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Self-Diffusion of Lithium in Amorphous Lithium Niobate Layers

  • Johanna Rahn , Erwin Hüger , Lars Dörrer , Benjamin Ruprecht , Paul Heitjans and Harald Schmidt
Published/Copyright: May 14, 2012
Zeitschrift für Physikalische Chemie
From the journal Zeitschrift für Physikalische Chemie Volume 226 Issue 5-6

Abstract

We investigated lithium self-diffusion in amorphous lithium niobate layers between 298 and 423 K. For the experiments, amorphous 6LiNbO3/ 7LiNbO3 isotope hetero-structures were deposited by ion beam sputtering and analysed after diffusion annealing by secondary ion mass spectrometry (SIMS). This arrangement allows one to study pure isotope interdiffusion. The results show that the diffusivities obey the Arrhenius law with an activation enthalpy of 0.7 eV, which is considerably lower than the activation enthalpy found for LiNbO3 single crystals in literature. Consequently, the Li diffusivities are higher by at least eight orders of magnitude in the amorphous samples in the temperature range studied.

Keywords: Amorphous Lithium Niobate; Self-Diffusion; Isotope Hetero-Structures; Secondary Ion Mass Spectrometry
* Correspondence address: Technische Universität Clausthal, Institut f.Metallurgie, Thermochemie, Mikrokinetik, Robert-Koch-Str. 42, 38678 Clausthal-Zellerfeld, Deutschland,
Published Online: 2012-5-14
Published in Print: 2012-6-1

© by Oldenbourg Wissenschaftsverlag, Clausthal-Zellerfeld, Germany

Articles in the same Issue

  1. Preface
  2. Bombardment Induced Potassium Ion Transport Through a Sodium Ion Conductor: Conductivities and Diffusion Profiles
  3. Diffusion and Cluster Growth of Binary Alloys on Surfaces
  4. Synthesis of Novel Lithium Salts containing Pentafluorophenylamido-based Anions and Investigation of their Thermal and Electrochemical Properties
  5. Dual-ion Cells Based on Anion Intercalation into Graphite from Ionic Liquid-Based Electrolytes
  6. Ionic Transport and Structure in Doped Plastically Crystalline Solids
  7. Transport and Electromechanical Properties of Stoichiometric Lithium Niobate at High Temperatures
  8. Low-Temperature DC Conductivity of LiNbO3 Single Crystals
  9. Self-Diffusion of Lithium in Amorphous Lithium Niobate Layers
  10. Theoretical Investigation of Migration Pathways for Li Diffusion in h-LiTiS2
  11. Kinetics of Lithium Intercalation in Titanium Disulfide Single Crystals
  12. Structural control of ionic conductivity in LiAlSi2O6 and LiAlSi4O10 glasses and single crystals
  13. Studying Li Dynamics in a Gas-Phase Synthesized Amorphous Oxide by NMR and Impedance Spectroscopy
  14. Li Ion Dynamics in Al-Doped Garnet-Type Li7La3Zr2O12 Crystallizing with Cubic Symmetry
https://doi.org/10.1524/zpch.2012.0214
Keywords for this article
Amorphous Lithium Niobate; Self-Diffusion; Isotope Hetero-Structures; Secondary Ion Mass Spectrometry

Articles in the same Issue

  1. Preface
  2. Bombardment Induced Potassium Ion Transport Through a Sodium Ion Conductor: Conductivities and Diffusion Profiles
  3. Diffusion and Cluster Growth of Binary Alloys on Surfaces
  4. Synthesis of Novel Lithium Salts containing Pentafluorophenylamido-based Anions and Investigation of their Thermal and Electrochemical Properties
  5. Dual-ion Cells Based on Anion Intercalation into Graphite from Ionic Liquid-Based Electrolytes
  6. Ionic Transport and Structure in Doped Plastically Crystalline Solids
  7. Transport and Electromechanical Properties of Stoichiometric Lithium Niobate at High Temperatures
  8. Low-Temperature DC Conductivity of LiNbO3 Single Crystals
  9. Self-Diffusion of Lithium in Amorphous Lithium Niobate Layers
  10. Theoretical Investigation of Migration Pathways for Li Diffusion in h-LiTiS2
  11. Kinetics of Lithium Intercalation in Titanium Disulfide Single Crystals
  12. Structural control of ionic conductivity in LiAlSi2O6 and LiAlSi4O10 glasses and single crystals
  13. Studying Li Dynamics in a Gas-Phase Synthesized Amorphous Oxide by NMR and Impedance Spectroscopy
  14. Li Ion Dynamics in Al-Doped Garnet-Type Li7La3Zr2O12 Crystallizing with Cubic Symmetry
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