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Title: Apparatus for characterizing conductivity of superconducting 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. 10 figures.

Inventors:
Issue Date:
OSTI Identifier:
5403904
Patent Number(s):
5268646
Assignee:
Univ. of California Patent, Trademark and Copyright Office, Alameda, CA (United States)
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Resource Relation:
Patent File Date: 24 Apr 1991
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 47 OTHER INSTRUMENTATION; ELECTRIC MEASURING INSTRUMENTS; DESIGN; SUPERCONDUCTORS; SUPERCONDUCTIVITY; TRANSITION TEMPERATURE; MEASURING METHODS; ELECTRIC CONDUCTIVITY; ELECTRICAL EQUIPMENT; ELECTRICAL PROPERTIES; EQUIPMENT; MEASURING INSTRUMENTS; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES; 665411* - Basic Superconductivity Studies- (1992-); 440800 - Miscellaneous Instrumentation- (1990-)

Citation Formats

Doss, J D. Apparatus for characterizing conductivity of superconducting materials. United States: N. p., 1993. Web.
Doss, J D. Apparatus for characterizing conductivity of superconducting materials. United States.
Doss, J D. Tue . "Apparatus for characterizing conductivity of superconducting materials". United States.
@article{osti_5403904,
title = {Apparatus for characterizing conductivity of superconducting 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. 10 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {12}
}