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Radial magnetometric demagnetizing factor of thin disks

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3 Author(s)
Chen, Du-Xing ; Instituto Magnetismo Aplicado, CSIC, Madrid, Spain ; Pardo, Enric ; Sanchez, Alvaro

The radial magnetometric demagnetizing factor Nmr of a disk is calculated from the corresponding axial factor Nma as a function of the ratio of thickness to diameter t/d and the susceptibility of material χ by the formula Nma(t/d, χ= χ*) +2Nmr[t/d, χ=-χ*/(l +χ*)] =1+δ(t/d, χ*). This formula is derived from the magnetostatic laws with a correction (|δ|≪1) based on known values of Nma and Nmr for χ*=∞. The accuracy of the Nmr thus obtained is estimated to be better than 1%, which satisfies most practical needs

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Magnetics, IEEE Transactions on  (Volume:37 ,  Issue: 6 )