Abstract
Nb and Ni co-doped CaCu<inf>3</inf>Ti<inf>4</inf>O<inf>12</inf> ceramic samples (CaCu<inf>2.8</inf>Nb<inf>0.2</inf>Ti<inf>3.9</inf>Ni<inf>0.1</inf>O<inf>12</inf>) were obtained via the solid-state reaction method. We focused on the effect of sintering temperature (1020°C, 1040°C and 1060°C for 6 h) on phase compositions, microstructure, impedance and dielectric properties. X-ray diffraction (XRD) studies confirmed the constitution of a body-centered cubic perovskite structure. Scanning electron microscopy (SEM) micrographs revealed that average grain size increased with the rise of temperature. Dielectric properties ranging from 10<sup>3</sup> Hz to 10<sup>6</sup> Hz were tested at room temperature. CaCu<inf>2.8</inf>Nb<inf>0.2</inf>Ti<inf>3.9</inf>Ni<inf>0.1</inf>O<inf>12</inf> sample sintered at 1040°C attained the highest dielectric constant, whereas the sample sintered at 1060°C achieved effective frequency stability for dielectric constant along with the smallest grain resistance Rg. The sample sintered at 1060°C possesses the lowest dielectric loss and maintains a high dielectric constant; thus it has optimal comprehensive dielectric properties.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
