Apparatus and methodology for the non-contact testing of materia

Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k

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324201, 324239, 505726, 505727, 505843, G01R 3312, G01N 2772, H01L 3900

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active

050047264

ABSTRACT:
Apparatus and methodology for the rapid and inexpensive characterization of superconducting materials. The method and apparatus induces an alternating magnetic field in the sample to be tested. If the material is a superconductor odd harmonics are generated in the alternating magnetic response of the material near the transition temperature. The superconducting transitions are manifested by a peak or peaks in the odd harmonic components of the alternating magnetic response as a function of temperature. The peaks of the harmonic components are detected to indicate the presence and number of superconducting transitions.

REFERENCES:
patent: 4851762 (1989-07-01), Kim et al.
Journal of Applied Physics 52(11), Nov. 1981, pp. 6798-6805, "Superconducting Transition of Multiconnected Josephson Network".

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