A single crystal X-ray and powder neutron diffraction study on NASICON-type Li1+xAlxTi2−x(PO4)3 (0 ≤ x ≤ 0.5) crystals: Implications on ionic conductivity

G. J. Redhammer, D. Rettenwander, S. Pristat, E. Dashjav, C. M N Kumar, D. Topa, F. Tietz

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Single crystals of NASICON-type material Li1+xTi2−xAlx(PO4)3 (LATP) with 0 ≤ x ≤ 0.5 were successfully grown using long-term sintering techniques. Sample material was studied by chemical analysis, single crystal X-ray and neutron diffraction. The Ti4+ replacement scales very well with the Al3+ and Li+ incorporation. The additional Li+ thereby enters the M3 cavity of the NASICON framework at x, y, z ∼ (0.07, 0.34, 0.09) and is regarded to be responsible for the enhanced Li+ conduction of LATP as compared to Al-free LTP. Variations in structural parameters, associated with the Ti4+ substitution with Al3+ + Li+ will be discussed in detail in this paper.

Original languageEnglish
Pages (from-to)99-107
Number of pages9
JournalSolid State Sciences
Volume60
DOIs
Publication statusPublished - 1 Oct 2016
Externally publishedYes

Keywords

  • Al substitution
  • LATP
  • LiTi(PO4)
  • NASICON
  • Neutron diffraction
  • Single crystal X-ray diffraction

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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