The effect of CaCO3-doping on the structural and dielectric properties of TiO2

Athanassopoulou, MD; Mergos, JA; Dervos, CT

dc.contributor.author	Athanassopoulou, MD	en
dc.contributor.author	Mergos, JA	en
dc.contributor.author	Dervos, CT	en
dc.date.accessioned	2014-03-01T02:47:06Z
dc.date.available	2014-03-01T02:47:06Z
dc.date.issued	2010	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/32999
dc.subject	Calcium carbonate	en
dc.subject	Permittivity	en
dc.subject	Phase transformation	en
dc.subject	Relaxation	en
dc.subject	Transition promoter	en
dc.subject.other	Complex oxides	en
dc.subject.other	Frequency ranges	en
dc.subject.other	Low loss	en
dc.subject.other	Phase transformation	en
dc.subject.other	Relaxation	en
dc.subject.other	TiO	en
dc.subject.other	Transition promoter	en
dc.subject.other	Transition rates	en
dc.subject.other	X-ray diffraction techniques	en
dc.subject.other	Calcination	en
dc.subject.other	Calcium carbonate	en
dc.subject.other	Dielectric materials	en
dc.subject.other	Doping (additives)	en
dc.subject.other	Oxide minerals	en
dc.subject.other	Permittivity	en
dc.subject.other	Titanium dioxide	en
dc.subject.other	X ray diffraction	en
dc.subject.other	Phase transitions	en
dc.title	The effect of CaCO3-doping on the structural and dielectric properties of TiO2	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/ICSD.2010.5568062	en
heal.identifier.secondary	http://dx.doi.org/10.1109/ICSD.2010.5568062	en
heal.identifier.secondary	5568062	en
heal.publicationDate	2010	en
heal.abstract	The utilization of CaCO3 as a dopant to TiO2 is studied and its effects are compared to those of Al2O3 and Li2CO3. The dielectric properties of the system have been exploited in the frequency range 1 MHz-1 GHz in order to obtain permittivity data of materials having high-κ′ and low loss. The X-Ray Diffraction technique was employed for the evaluation of the anatase-to-rutile (A-R) phase transition in TiO2 nanoparticles during calcination. It is found that CaCO3 doping in TiO2 increases the anatase-to-rutile transition rate once the phase transformation has been initiated. This behaviour is similar to that of Al2O3 and different to the one of Li2CO3, where phase transformation occurs at significantly lower temperatures. The formation of the complex oxide CaTiO3 is also recorded. ©2010 IEEE.	en
heal.journalName	Proceedings of the 2010 IEEE International Conference on Solid Dielectrics, ICSD 2010	en
dc.identifier.doi	10.1109/ICSD.2010.5568062	en