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Studies on magnetization and microwave properties of gamma-ray-irradiated SBCO superconductors.

Author(s) : ROUL B. K.

Type of article: Article

Summary

Studies on the effect of gamma-ray irradiation on critical transition temperature, transport and magnetic critical-current density (at 4.2 K), high-field magnetization (at 4.2 K), and microwave-induced direct-current voltage (inverse alternating-current Josephson effect) have been performed on SBCO(7-) ceramic superconducting samples prepared by the coprecipitation technique. Gamma-ray irradiation was found to have no effect on its structural modification and on the critical transition temperature. However, transport and magnetic critical-current density are increased as well as high-field magnetic hysteresis, connected with the creation of radiation-induced mobile defects. An appreciable decrease in the microwave-induced direct-current voltage at 77 K was also observed after irradiation. Enhancement of transport and magnetic critical-current density may be due to the stronger pinning of flux lines at the gamma-ray-induced defect site in SBCO ceramic superconductors.

Details

  • Original title: Studies on magnetization and microwave properties of gamma-ray-irradiated SBCO superconductors.
  • Record ID : 1994-0757
  • Languages: English
  • Source: J. Supercond. - vol. 6 - n. 2
  • Publication date: 1993/04
  • Document available for consultation in the library of the IIR headquarters only.

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