Diffusion in amorphous LiNbO3 studied by 7Li NMR - Comparison with the nano- and microcrystalline material

Martin Wilkening*, Detlef Bork, Sylvio Indris, Paul Heitjans

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Lithium diffusion in amorphous LiNbO3, synthesized by a sol-gel process, was investigated by temperature- and frequency-dependent 7Li NMR experiments. 7Li spin-lattice relaxation rates T1-1 and 7Li nuclear magnetic resonance spectra, in particular line shapes and motional narrowing of the central line, were measured. The results are discussed in comparison with those on nano- and microcrystalline LiNbO3 investigated by us earlier. The Li diffusivity in the amorphous material is much higher than in the microcrystalline one and can be described by practically the same diffusion parameters as in nanocrystalline LiNbO3. This suggests that the diffusion pathways in amorphous LiNbO3 and in the interfacial regions of nanocrystalline LiNbO3 have similar structures.

Original languageEnglish
Pages (from-to)3246-3251
Number of pages6
JournalPhysical Chemistry, Chemical Physics
Volume4
Issue number14
DOIs
Publication statusPublished - 20 Jul 2002
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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