Calibration of a permeameter for measuring soft magnetic materials using long cylindrical samples characterized by demagnetizing-corrected solenoid method

A technique is developed to calibrate the performance of a permeameter for measuring soft magnetic materials, having a C-shaped magnetic potential H-coil near the sample surface and a B-coil surrounding the sample, by using cylindrical standard samples. The true M(H) curve for the standard samples of large length-to-diameter ratios is obtained by the demagnetizing-corrected solenoid method recently developed.