Proofs of the Coexistence of Two Magnetic Contributions in Pure and Doped CaCu3Ti4O12 Giant Dielectric Constant Ceramics

Fe3+‐ or Nb5+‐doped CaCu3Ti4O12 (CCTO) ceramics show higher values of both room‐temperature (RT) grain conductivity and dielectric constant than undoped ceramics. Microstructural and structural characterization combined with magnetic properties reveal the coexistence of two components that seem rele...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2009-10, Vol.92 (10), p.2311-2318
Main Authors: Fernández, José Francisco, Leret, Pilar, Romero, Juan José, De Frutos, José, De La Rubia, Miguel Ángel, Martín-González, María Soledad, Costa-Krämer, José Luis, Fierro, José Luis García, Quesada, Adrián, García, Miguel Ángel
Format: Article
Language:English
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Summary:Fe3+‐ or Nb5+‐doped CaCu3Ti4O12 (CCTO) ceramics show higher values of both room‐temperature (RT) grain conductivity and dielectric constant than undoped ceramics. Microstructural and structural characterization combined with magnetic properties reveal the coexistence of two components that seem relevant for the dielectric behavior of the material. The grain possesses a nanostructure characterized by layered domains with thicknesses
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2009.03224.x