Abstract
Samples of CaCu3Ti4-4хNi4хO12-δ. were obtained by solid phase synthesis method. X-ray diagrams of all preparations show trace amounts of the impurity phase of copper oxide(II), at x ≥ 0.04 the impurity CaTiO3 reflexes are shown. Admixtures of nickel-containing phases in samples in all investigated concentration interval by X-ray analysis and electronic scanning microscopy are not fixed. It is established that the polarization processes in the samples are carried out at different speeds by two mechanisms. As a result of modeling using two equivalent schemes, it was found that the homogeneity of samples with growth x decreases, in the sample CaCu3Ti4-4хNi4хO12-δ (х = 0.03) polarization proceeds three times faster than in x = 0.06. The sample CaCu3Ti3.88Ni0.12O12-δ conducts direct electric current better and polarizes faster in a variable electric field than x = 0.06. The activation energy of the samples is practically the same: 0.491 (x = 0.03) and 0.499 eV (x = 0.06). After 350 °C the homogeneity of the material deteriorates, which indicates a possible disorder of the structure or a break in the chemical bonds
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.
