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IBphysics

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**Summary::**Hello, I am doing a report for my IB course that requires some mathematics to be done. I have found this thread incredibly useful and I would like to reach out to ask for some clarification.

My experiment recorded the magnetic flux density directly above neodymium disc magnet, at different temperatures by submerging the magnet in water, the range of temperature is about 0-100 C. I plotted some diagrams in order to do analysis and here is where I ran into troubles, I am looking a theory or formula compare my results to, but most information I can find online are too complex. Here are the information I have collected and would like verification on.

Formula: M/M0 = ((Tc-T)/Tc)^γ

M = B(u0)

B = magnetic flux density (tesla/T)

M = magnetization (Am)

T = temperature (kelvin/K)

u0 = permeability of free space = 4π x 10-7

Remanence of neodymium ~ 1-1.3T

M0 = 1.3(u)

Tc = Curie Temperature = 320C = 593K

Please tell me if any of these definitions, formulas and constants are correct, I thank you in advance for your help.