Accession Number : ADD018452

Title :   Vibrating-Reed Susceptometer for Measuring Anisotropic Aspects of Susceptibility.

Descriptive Note : Patent, Filed 7 Jul 95, patented 4 Feb 97,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Jacobensen, Ronald L , Jr ; Ehrlich, Alexander C

Report Date : 04 Feb 1997

Pagination or Media Count : 10

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.

Descriptors :   *ANISOTROPY, *ELECTROMAGNETIC SUSCEPTIBILITY, *PATENTS, MAGNETIC FIELDS, VIBRATION, RESONANT FREQUENCY, DIRECT CURRENT

Subject Categories : Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE