A. C. S. Costa, R. D. S. Costa, F. W. de O. Amarante, T. Fernandes, M. D. da Silva, A. Sombra, G. D. Saraiva
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Microwave dielectric properties of Ca (Nb2/3Li1/3)xTi1−xO3−δ (CNLTOX)
Modified CaTiO3 (CTO) ceramics were prepared by the conventional solid-state method. The samples belong to the Pbnm spatial group, showing an orthorhombic structure. The microwave dielectric properties of the Ca[(Li1/3Nb2/3)xTi1−x]O3−δ for ball-milled samples with ratio of 2.4 balls/g, which were calcinated at 900°C (during 5h) and sintered at 1000°C (during 3h) were investigated. The dielectric permittivity decreased with the decreasing of titanium amount. A decrease in the temperature coefficient in resonant frequency (τf) was observed with the increase of the X value.
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