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MAGNETORESISTANCE: THE HALL EFFECT IN COMPOSITE ALUMINIUM CRYOCONDUCTORS.

Author(s) : ECKELS P. W.

Type of article: Article

Summary

HIGH PURITY ALUMINIUM HAS ELECTRICAL CHARACTERISTICS THAT ARE ATTRACTIVE FOR APPLICATIONS IN CRYOGENIC EQUIPMENT, BUT THE METAL HAS VERY LOW INTRINSIC STRENGTH AND MUST BE SUPPORTED IN NEARLY ALL APPLICATIONS. A COMPOSITE CONDUCTOR HAVING AN OUTER SHEATH OF HIGH STRENGTH ALUMINIUM-IRON-CERIUM ALLOY (ALCOA CU-78) AND A SINGLE INNER CORE OF HIGH PURITY ALUMINIUM HAS BEEN SUCCESSFULLY FABRICATED INTO LENGTHS SUITABLE FOR COIL WINDING AND TESTING. RESISTIVITY AND MAGNETORESISTIVITY AS A FUNCTION OF TEMPERATURE HAVE BEEN DETERMINED. WHILE RESIDUAL RESISTANCE RATIOS OF THE PURE MATERIAL WITHIN THE COMPOSITE UNDER ZERO APPLIED FIELD ARE IN THE RANGE OF 10,000, THE MAGNETORESISTANCE OF THE HIGH PURITY ALUMINIUM WITH THE COMPOSITE APPEARS TO BE VERY LARGE WHEN COMPARED TO THAT OF PURE ALUMINIUM WIRE.

Details

  • Original title: MAGNETORESISTANCE: THE HALL EFFECT IN COMPOSITE ALUMINIUM CRYOCONDUCTORS.
  • Record ID : 1990-1797
  • Languages: English
  • Source: Cryogenics - vol. 29 - n. 7
  • Publication date: 1989

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