Chemical composition and magnetic property modifications of Na2Ti2Sb2O using PTFE as an alkali-metal ion extraction reagent

Tadashi C. Ozawa, Takashi Naka, Akiyuki Matsushita, Susan M. Kauzlarich, Takayoshi Sasaki

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Na+ extraction from Na2Ti2Sb2O has been attempted using polytetrafluoroethylene (PTFE; empirical formula CF2) as the extraction reagent. Systematic increase in both lattice parameters a along the intralayer direction and c along the interlayer direction was observed with respect to the reacted PTFE amounts, suggesting the successful deintercalation of the interlayer Na+. In addition, ferromagnet-like behavior, which is rare for systems consisting of ions with low magnetic moments, such as Ti3+(d1), was observed in the Na+-deintercalated Na2Ti2Sb2O. This result suggests that the method of alkali-metal ion extraction using polytetrafluoroethylene as an extraction reagent (AEP) can be utilized in order to induce interesting and important properties in compounds including highly air- and solvent-sensitive mixed-anion compounds such as Na2Ti2Sb2O.

Original languageEnglish (US)
Pages (from-to)189-192
Number of pages4
JournalJournal of Fluorine Chemistry
StatePublished - 2014


  • AEP
  • Deintercalation
  • Ferromagnetism
  • Layered compound
  • PTFE
  • Superconductivity

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Environmental Chemistry


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