Diffusion in Nanocrystalline Ion Conductors Studied by Solid State NMR and Impedance Spectroscopy

Abstract:

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Materials with an average particle size of less than about 50 nm often show new or at least enhanced physical properties. In many cases nanocrystalline ionic conductors exhibit a high increase of cation, e. g. Li+, or anion, e. g. F−, diffusivity. In the present contribution we review recent studies on ion dynamics in nanocrystalline ion conductors, both single-phase systems and composites, being prepared by high-energy ball milling. These include, e.g., LiTaO3, Li2O:Al2O3, LiF:Al2O3, BaF2, CaF2, BaF2:CaF2 and (BaF2:CaF2):Al2O3. Dynamic properties were probed by 7Li and/or 19F NMR line shape and relaxation as well as ion conductivity measurements.

Info:

Periodical:

Defect and Diffusion Forum (Volumes 283-286)

Edited by:

Andreas Öchsner, Graeme E. Murch and Ali Shokuhfar

Pages:

705-715

DOI:

10.4028/www.scientific.net/DDF.283-286.705

Citation:

P. Heitjans and M. Wilkening, "Diffusion in Nanocrystalline Ion Conductors Studied by Solid State NMR and Impedance Spectroscopy", Defect and Diffusion Forum, Vols. 283-286, pp. 705-715, 2009

Online since:

March 2009

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Price:

$35.00

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