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SEARCH FOR THERMOMETERS WITH LOW MAGNETORESISTIVE EFFECTS: PLATINUM-COBALT ALLOY.

Author(s) : PAVESE F., CRESTO P.

Type of article: Article

Summary

MEASUREMENTS PERFORMED ON THERMOMETERS MADE OF DILUTE FERROMAGNETIC ALLOYS OF PLATINUM WITH 0.45, 0.50, 0.75, 1.06 AND 2.15 AT% COBALT IN THE TEMPERATURE RANGE 2-28 K AND IN MAGNETIC FIELDS UP TO 6 T SHOWED A LARGE REGION OF NEGATIVE MAGNETORESISTIVITY THAT LIMITS THE MAGNETIC ERROR AT LOW TEMPERATURES AND FIELD VALUES. CURIE TEMPERATURE HAS BEEN FOUND TO OCCUR AT 6.0, 14.2 K AND, BY EXTRAPOLATION, 32 K FOR ALLOYS WITH 0.75, 1.06 AND 2.15% COBALT. THIS ALLOY CAN BE USED FOR THERMOMETRY ONLY WITH VERY LOW COBALT CONCENTRATIONS: WITH 0.3% IT WOULD BE POSSIBLE TO LIMIT THE MAGNETIC ERROR WITHIN MORE OR LESS 0.2 K UP TO 2 T AND DOWN TO 5 K.

Details

  • Original title: SEARCH FOR THERMOMETERS WITH LOW MAGNETORESISTIVE EFFECTS: PLATINUM-COBALT ALLOY.
  • Record ID : 1985-0960
  • Languages: English
  • Source: Cryogenics - vol. 24 - n. 9
  • Publication date: 1984

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