Demagnetizing factors for cylinders |
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| Authors: | Chen D-X Brug JA Goldfarb RB |
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| Affiliation: | Nat. Inst. of Stand. & Technol., Boulder, CO, USA; |
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| Abstract: | Fluxmetric (ballistic) and magnetometric demagnetizing factors Nf and Nm for cylinders as functions of susceptibility χ and the ratio γ of length to diameter have been evaluated. Using a one-dimensional model when γ⩾10, Nf was calculated for -1⩽χ<∞ and Nm was calculated for χ→∞. Using a two-dimensional model when 0.01⩽γ⩽50, an important range for magnetometer measurements, Nm and Nf were calculated for -1⩽χ<∞. Demagnetizing factors for χ<0 are applicable to superconductors. For χ=0, suitable for weakly magnetic or saturated ferromagnetic materials, Nf and Nm were computed exactly using inductance formulas |
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