Structural and dielectric properties of Li2O-doped TiO2

Mergos, JA; Dervos, CT

dc.contributor.author	Mergos, JA	en
dc.contributor.author	Dervos, CT	en
dc.date.accessioned	2014-03-01T01:31:59Z
dc.date.available	2014-03-01T01:31:59Z
dc.date.issued	2009	en
dc.identifier.issn	1044-5803	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20006
dc.subject	Ceramics	en
dc.subject	Grain boundaries	en
dc.subject	Permittivity	en
dc.subject	Phase diagram	en
dc.subject	Relaxation	en
dc.subject.classification	Materials Science, Characterization & Testing	en
dc.subject.other	Calcination temperature	en
dc.subject.other	Ceramics	en
dc.subject.other	Dielectric response	en
dc.subject.other	Doped-TiO	en
dc.subject.other	Frequency ranges	en
dc.subject.other	Higher temperatures	en
dc.subject.other	Interfacial polarization	en
dc.subject.other	Li-Ti-O	en
dc.subject.other	Lithium oxides	en
dc.subject.other	Low loss	en
dc.subject.other	Molar ratio	en
dc.subject.other	Oxygen concentrations	en
dc.subject.other	Phase transition temperatures	en
dc.subject.other	Relaxation	en
dc.subject.other	Resulting materials	en
dc.subject.other	TiO	en
dc.subject.other	Calcination	en
dc.subject.other	Ceramic capacitors	en
dc.subject.other	Ceramic materials	en
dc.subject.other	Dielectric materials	en
dc.subject.other	Doping (additives)	en
dc.subject.other	Grain boundaries	en
dc.subject.other	Grain size and shape	en
dc.subject.other	Lithium	en
dc.subject.other	Oxide minerals	en
dc.subject.other	Oxygen	en
dc.subject.other	Phase diagrams	en
dc.subject.other	Phase transitions	en
dc.subject.other	Titanium	en
dc.subject.other	Titanium dioxide	en
dc.subject.other	Titanium oxides	en
dc.subject.other	Permittivity	en
dc.title	Structural and dielectric properties of Li2O-doped TiO2	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.matchar.2009.01.019	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.matchar.2009.01.019	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	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
heal.publisher	ELSEVIER SCIENCE INC	en
heal.journalName	Materials Characterization	en
dc.identifier.doi	10.1016/j.matchar.2009.01.019	en
dc.identifier.isi	ISI:000267725000014	en
dc.identifier.volume	60	en
dc.identifier.issue	8	en
dc.identifier.spage	848	en
dc.identifier.epage	857	en