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THERMAL EXPANSION OF SUPERCONDUCTING CERAMICS LANTHANUM-STRONTIUM-COPPER-OXYGEN AND YTTRIUM-BARIUM-COPPER-OXYGEN BETWEEN 5 AND 300 K.

[In Russian. / En russe.]

Author(s) : OBOLENSKIJ M. A.

Type of article: Article

Summary

PRECISION MEASUREMENTS OF THERMAL EXPANSION COEFFICIENT (TEC) WERE PERFORMED ON THE HIGH-TEMPERATURE SUPERCONDUCTING CERAMICS IN THE TEMPERATURE RANGE OF 5 TO 300 K. THE TEMPERATURE DEPENDENCES OF TEC FOR BOTH CERAMICS DISPLAYED SOME SPECIFIC FEATURES. ANALYTICAL TREATMENT OF THE MEASURED RESULTS AND THEIR COMPARISON WITH THOSE AVAILABLE IN LITERATURE ON TEMPERATURE DEPENDENCES OF LATTICE PARAMETERS, SOUND VELOCITY AND ABSORPTION PERMITTED ONE TO SUGGEST THAT THERE WERE SECOND-ORDER PHASE TRANSITIONS IN THE ABOVE CERAMICS THAT PRECEDED THE TRANSITION TO A SUPERCONDUCTING STATE.

Details

  • Original title: [In Russian. / En russe.]
  • Record ID : 1989-0444
  • Languages: Russian
  • Source: Fiz. nizk. Temp. - vol. 14 - n. 8
  • Publication date: 1988
  • Document available for consultation in the library of the IIR headquarters only.

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