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Measuring the critical current of high-temperature superconductors in liquid nitrogen as a function of temperature.

Author(s) : FOURNIER P., AUBIN M.

Type of article: Article

Summary

A method of measuring the critical current of polycrystalline high-temperature superconductors is described at various temperatures between 65 K and the transition temperature with the sample immersed in liquid nitrogen. The temperature of liquid nitrogen is varied following its phase diagram above the triple point (63.15 K). To increase the temperature of the nitrogen bath above 77 K, one increases the container gas pressure above 1 atm and pumps on the liquid to obtain temperatures below 77 K.

Details

  • Original title: Measuring the critical current of high-temperature superconductors in liquid nitrogen as a function of temperature.
  • Record ID : 1995-0023
  • Languages: English
  • Source: Rev. sci. Instrum. - vol. 65 - n. 4
  • Publication date: 1994/04
  • Document available for consultation in the library of the IIR headquarters only.

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