Share

CRITICAL CURRENT DECAY WITH AGEING FOR POLYCRYSTALLINE YBCO WIRES AND RINGS.

Author(s) : GHERARDI L.

Type of article: Article

Summary

THE EFFECT OF ENVIRONMENTAL FACTORS SUCH AS MOISTURE AND TEMPERATURE ON THE CRITICAL CURRENT OF SINTERED YBCO WAS SYSTEMATICALLY INVESTIGATED. THE SYNTHESIS PROCEDURE USED, POWDER GRAIN SIZE, SILVER OXIDE ADDITION, SINTERING CONDITIONS AND FINAL DENSITY WERE ALL CONSIDERED. THE CRITICAL CURRENT WAS MEASURED, WITH AND WITHOUT MAGNETIC FIELD, ON WIRE SPECIMENS, AND WITH AN ALTERNATING CURRENT CONTACTLESS METHOD WITH NO FIELD ON MOULDED RINGS. COMPLEX SUSCEPTIBILITY MEASUREMENTS WERE ALSO CARRIED OUT. THE RESULTSSHOWED QUALITATIVELY SIMILAR CRITICAL CURRENT VERSUS TIME BEHAVIOUR FOR THE VARIOUS SAMPLES, BUT WITH STRONG QUANTITATIVE DIFFERENCES, WHICH WERE CORRELATED TO THE ABOVE FACTORS.

Details

  • Original title: CRITICAL CURRENT DECAY WITH AGEING FOR POLYCRYSTALLINE YBCO WIRES AND RINGS.
  • Record ID : 1991-1985
  • Languages: English
  • Source: Cryogenics - vol. 30 - n. 7
  • Publication date: 1990

Links


See other articles in this issue (13)
See the source

Indexing