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Title: Apparatus and method for characterizing conductivity of materials

Abstract

Apparatus and method for noncontact, radio-frequency shielding current characterization of materials. Self- or mutual inductance changes in one or more inductive elements, respectively, occur when materials capable of supporting shielding currents are placed in proximity thereto, or undergo change in resistivity while in place. Such changes can be observed by incorporating the inductor(s) in a resonant circuit and determining the frequency of oscillation or by measuring the voltage induced on a coupled inductive element. The present invention is useful for determining the critical temperature and superconducting transition width for superconducting samples. 8 figs.

Inventors:
Issue Date:
Research Org.:
Los Alamos National Lab., NM (USA)
OSTI Identifier:
6284551
Patent Number(s):
-US-A7181451
Application Number:
ON: DE89009599
Assignee:
Dept. of Energy TIC; EDB-89-064558
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; MEASURING INSTRUMENTS; DESIGN; SUPERCONDUCTORS; ELECTRIC CONDUCTIVITY; CRITICAL FIELD; EDDY CURRENT TESTING; ELECTRONIC CIRCUITS; INVENTIONS; OSCILLATIONS; TRANSITION TEMPERATURE; ELECTRICAL PROPERTIES; ELECTROMAGNETIC TESTING; MAGNETIC FIELDS; MATERIALS TESTING; NONDESTRUCTIVE TESTING; PHYSICAL PROPERTIES; TESTING; THERMODYNAMIC PROPERTIES; 440300* - Miscellaneous Instruments- (-1989)

Citation Formats

Doss, J.D. Apparatus and method for characterizing conductivity of materials. United States: N. p., 1988. Web.
Doss, J.D. Apparatus and method for characterizing conductivity of materials. United States.
Doss, J.D. Wed . "Apparatus and method for characterizing conductivity of materials". United States.
@article{osti_6284551,
title = {Apparatus and method for characterizing conductivity of materials},
author = {Doss, J.D.},
abstractNote = {Apparatus and method for noncontact, radio-frequency shielding current characterization of materials. Self- or mutual inductance changes in one or more inductive elements, respectively, occur when materials capable of supporting shielding currents are placed in proximity thereto, or undergo change in resistivity while in place. Such changes can be observed by incorporating the inductor(s) in a resonant circuit and determining the frequency of oscillation or by measuring the voltage induced on a coupled inductive element. The present invention is useful for determining the critical temperature and superconducting transition width for superconducting samples. 8 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {4}
}