Apparatus for measurement of surface resistance versus rf magnetic field of high- Tc superconductors

Journal Article · Wed Aug 01 00:00:00 EDT 1990 · Review of Scientific Instruments; (USA)

DOI:https://doi.org/10.1063/1.1141390· OSTI ID:6544378

Delayen, J R; Bohn, C L; Roche, C T ^[1]

---

1. Argonne National Laboratory, Engineering Physics Division, 9700 South Cass Avenue, Argonne, IL (USA)

A coaxial niobium quarter-wave resonant cavity has been fabricated and used for measurement of the surface resistance of disk-shaped samples of high-{Tc} superconductors at 820 MHz and 4.2 K, and at surface rf magnetic fields ranging to 300 G. The cavity can accommodate samples as large as 36 mm in diameter. A measurement procedure has been developed with which rf surface resistances less than 20 {mu}{Omega} can be resolved for a 24-mm-diam sample at 820 MHz. This cavity is useful in determining the suitability of high-{ital T}{sub {ital c}} superconductors for high-power rf applications.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6544378
• Journal Information: Review of Scientific Instruments; (USA), Journal Name: Review of Scientific Instruments; (USA) Vol. 61:8; ISSN RSINA; ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CAVITY RESONATORS
DESIGN
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONIC EQUIPMENT
EQUIPMENT
FABRICATION
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS
PHYSICAL PROPERTIES
RESONATORS
RF SYSTEMS
SUPERCONDUCTING CAVITY RESONATORS
SUPERCONDUCTING DEVICES
SUPERCONDUCTORS