Transport and Electromechanical Properties of Stoichiometric Lithium Niobate at High Temperatures
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Anke Weidenfelder
Abstract
Z- and X-cut lithium niobate samples with varying lithium content from 48.3 to 50.0 mol % are investigated at high temperatures. Electrical and electromechanical properties are obtained by impedance spectroscopy. Mixed ionic and electronic conductivity in the temperature range from 500–900 ºC is found to be thermally activated. For 700 ºC and 1000 ºC the diffusion coefficient of lithium ions is calculated. The resonance frequency and the inverse Qf product are determined as a function of temperature up to 900 ºC for shear and thickness mode vibrations. In addition, the tracer diffusion of 18O is investigated by SIMS/SNMS. The 18O depth profile is analyzed and the lithium concentration dependent oxygen diffusion coefficient at 950 ºC for 49.9 mol % Li2O is determined to be DO≈ 3 × 10-17 m2/s.
© by Oldenbourg Wissenschaftsverlag, Goslar, Germany
Articles in the same Issue
- Preface
- Bombardment Induced Potassium Ion Transport Through a Sodium Ion Conductor: Conductivities and Diffusion Profiles
- Diffusion and Cluster Growth of Binary Alloys on Surfaces
- Synthesis of Novel Lithium Salts containing Pentafluorophenylamido-based Anions and Investigation of their Thermal and Electrochemical Properties
- Dual-ion Cells Based on Anion Intercalation into Graphite from Ionic Liquid-Based Electrolytes
- Ionic Transport and Structure in Doped Plastically Crystalline Solids
- Transport and Electromechanical Properties of Stoichiometric Lithium Niobate at High Temperatures
- Low-Temperature DC Conductivity of LiNbO3 Single Crystals
- Self-Diffusion of Lithium in Amorphous Lithium Niobate Layers
- Theoretical Investigation of Migration Pathways for Li Diffusion in h-LiTiS2
- Kinetics of Lithium Intercalation in Titanium Disulfide Single Crystals
- Structural control of ionic conductivity in LiAlSi2O6 and LiAlSi4O10 glasses and single crystals
- Studying Li Dynamics in a Gas-Phase Synthesized Amorphous Oxide by NMR and Impedance Spectroscopy
- Li Ion Dynamics in Al-Doped Garnet-Type Li7La3Zr2O12 Crystallizing with Cubic Symmetry
Articles in the same Issue
- Preface
- Bombardment Induced Potassium Ion Transport Through a Sodium Ion Conductor: Conductivities and Diffusion Profiles
- Diffusion and Cluster Growth of Binary Alloys on Surfaces
- Synthesis of Novel Lithium Salts containing Pentafluorophenylamido-based Anions and Investigation of their Thermal and Electrochemical Properties
- Dual-ion Cells Based on Anion Intercalation into Graphite from Ionic Liquid-Based Electrolytes
- Ionic Transport and Structure in Doped Plastically Crystalline Solids
- Transport and Electromechanical Properties of Stoichiometric Lithium Niobate at High Temperatures
- Low-Temperature DC Conductivity of LiNbO3 Single Crystals
- Self-Diffusion of Lithium in Amorphous Lithium Niobate Layers
- Theoretical Investigation of Migration Pathways for Li Diffusion in h-LiTiS2
- Kinetics of Lithium Intercalation in Titanium Disulfide Single Crystals
- Structural control of ionic conductivity in LiAlSi2O6 and LiAlSi4O10 glasses and single crystals
- Studying Li Dynamics in a Gas-Phase Synthesized Amorphous Oxide by NMR and Impedance Spectroscopy
- Li Ion Dynamics in Al-Doped Garnet-Type Li7La3Zr2O12 Crystallizing with Cubic Symmetry
