz profile. What could be the reason? But when I use Gauss profile FWHM is shown in nilfitpeaks chart. My samples are mostly semicrystalline. Your videos were of great help in my project. Many thanks. Keep uploading such tutorials.

[@parthshah6846]

Very informative thank you, it helps in my dissertation project for catalyst analysis thank you once again

[@nanoworld6122]

Great to hear!

[@MyTwinBloggers]

Good video.. really helpful

[@sebacbsee-corner6790]

Thank you so much, it was really helpful 👍

[@nanoworld6122]

Glad to hear that!

[@abdulolaoye9612]

Thank you for this video. please if someone have another material present in the primary material you are working on. Am I going to consider both primary peaks and secondary peaks or primary peaks alone?

[@saddiqueakbar4774]

appreciated help for students. can you please teach us how to calculate dislocation density in XRD. Edge and screw dislocation

[@iqrajabbar5287]

Thanks,V nice ,easy method

[@adilmansoor2716]

indeed a simple and informative.thanks a lot.

[@nanoworld6122]

Glad it was helpful!

[@navdeepsharma2102]

Thanks a Lot sir, great have no words, lots of thanks, hope to make more viedio on other parameters, obtained on XRD and characterization methods

[@ricardohoffmannvalencia6771]

I love your videos

[@zhenhongxue2242]

关注，点赞加分享，谢谢up主的分享！

[@user-mn9jl7bm6m]

Thanks a lot for the tutorial, but I got a question to ask: Is it possible to have slope approximate to zero which means that there’s no strain in the material or the stress has been released causing no strain?

[@nabillebchir8741]

Thank you very much

[@hamdirihab3319]

Thank you so much, but I find negative slope, is it normal?

[@aliansarihamedani8057]

Nice job

[@clinktanr4617]

No words to say amazing PPT point to point explanation... Thanks a lot..

[@nanoworld6122]

Thanks and welcome

[@abhishekjaiswal7143]

Sir, can I get this word file that u used to explain?

[@kranthibedala]

Excellent sir and Thanks a lot sir 🙏🙏🙏🙏

[@dazza9129]

My strain ended being a negative slope. Was there something wrong?

[@akarakoca]

First of all thank you for your sharing. i want to ask related W-H method. when we fit curvefitting if r^2 value far from 1 what we do to fix this? Some peaks maybe subtract?

[@dr.p.s.raghavanprofessor-c377]

Thanks for the detailed demo for calculating crystallite size. Can you comment on the value of the strain and the information obtained from it?

[@sankalp3513]

How do you account for instrumental broadening in this equation?

[@UmaShankar-rr8py]

Very usefull information sir. But there is any possible to plot other three methods also halder Wagner plot

[@sajutabraham1680]

Could you please tell how to obtain a modified W-H plot from XRD peaks?

[@emmakhan14]

brilliant job (y)

[@rushikesh_here]

it is very helpfull to me. thanks you ..

[@nanoworld6122]

Happy to help

[@madeehatabassum9478]

Thank you for the amazing video. For my some XRD data there is a problem ( Fit did not converge) appears. why it happens?

[@nanoworld6122]

either the data required a baseline correction or smoothing. Do Not Select low intensities Peaks

[@ericbu2631]

Many thanks

[@nanoworld6122]

You are welcome

[@asifasadov3975]

Just Respect

[@ashwanimaurya206]

thanks sir,,,,,,,,,,

[@vikashjaiswal5231]

Excellent..

[@nanoworld6122]

Thanks a lot

[@laushenn6054]

help! i have been getting Fit did not converge - mutual dependency exists between parameters error

[@maziidahh]

Sir, if there is a secondary phase in the XRD peaks, should we include the secondary peaks' information when calculating the FWHM?

[@wafazina4225]

Is it possible to use X'Pert high score for calculation of cristalline size and strain through this method W-H? Thanks

[@awaisahmed2907]

From where to get correlation coefficient values (R2) ?

[@rv3716]

It was a very helpful and detailed video for those who are working on this topic. Thank you so much!

[@nanoworld6122]

Glad it was helpful!

[@nanoworld6122]

Glad it was helpful!

[@nanoworld6122]

Glad it was helpful!

