Apparatus and method for characterizing conductivity of materials

Patent · Wed Apr 13 00:00:00 EDT 1988

OSTI ID:6284551

Doss, J. D.

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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Assignee: Dept. of Energy
• Patent Number(s): PATENTS-US-A7181451
• Application Number: ON: DE89009599
• OSTI ID: 6284551
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

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)