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THE LOW MAGNETIC FIELD PROPERTIES OF SUPERCONDUCTING BULK YTTRIUM BARIUM COPPER OXIDE-SINTERED VERSUS PARTIALLY MELTED MATERIAL.

Author(s) : HEIN R. A.

Type of article: Article

Summary

A COMPARISON OF THE LOW MAGNETIC FIELD PROPERTIES OF SINTERED: 1263 K (990 DEG C), AND PARTIALLY MELTED SAMPLES: 1323 K (1050 DEG C) HAS BEEN PERFORMED. CHANGES IN THE MICRO-STRUCTURE PRODUCED BY RECRYSTALLIZATION FROM THE MELT RESULT IN A SIGNIFICANT INCREASE IN FLUX PINNING AT 77 K. LOW FREQUENCY (10-100 HERTZ), LOW-ALTERNATING CURRENT MAGNETIC FIELD (0.01-9.0 OERSTEDS) ALTERNATING CURRENT SUSCEPTIBILITY DATA SHOW THAT GROSS CHANGES IN THE ALTERNATING CURRENT LOSS COMPONENT ACCOMPANIES THE OBSERVED CHANGES IN MICROSTRUCTURE. PARTICULAR ATTENTION IS GIVEN TO PUBLISHED INTERPRETATIONS OF THE IN-PHASE OR LOSS COMPONENT OF THE ALTERNATING CURRENT MAGNETIC SUSCEPTIBILITY AND TO THE POSSIBLE ROLES WHICH MINORITY PHASES AND SAMPLE INHOMOGENEITIES MAY PLAY IN DETERMINING THE DETAILED ALTERNATING CURRENT RESPONSES.

Details

  • Original title: THE LOW MAGNETIC FIELD PROPERTIES OF SUPERCONDUCTING BULK YTTRIUM BARIUM COPPER OXIDE-SINTERED VERSUS PARTIALLY MELTED MATERIAL.
  • Record ID : 1991-0058
  • Languages: English
  • Source: J. Supercond. - vol. 2 - n. 4
  • Publication date: 1989/12
  • Document available for consultation in the library of the IIR headquarters only.

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