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INSTABILITY OF YBACUO STRUCTURE NEAR SUPERCONDUCTING TRANSITION.

[In Russian. / En russe.]

Author(s) : SUHAREVSKIJ B. Ja.

Type of article: Article

Summary

ANOMALIES OF THERMAL EXPANSION AND HEAT CAPACITY OF YBACUO(6+) IN THE TEMPERATURE RANGE PRECEDING THE SUPERCONDUCTING TRANSITION ARE FOUND USING THE X-RAY STRUCTURAL ANALYSIS AND LOW-TEMPERATURE ADIABATIC CALORIMETRY. ANOMALY OF THERMAL EXPANSION IS OBSERVED AT TEMPERATURES WHICH ARE BY 10-15 K HIGHER THAN TRANSITION TEMPERATURE AND THAT OF HEAT CAPACITY APPEARS AT T = 97 K FOR A SAMPLE WITH TRANSITION TEMPERATURE AT 92.2 K. THE BROADENING OF X-RAY LINES AT TEMPERATURES BELOW 200 K IS ALSO REVEALED. THIS BROADENING SEEMS TO BE LARGER FOR SAMPLES WITH A SMALLER VALUE OF OXYGEN INDEX.

Details

  • Original title: [In Russian. / En russe.]
  • Record ID : 1989-1702
  • Languages: Russian
  • Source: Fiz. nizk. Temp. - vol. 14 - n. 10
  • Publication date: 1988
  • Document available for consultation in the library of the IIR headquarters only.

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