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COLOUR IMAGING THE MAGNETIC FIELD DISTRIBUTION IN SUPERCONDUCTORS.

Author(s) : BATALLA E.

Type of article: Article

Summary

A MAGNETO-OPTICALLY ACTIVE GLASS WAS USED TO IMAGE THE MAGNETIC FIELD DISTRIBUTION IN SUPERCONDUCTORS USING THE FARADAY EFFECT. POLARIZED WHITE LIGHT ILLUMINATION OF THE GLASS RESULTED IN VARIOUS COLOURS DEPENDING ON THE SETTING OF THE ANALYZING POLAROID. THIS TECHNIQUE WAS USED TO OBSERVE FIELD DISTRIBUTIONS IN POLYCRYSTALLINE AND SINGLE-CRYSTAL YBACUO SAMPLES. IN THE CERAMIC SAMPLE, THE FIELD WAS UNIFORM WITHIN THE RESOLUTION (50 MICROMETERS) OF THIS TECHNIQUE AND FIELD MAGNITUDES WERE MEASURED WITH A 10% ACCURACY. IN THE SINGLE CRYSTAL, THE MAGNETIC FIELD DISTRIBUTION WAS NOT UNIFORM SHOWING FIELD GRADIENTS IMAGED AS COLOUR GRADIENTS ON THE PICTURES OF THE GLASS.

Details

  • Original title: COLOUR IMAGING THE MAGNETIC FIELD DISTRIBUTION IN SUPERCONDUCTORS.
  • Record ID : 1991-1943
  • Languages: English
  • Source: Rev. sci. Instrum. - vol. 61 - n. 8
  • Publication date: 1990
  • Document available for consultation in the library of the IIR headquarters only.

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