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

Martin Wilkening; Detlef Bork; Sylvio Indris; Paul Heitjans

doi:10.1039/b201193j

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 journal › Article › peer-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 language	English
Pages (from-to)	3246-3251
Number of pages	6
Journal	Physical Chemistry, Chemical Physics
Volume	4
Issue number	14
DOIs	https://doi.org/10.1039/b201193j
Publication status	Published - 20 Jul 2002
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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

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.",

author = "Martin Wilkening and Detlef Bork and Sylvio Indris and Paul Heitjans",

year = "2002",

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doi = "10.1039/b201193j",

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journal = "Physical Chemistry, Chemical Physics",

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T1 - Diffusion in amorphous LiNbO3 studied by 7Li NMR - Comparison with the nano- and microcrystalline material

AU - Wilkening, Martin

AU - Bork, Detlef

AU - Indris, Sylvio

AU - Heitjans, Paul

PY - 2002/7/20

Y1 - 2002/7/20

N2 - 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.

AB - 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.

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DO - 10.1039/b201193j

M3 - Article

AN - SCOPUS:0036305091

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JO - Physical Chemistry, Chemical Physics

JF - Physical Chemistry, Chemical Physics

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

Abstract

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