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Anomalous lattice expansion of bismuth-based superconductors.

Author(s) : CAO G. H., LI Y., WANG Y. B., MA R. Z., ZHAO Z. X., CHENG B. P., KONG J.

Type of article: Article

Summary

The dependence of X-ray diffraction on temperature was measured to study the properties of thermal expansion and distortion of lattices in bismuth-system superconductors. Results show that the anomalous expansion of lattices in the bismuth-based superconducting phases 2223 and 2212 exists both in the high- and low-temperature regions. The result, along with the observation of Mössbauer spectroscopy and internal friction, shows that the structural instability related to the softening and anomalous expansion of lattices occurs as a precursor effect to the onset of superconductivity.

Details

  • Original title: Anomalous lattice expansion of bismuth-based superconductors.
  • Record ID : 1994-2749
  • Languages: English
  • Source: Sci. China, A - vol. 36 - n. 9
  • Publication date: 1993/09
  • Document available for consultation in the library of the IIR headquarters only.

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