Abstract
CaCu3Ti4O12 ceramics were prepared using a green solution-egg white method. A main phase of CaCu3Ti4O12 is observed in the obtained powder and all sintered ceramics. The microstructure of all ceramics is studied. Their grain sizes are found to be in the range of 4–7 µm. Giant dielectric properties with low dielectric loss (tanδ ∼ 0.07) and large dielectric permittivity (e′ ∼ 7000) are achieved in the sintered CaCu3Ti4O12 ceramic. An impedance spectroscopy analysis confirms a heterogeneous microstructure in sintered CaCu3Ti4O12 ceramics, consisting of highly resistive grain boundaries and semiconducting grains. Mixed Cu3+/Cu2+/Cu+ and Ti4+/Ti3+ phases are detected using X-ray photoelectron spectroscopy, confirming the presence of semiconducting grains.
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.
