Standard reference materials: preparation and use of superconductive fixed point devices, SRM 767
Technical Report
·
OSTI ID:7215617
The preparation, testing, and use of SRM 767 devices are described. These devices incorporate samples of lead, indium, aluminum, zinc, and cadmium within a mutual inductance coil pair. These elements become superconductive at temperatures near 7.2 K, 3.4 K, 1.2 K, 0.85 K and 0.5 K, respectively, and the transition midpoints, when attained by observing the sample magnetic susceptibilities in negligible small magnetic fields, provide thermometric reference points which are reproducible to plus or minus 1 mK.
- Research Organization:
- National Bureau of Standards, Washington, DC (USA)
- OSTI ID:
- 7215617
- Report Number(s):
- COM-73-50037; NBS-SP-260-44
- Country of Publication:
- United States
- Language:
- English
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·
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Related Subjects
420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALUMINIUM
CADMIUM
CRYOGENICS
ELEMENTS
FABRICATION
INDIUM
LEAD
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
METALS
PHYSICAL PROPERTIES
STANDARDS
SUPERCONDUCTING DEVICES
TEMPERATURE MEASUREMENT
TESTING
USES
ZINC
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALUMINIUM
CADMIUM
CRYOGENICS
ELEMENTS
FABRICATION
INDIUM
LEAD
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
METALS
PHYSICAL PROPERTIES
STANDARDS
SUPERCONDUCTING DEVICES
TEMPERATURE MEASUREMENT
TESTING
USES
ZINC