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CRITICAL STATE MODEL AND THE MAGNETIC BEHAVIOUR OF HIGH CRITICAL TEMPERATURE SUPERCONDUCTORS.

Author(s) : CHADDAH P.

Type of article: Article

Summary

INTRAGAIN CRITICAL CURRENT DENSITIES ARE USUALLY INFERRED FROM MAGNETIZATION MEASUREMENTS USING BEAN'S CRITICAL STATE MODEL. RESULTS ARE PRESENTED FOR THE CASE OF CRITICAL CURRENT DENSITY DECAYING EXPONENTIALLY WITH FIELD AND EXPLANATIONS ARE GIVEN FOR THE OBSERVED CHANGES IN THE SHAPE OF THE MAGNETIZATION HYSTERESIS CURVE AS (1) THE SAMPLE TEMPERATURE IS CHANGED ; (2) THE SAMPLE DIMENSION IS CHANGED ; (3) THE MAXIMUM FIELD TO WHICH THE SAMPLE IS CYCLED IS VARIED ; AND (4) THE FIELD DIRECTION IS CHANGED FOR A SINGLE CRYSTAL SAMPLE. DIRECT CURRENT AND LOW-FREQUENCY ALTERNATING CURRENT MAGNETIZATION DATA ON VARIOUS RBA(2)CU(3)O(7) SUPERCONDUCTORS ARE PRESENTED.

Details

  • Original title: CRITICAL STATE MODEL AND THE MAGNETIC BEHAVIOUR OF HIGH CRITICAL TEMPERATURE SUPERCONDUCTORS.
  • Record ID : 1990-0948
  • Languages: English
  • Source: Cryogenics - vol. 29 - n. 9
  • Publication date: 1989

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