Abstract
The thermal decomposition of M3[Fe(cit)2]2 4H2O (M = Sr, Ba) has been studied isothermally and non-isothermally employing simultaneous (TG–DTG–DSC), XRD, IR, SEM and Mossbauer spectroscopic techniques. The anhydrous complexes decompose at 140–220°C to yield α-Fe2O3 and MC5H4O5 (metal acetone-dicarboxylate) intermediates. The latter decomposes to respective carbonate at higher temperature. α-Fe2O3 and MCO3 undergo a solid state reaction in the temperature range 400–430°C to yield Sr2Fe2O5 and BaFe2O4 respectively. Finally above 600°C, a solid state reaction between these products and respective metal oxides leads to the formation of M3Fe2O7 − X showing simultaneous presence of Fe(III) and Fe(IV) species. These perovskite ferrites can exhibit electrical conductivity and dielectric properties. SEM analysis shows these ferrites to be nanosized with average particle diameter of 50–55 nm.
Sign-in/Register to access full text options 
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.
