Synthesis of high-purity YbBa2Cu3O7-d and LuBa2Cu3O7-d superconductors by polymerizable complex method

Yasushi Sato, Valery Petrykin, Hiroshi Yasuoka, Masato Kakihana

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1 Citation (Scopus)

Abstract

Polycrystalline samples of YbBa2Cu3O7-d and LuBa2Cu3O7-d were prepared by polymerizable complex method. The combined results of both X-ray diffraction and Raman scattering analyses indicated that YbBa2Cu3O7-d sample was of single phase when the samples were sintered in a low oxygen partial pressure (1%) at relatively low temperature (845°C). On the other hand, LuBa2Cu3O7-d sample was only slightly contaminated with a very small amount of Lu2BaCuO5 and BaCuO2 impurities when the sample was prepared under the same condition as YbBa2Cu3O7-d. Ac complex magnetic susceptibility measurements exhibited that a transition into the superconducting state for YbBa2Cu3O7-d and LuBa 2Cu3O7-d samples was sharp and smooth, implying that both of the samples were of "superconducting" single phase. The Tc onset values of the YbBa2Cu3O7-d and LuBa2Cu3O7-d, were 93.4 and 92.3 K, respectively.

Original languageEnglish
Pages (from-to)503-508
Number of pages6
JournalJournal of the Ceramic Society of Japan
Volume120
Issue number1407
DOIs
Publication statusPublished - 2012 Nov

Keywords

  • Ac complex susceptibility
  • Polymerizable complex method
  • Raman scattering

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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