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MIXED VALENCE COPPER PEROVSKITE, OXYGEN DEFICIENT AND SUPERCONDUCTIVE BELOW 75 K.

PEROVSKITE DE CUIVRE A VALENCE MIXTE DEFICITAIRE EN OXYGENE SUPRACONDUCTRICE EN DESSOUS DE 75 K.

Author(s) : MICHEL C.

Type of article: Article

Summary

A NOVEL MIXED VALENCE COPPER OXIDE, OXYGEN DEFICIENT PEROVSKITE, HAS BEEN ISOLATED. THIS TETRAGONAL COMPOUND IS ISO-STRUCTURAL WITH THE SUPERCONDUCTIVE PSEUDO-TETRAGONAL O THIS SEMI-METALLIC OXIDE EXHIBITS A NARROW RESISTIVE TRANSITION AT 75 K ; BELOW THIS TEMPERATURE IT REACHES A ZERO RESISTANCE. RATHER HIGH CURRENT DENSITIES (D = 10 A/CM2 ) CANBE APPLIED TO THIS COMPOUND WITHOUT CHANGING ITS SUPERCONDUCTIVE CHARACTER AT 70 K. A STRUCTURAL MODEL IS PROPOSED FOR THIS OXIDE, AND IS COMPARED TO THE STRUCTURE OF THE OXYGEN DEFICIENT PEROVSKITE.

Details

  • Original title: PEROVSKITE DE CUIVRE A VALENCE MIXTE DEFICITAIRE EN OXYGENE SUPRACONDUCTRICE EN DESSOUS DE 75 K.
  • Record ID : 1988-0031
  • Languages: French
  • Source: C. R. Acad. Sci., Sér. II - vol. 304 - n. 19
  • Publication date: 1987/05/21
  • Document available for consultation in the library of the IIR headquarters only.

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