Enhanced dielectric properties with a significantly reduced loss tangent in (Mg<sup>2+</sup>, Al<sup>3+</sup>) co-doped CaCu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub>ceramics: DFT and experimental investigations
Jakkree Boonlakhorn, Jedsada Manyam, Sriprajak Krongsuk, Prasit Thongbai, Pornjuk Srepusharawoot
Abstract
Mg and Al atoms preferentially occupy Cu sites, creating liquid-phase sintering decomposition at grain boundary layers. This results in very high dielectric permittivity and a low loss tangent of the CaCu<sub>2.95</sub>Mg<sub>0.05</sub>Ti<sub>3.95</sub>Al<sub>0.05</sub>O<sub>12</sub>ceramic.
Topics & Concepts
SinteringDielectricDissipation factorMaterials sciencePermittivityGrain boundaryDopingAnalytical Chemistry (journal)Dielectric lossPhase boundaryDecompositionCeramicPhase (matter)CrystallographyChemistryMetallurgyMicrostructureOptoelectronicsOrganic chemistryChromatographyDielectric properties of ceramicsFerroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics Synthesis