Study of Morphological, Optical and Microwave Properties of Strontium-Doped Cobalt Ferrites

This work presents the effect of structural variation of strontium cobalt iron oxide on the electromagnetic properties for potential use of a perovskite structure in microwave applications. Various grades of strontium cobalt iron oxides were synthesized with varying concentration of Sr 2+ and Co 2+...

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Bibliographic Details
Published in:Journal of electronic materials 2020-08, Vol.49 (8), p.4801-4808
Main Authors: Mir, Amna, Qadeer, Mohammad, Waqas, Rana, Khan, Salman Naeem
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cobalt ferrites
Electromagnetic properties
Electronics and Microelectronics
Frequency ranges
Instrumentation
Iron oxides
Materials Science
Network analysers
Optical and Electronic Materials
Optical properties
Perovskite structure
Perovskites
Sol-gel processes
Solid State Physics
Spinel
Strontium oxides
Substrates
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Summary:This work presents the effect of structural variation of strontium cobalt iron oxide on the electromagnetic properties for potential use of a perovskite structure in microwave applications. Various grades of strontium cobalt iron oxides were synthesized with varying concentration of Sr 2+ and Co 2+ using a sol–gel auto combustion route. X-ray diffraction confirmed the structural variation from cubic spinel (Fd-3m) to cubic primitive (Pm-3m) and finally to a perovskite structure. Electromagnetic properties were investigated using a vector network analyzer over a broad frequency range of 1–18 GHz. It was found that structural transition from spinel to perovskite resulted in a considerable increase in permittivity, together with significant decrease in permeability. Electromagnetic response and reflection loss indicates that the proposed composition is a suitable substrate material for miniaturized antenna applications.
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-020-08212-9