Demagnetizing factors for cylinders

Abstract

Fluxmetric (ballistic) and magnetometric demagnetizing factors N/sub f/ and N/sub m/ for cylinders as functions of susceptibility chi and the ratio gamma of length to diameter have been evaluated. Using a one-dimensional model when gamma >or=10, N/sub f/ was calculated for -1<or= chi < infinity and N/sub m/ was calculated for chi to infinity . Using a two-dimensional model when 0.01<or= gamma <or=50, an important range for magnetometer measurements, N/sub m/ and N/sub f/ were calculated for -1<or= chi < infinity . Demagnetizing factors for chi <0 are applicable to superconductors. For chi =0, suitable for weakly magnetic or saturated ferromagnetic materials, N/sub f/ and N/sub m/ were computed exactly using inductance formulas.<<ETX>>