Abstract
Abstract Three ceramic perovskite phases, BaTi0.90Mn0.1O3 (MnBT), BaTi0.94Zr0.05Mn0.01O3 (MnBTZ-5) and BaTi0.89Zr0.10Mn0.01O3 (MnBTZ-10), were synthesized by a ceramic route at 1050 °C, and crystallize with cubic symmetry (space group Pm 3 ¯ m ). Their crystal structures have been refined by Rietveld analysis of powder X-ray diffraction data. The structure refinement converged to satisfactory values of the Rietveld parameters, Rp and Rwp, and goodness of fit. The lattice parameters, structure factors, bond lengths and bond angles have been calculated from General Structure Analysis System software ( gsas ). Particle size, morphology and the lattice fringes of the sintered powders have been characterized by scanning and transmission electron microscopy. The particle size was also determined from the XRD pattern using Scherrer’s equation. Their dielectric behavior has been investigated in the a.c. frequency range 42 Hz–5 MHz at temperatures between 25 and 240 °C. The fine grained phase MnBTZ-10 shows a frequency dependent broad dielectric constant. A dielectric maximum has been observed at 25 °C and 80 Hz frequency.
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.
