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Li Diffusion in (110) Oriented LiNbO3 Single Crystals

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Abstract:

Li diffusion is investigated in Li2O-deficient, (110) oriented LiNbO3 single crystals in the temperature range between 523 and 673 K by secondary ion mass spectrometry. A thin layer of ion-beam sputtered isotope enriched 6LiNbO3 was used as a tracer source, which allows one to study pure isotope interdiffusion. The diffusivities coincide with those of (001) oriented single crystals and follow the Arrhenius law with an activation enthalpy of 1.33 eV. The results prove the existence of a three-dimensional diffusion mechanism.

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Periodical:

Defect and Diffusion Forum (Volume 333)

Pages:

33-38

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.333.33

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Online since:

January 2013

Authors:

Johanna Rahn, Lars Dörrer, Benjamin Ruprecht, Paul Heitjans, Harald Schmidt

Keywords:

Li Tracer Diffusion, Lithium Niobate, Secondary Ion Mass Spectrometry

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