Electrochemical intercalation of lithium in layered niobates AB2Nb3O10 (A = K, Rb, Cs; B = Ca, Sr) and their superconductivity

I. Nagai, Y. Abe, M. Kato, Y. Koike, M. Kakihana

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9 Citations (Scopus)

Abstract

We have succeeded in preparing Li-intercalated layered niobium oxide LixAB2Nb3O10 (A = K, Rb, Cs; B = Ca, Sr) by an electrochemical technique. The host compounds AB2Nb3O10 were synthesized by a solid state reaction method at 850-1150°C for 10-12 h. All of the intercalated compounds showed superconductivity at 4-6 K. In the cases of A = Rb, B = Ca, and A = Cs, B = Ca, no superconductivity appeared up to x = 0.17; for x = 0.34 and 0.46 Tc was constant with maximum value, and for x = 0.62 Tc decreased slightly. On the other hand, the correlation between Tc (onset) and a-axis length demonstrates that Tc tends to increase with a-axis length increasing, which was found in Li0.34 AB2Nb3O10 with optimum Li content.

Original languageEnglish
Pages (from-to)393-396
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume357-360
DOIs
Publication statusPublished - 2001 Aug
Externally publishedYes

Keywords

  • Electrochemical intercalation
  • Layered niobate
  • Li content
  • a-axis length

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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