Abstract
Several ferrum oxides of formula Ba4Gd2Fe2Nb8−xTaxO30 (x = 2, 4, 6 and 8) with tetragonal tungsten-bronze structure have been synthesized by the conventional solid state sintering method. Dielectric response of the samples was studied using AC impedance spectroscopy and universal dielectric relaxation law in detail. The dielectric anomaly at high temperature is attributed to the mobility of oxygen vacancies. Arrhenius activation energy associated with the migration of oxygen vacancies is estimated from impedance spectroscopy, which is 0.77, 1.11, 1.26 and 1.02 eV for x = 2, 4, 6 and 8, respectively.
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 callMore From: Journal of Materials Science: Materials in Electronics
Disclaimer: 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.