[@safoorashabir819]

sir please explain how to calculate mass fractions of aplha and beta phase in titanium aaloy from xrd data

[@malihaparvin4224]

May Almighty gives you the best reward for this work, really helpful.

[@chinsoon1068]

Hi, thanks for the video. I have a question. The angle used for calculation was not divided by 2. I am not sure if I understand it wrongly or is there any mistake.

[@nanoworld6122]

I have divided it, please watch it again from 13:35 to 13:48

[@arjunkrishna4815]

@@nanoworld6122 Sir can you explain why u neglected the error in the microstrain ?

[@maryamzulfiqar9520]

Respected Sir,. How much variation is acceptable between the calculated value of crystallite size by WH plot method and modified schrrer method?

[@jasiras.v.3698]

did you got the answer? i got 35 nm from scherrer and 120 nm from wh plot..

[@faheemwani1996]

sir how to calculate lattice parameter of composite film with different concentrations of doping

[@ryanrizaldynawawi3404]

nice

[@chiranjitchaliha5318]

Sir since adjacent r square value is not near to 1..its a bad fit...so will it be correct...to conclude the result without making adjacent r square to value as 1

[@Surya-uv3bz]

i am getting negative intercept , what to do? please help me out..

[@arjunkrishna4815]

sir/madam can you define what is microstrain?

[@Physics5915]

When we plot in polynomial fit, which is taken as slop

[@ParameswaranPed22d008]

You did not divided the angle @ FWHM convertion to Radians @ 15.40. Is that ok. Can you clarify me?

[@asst.prof.rohitnikam729]

What is meant by linear fit...why polynomial fit is not used

[@ManSingh-mw1il]

sir, the crystallite size we get from W-H plot is it the average crystallite size?

[@nanoworld6122]

Yes

[@rushikesh_here]

i want a pdf file of xrd.

[@user-bj4qm7yq4v]

thanks a lot , but when i calculate crystallites size, i have a problem in the unit value. when i use lamda as unit of Å, that time it was correct to compare to SEM. why?

[@nanoworld6122]

you are probably doing something wrong

[@user-bj4qm7yq4v]

@@nanoworld6122 thanks for your attention.

[@gopalakrishnanvenkata2537]

evry useful. can you please send me the typed derivation shown in the video..thank you

[@nanoworld6122]

Ask it through email

[@dalalalhilfi87]

i need the excel fil

[@awaisahmed2907]

Brother, i got crystalline size different in both methods, what is the reason behind different crystalline size in debye Scherrer and W-H method ? ..thnx

[@nanoworld6122]

off course it will different. Scherer equation is a rough theoretical estimation while W-H plot is more accurate. Because W-H plot separate micro strain from the grain size while this value is embedded is Scherer euation.

[@arimateiaalves3349]

hey man in my xdr data i obtained (Intercept -0,0028 ± 0,00891) is that possible? how can i calculate the crystal size ?

[@nanoworld6122]

There is a lot of explanatory material available on research-gate regarding negative W-H plot.

[@PROFBCRAI]

The unit of fwhm should be radian

[@PROFBCRAI]

Very nice 👍👌

[@mohamedleminemohamedou3454]

Thanks can you plz send me the word file

[@annisaf4689]

Can you explain to me why Williamson-Hall more accurate than scherrer method. What the advantages of using Williamsoh-Hall method I mean

[@nanoworld6122]

Scherer equation is a rough theoretical estimation while W-H plot is more accurate. Because W-H plot separate micro strain from the grain size while this value is embedded is Scherer equation.

[@nilkanthdevkar]

What if standard data is not available

[@rac5205]

I follow the same step but after fitting the peaks the data doesn't give the FWHM value.... Others are same... How can i take my FWHM value..?

[@nanoworld6122]

This is because, you performed the fitting using Gaussian instead of Guss

[@rac5205]

@@nanoworld6122 thanks for the reply..

[@TSAjmal]

You are telling βT = FWHM and also βD = FWHM, why?

[@rajeebkumarmalik8808]

yes, I have the same doubt. is it same or what??

[@sunandobanerjee7665]

your analysis is wrong because adj. R square value should come close to 1 , even at 0.8 to 0.9 is okay. you have to mask certain data points and fit the data, changing scale wont help.