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 Fitting of Magnetic Susceptibility data

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susmitkumar Posted - 10/05/2018 : 04:49:04 AM
Hi,

I am trying to fit the formula in the first picture to my magnetic susceptibility as a function of temperature data, but, I dont know how to use the summation in the NLfitting function in Origin. Can anyone help?



I also have a question on calling Langevin function into a susceptibility formula as shown in image 2, but, I dont know how to do that either. Please help.



Many thanks in advance.

Kind regards

Best regards,
Susmit Kumar

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