Enhanced microwave absorption quality of bio-silica-barium-ferrite composites: interplay of Fe3+ and Si4+

• Main Authors: Wahyu Widanarto, Wahyu Widanarto, Effendi, Mukhtar, Wahyu Tri Cahyanto, Wahyu Tri Cahyanto, Ghoshal, Sib Krishna, Candra Kurniawan, Candra Kurniawan, Erfan Handoko, Erfan Handoko, Mudrik Alaydrus, Mudrik Alaydrus
• Format: Article
• Language: English
• Published: Universitas Jenderal Soedirman 2023
• Subjects: QD Chemistry
• Online Access: http://eprints.utm.my/105913/1/SibKrishnaGhoshal2023_EnhancedMicrowaveAbsorptionQuality.pdf; http://eprints.utm.my/105913/; http://dx.doi.org/10.20884/1.jm.2023.18.2.7326

This paper reports the improved microwave (MW) absorption characteristics of some newly prepared bio-silica-barium-ferrite composites (SBFCs) of the form (x)Bio-SiO2:(80-x)Fe2O3:(20) BaO (where x = 0, 2, and 4 wt.%). These composites were prepared using the modified solid-state reaction method with simultaneous sintering at 800 and 1100 oC. SBFCs were studied to determine the impact of various bio-silica concentrations on their morphology, structure, magnetic properties, permittivity, permeability, and X-band reflection loss. Various SBFC thicknesses were simulated to determine the reflection loss curves. It has been established that the MW absorption capacity of the examined SBFCs may be altered by adjusting the bio-silica concentration and sample thickness.