Vibrating-reed susceptometer for measuring anisotropic aspects o

Details Vibrating-reed susceptometer for measuring anisotropic aspects o Vibrating-reed susceptometer for measuring anisotropic aspects o

1995-07-07

1997-02-04

O'Shea, Sandra L.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

324259, G01N 2772, G01R 3302

Patent

active

056002416

ABSTRACT:
A method for determining the anisotropy of the magnetic susceptibility of a sample includes determining the resonant frequency of the sample in substantially zero magnetic field, the resonant frequency being for flexure vibration in a selected plane of vibration. A second step is applying a uniform dc magnetic field to the sample, the magnetic field having a component in the selected plane of vibration. A third step is determining the resonant frequency of the sample in the presence of the applied magnetic field, the resonant frequency being for flexure vibration in the selected plane. The fourth step is determining the anisotropy of the magnetic susceptibility of the sample, based on the amplitude of the magnetic field component and on the above-determined resonant frequencies.

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