About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Phase Transformations in Ceramics: Science and Applications
|
| Presentation Title |
Thermodynamic Design and Reactive Synthesis of Ferrite-Metal Composites |
| Author(s) |
Azhagu Devathai Dhanapal, Paul Richard Ohodnicki |
| On-Site Speaker (Planned) |
Azhagu Devathai Dhanapal |
| Abstract Scope |
Metallic Fe – Manganese Zinc Ferrite (MZF) composites were synthesized using a conventional solid-state reaction route, followed by a post-hydrogen reduction. Thermodynamic simulations using Thermo-Calc guided the prediction of phase formation under selected spinel stoichiometries and reduction conditions. By fine-tuning chemistry and the reduction temperature, we achieved phase-selective composite powders with significant improvement in saturation magnetization. Structural and chemical characterization using X-ray diffraction, Scanning Electron Microscopy, and Transmission Electron Microscopy confirmed the formation of Metallic Fe phases in the ferrite matrix, and magnetic characterization using Vibrating Sample Magnetometry revealed a notable increase in saturation magnetization up to ~16 % compared to the pure MZF. Unlike previously reported microwave hydrothermal synthesis that produces nanocomposite powders, this work uses a conventional synthesis technique that promotes favorable microstructure formation suitable for producing low coercivity powders for soft magnetic applications, offering a cost-effective and industrially viable pathway for next-generation ferrite-based magnetic materials. |