Phase relations in the Li2O – Nb2O5 binary system

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Table of contents

1. Physics and chemistry of crystalline LiNbO3
1.1. The LiNbO3 crystal structure
1.2. Phase relations in the Li2O – Nb2O5 binary system
1.3. Phase relations in the K2O – Li2O – Nb2O5 ternary system
1.4. Crystal growth processes
1.4.1. High temperature top seeded solution growth (HTTSSG) method
1.5. Crystal composition and characterization methods
2. Experimental methods and instruments
2.1. Solid state reactions, thermoanalytical investigations and phase characterization
2.2. Crystal growth and refinement of the phase diagram
2.3. Spectroscopy
3. Results
3.1. Phase identification and phase diagram determined on polycrystalline samples
3.1.1. Thermal analysis and X-ray phase identification in the X2O – Li2O – Nb2O5 ternary systems
3.1.2. Phase diagram of the Cs2O – Li2O – Nb2O5 ternary system
3.2. Single crystal growth and characterization
3.2.1. Crystal growth experiments in the X2O – Li2O – Nb2O5 ternary systems
3.2.2. Solid composition determination by UV/Vis spectroscopic measurements.
3.2.3. Phase relations along the vertical section of LiNbO3-X2O systems
3.3. Spectroscopic characterization and composition determination of the crystals grown from alkali metal oxide fluxes
3.3.1. IR absorption measurements
3.3.1.1. OH- vibrational spectra of crystals grown from Rb2O and Cs2O containing fluxes
3.3.1.2. OH- spectra of crystals grown from Na2O containing flux
3.3.2. Raman spectroscopic properties of the crystals
3.3.2.1. Composition calibration for lithium niobate crystals based on Raman experiments
3.3.2.2. Raman spectra of crystals grown from Rb2O and Cs2O containing fluxes
3.3.2.3. Raman spectra of crystals grown from Na2O containing flux
4. Summary
5. New results
Publications
Acknowledgements
Bibliography