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Structural and dielectric properties of Li2O-doped TiO2

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National Technical University of Athens   

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Structural and dielectric properties of Li2O-doped TiO2 (EN)
Dervos, CT (EN)
Mergos, JA (EN)
journalArticle (EN)
2014-03-01T01:31:59Z
2009 (EN)
The dielectric properties of the system Li-Ti-O have been exploited in the frequency range 20 Hz-1 MHz in order to obtain permittivity data of materials having high-kappa' and low loss. Doping of titanium dioxide with lithium oxide acts as a strong promoter of the anatase to rutile phase transition and it may reduce the phase transition temperature (915 degrees C) by more than 100 degrees C, possibly due to induced oxygen concentration disorders in the ternary Li-Ti-O system. For TiO2Li2O molar ratios of 98.92:1.08 and calcination temperature of 950 degrees C the resulting material exhibits high-kappa' and low-loss permittivity properties with lack of interfacial polarization effects. its dielectric response is superior compared to pure (undoped) rutile as obtained by calcination at much higher temperatures (1180 degrees C). (C) 2009 Elsevier Inc. All rights reserved. (EN)
Materials Science, Characterization & Testing (EN)
Grain boundaries (EN)
Lithium oxides (EN)
Phase diagrams (EN)
Phase diagram (EN)
Oxygen concentrations (EN)
Doping (additives) (EN)
Calcination (EN)
Lithium (EN)
Calcination temperature (EN)
Phase transition temperatures (EN)
Phase transitions (EN)
Relaxation (EN)
Oxide minerals (EN)
Ceramic capacitors (EN)
Titanium (EN)
Resulting materials (EN)
TiO (EN)
Permittivity (EN)
Frequency ranges (EN)
Ceramic materials (EN)
Titanium dioxide (EN)
Grain size and shape (EN)
Oxygen (EN)
Dielectric materials (EN)
Ceramics (EN)
Doped-TiO (EN)
Higher temperatures (EN)
Molar ratio (EN)
Li-Ti-O (EN)
Dielectric response (EN)
Titanium oxides (EN)
Interfacial polarization (EN)
Low loss (EN)
Materials Characterization (EN)
English
ELSEVIER SCIENCE INC (EN)
National Technical University of Athens
Digital Library of National Technical University of Athens | Dspace@NTUA
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
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