is there any body here whom specialized on material engineering and could help me to find exact value for permeability of NdFeB as permeate magnet?
Every material data-sheet provides this information: depending on the grade, it ranges from 1.04 to 1.1
The colleagues are correct: See, e.g., Wikipedia on "Permeability (electromagnetism)" for neodymium magnet (=NdFeB). There is a reference to a book by Juha Pyrhönen et al. (2009).
THANKS all Walter Selke Francesco Papini Brahim Ladghem-Chikouche , i calculate it to, myself. with this formula: M*M0=Br/Hcb , because in datasheets Br and Hcb are available and they lead us to that. the problem is Hcb and Br in all data sheets presented as interval and not a single number, so I think that to have the accurate value for M, I could do an average on interval for Br and average on the interval of Hcb and put these numbers in my formula, what is your opinion? am I right?
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