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A NOVEL MIXED VALENCE COPPER PEROVSKITE,WITH OXYGEN DEFECT, SUPERCONDUCTIVE BELOW 91 K.

UNE NOUVELLE PEROVSKITE DE CUIVRE A VALENCE MIXTE DEFICITAIRE EN OXYGENE, SUPRACONDUCTRICE EN DESSOUS DE 91 K.

Author(s) : MICHEL C.

Type of article: Article

Summary

A NOVEL MIXED VALENCE COPPER PEROVSKITE WITH OXYGEN DEFECT HAS BEEN ISOLATED. THIS PSEUDO-TETRAGONAL OXIDE, CAN BE DESCRIBED BY TWO LIMIT STRUCTURAL MODELS, IN WHICH THE BARIUM AND YTTRIUM IONS ON ONE SIDE, AND THE OXYGEN ATOMS AND ANIONIC VACANCIES ON THE OTHER SIDE ARE ORDERED. THIS OXIDE IS CHARACTERIZED BY A METALLIC BEHAVIOR AT ROOM TEMPERATURE, AND EXHIBITS A VERY CLEAR RESISTIVE TRANSITION AT 91 K BECOMING SUPERCONDUCTOR BELOW THIS TEMPERATURE.

Details

  • Original title: UNE NOUVELLE PEROVSKITE DE CUIVRE A VALENCE MIXTE DEFICITAIRE EN OXYGENE, SUPRACONDUCTRICE EN DESSOUS DE 91 K.
  • Record ID : 1988-0030
  • Languages: French
  • Source: C. R. Acad. Sci., Sér. II - vol. 304 - n. 17
  • Publication date: 1987/05/07
  • Document available for consultation in the library of the IIR headquarters only.

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