Review of Scientific Instruments · 2000 · 71 citations · 23 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsElectronic MaterialsTransport PhenomenaCurie TemperatureElectrical ConductivityFerromagnetismHigh-temperature MaterialsMetalsSuperconducting MaterialsCritical Transport VelocityCurrent LeadsHigh-temperature SuperconductorsProbe DesignSuperconducting Critical TemperatureSuperconducting PropertiesSuperconducting TapesSuperconducting Wires
The probe applies reversible strain from –0.7 % to +0.7 % by soldering the wire to a coiled spring and twisting one end, enabling measurements in cryogenic or vacuum environments. It demonstrates stable operation, carrying ≥200 A at 4.2 K, maintaining ±45 mK temperature stability at 15 A and ±10 mK at 85 A, and yields transport current data for a bronze‑processed Nb₃Sn multifilamentary wire.
A variable-temperature probe has been developed to study the effect of strain on the transport properties of superconducting wires and tapes in high magnetic fields. The strain is applied to the wire by soldering it to a thick coiled spring and twisting one end of the spring with respect to the other. Strain can be applied reversibly from −0.7% to +0.7%. Measurements can be performed either in (pumped) cryogen or under vacuum. When immersed in liquid helium at 4.2 K, the probe can carry at least 200 A. From 6 to 16 K, with thin (low-loss) current leads the temperature of the sample is stable to ±45 mK for currents around 15 A, and to ±100 mK for currents around 25 A. With thick current leads, ±10 mK stability is achieved for currents up to 85 A. Full details of the probe design are described. Results obtained for a bronze processed niobium–tin multifilamentary wire are presented.
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Handbook of chemistry and physics
Journal of the Franklin Institute · 1930 · 11.7K citations
Precision Engineering · 1979 · 371 citations
<i>Materials at Low Temperatures</i>
R. P. Reed, A. F. Clark, Lawrence G. Rubin · Physics Today · 1984 · 261 citations