Title :
Simultaneous determination of resistivity and susceptibility in an ac-susceptometer
Author :
de Faria, C.C. ; de Oliveira, A.J.A. ; Horeira, F.M.A. ; Ortiz, W.A.
Author_Institution :
Dept. de Fisica, Univ. Federal de Sao Carlos, Brazil
fDate :
11/1/1995 12:00:00 AM
Abstract :
We derive expressions for the in-phase and quadrature components of the output voltage of a balanced double transformer of cylindrical symmetry, typically employed in laboratory ac susceptometers. The expressions are developed for the case of cylindrical samples of finite length, excited by low-frequency fields. Investigation of the conductivity dependence of the output voltage, carried out with samples of commercial copper of different radii, validates the expressions
Keywords :
electric resistance measurement; electrical resistivity; instrument transformers; magnetic sensors; magnetic susceptibility; magnetic variables measurement; Cu; balanced double transformer; cylindrical symmetry; in-phase component; laboratory AC susceptometer; output voltage; quadrature component; resistivity; susceptibility; Coils; Conductivity; Frequency; Laboratories; Magnetic cores; Magnetic susceptibility; Maxwell equations; Power transformer insulation; Virtual reality; Voltage;
Journal_Title :
Magnetics, IEEE Transactions on
