Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
TAILORING THE GRAIN BOUNDARY ELECTRICAL RESPONSE IN SIO2-DOPED CCTO CERAMICS
Year:2013
Research Areas
  • Physics chemical and mathematical,
  • Engineering
Information
Abstract
ABSTRACT Recently, CaCu3Ti4O12 (CCTO) ceramics with perovskite-like structure have attracted much attention due to their giant dielectric constant value (~105) which is almost constant in a broad frequency and temperature range. In this work, CCTO has been synthesized at 900 ºC by solid state reaction and following it has been SiO2 coated by sol-gel method at 0.5, 1, 2.5 and 5% wt. These materials have been thermally treated at 975 ºC, 1030 ºC and 1100 ºC. The obtained ceramics have been characterized in order to correlate the structural, microstructural and electrical properties. In summary, we have found that both the thermal treatments and the SiO2 content, modify the CCTO structure and microstructure due to the stabilization of different phases. This fact evidences that the grain boundary plays an important role over the electrical properties control.
International
Si
Congress
13 SAM-CONAMET 13 INTERNATIONAL CONGRESS OF SCIENCIA AND TECHNOL. M. MAT.
960
Place
IGUAZU-ARGENTINA
Reviewers
Si
ISBN/ISSN
0000-0000
Start Date
20/08/2013
End Date
23/08/2013
From page
918
To page
918
SAM-CONAMET 2013
Participants
  • Autor: PILAR LERET (ICV-CSIC)
  • Autor: Miguel Ángel De La Rubia López (UPM)
  • Autor: Jose de Frutos Vaquerizo (UPM)
  • Autor: Jose Francisco Fernández Lozano (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Propiedades ópticas, eléctricas y magnéticas de materiales y sus aplicaciones (POEMMA)
  • Centro o Instituto I+D+i: Centro de Materiales y Dispositivos Avanzados para Tecnologías de Información y Comunicaciones
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