Speaker
Description
Nanoparticles of magnesium ferrite (MgFe₂O₄) and rare earth (RE)(La, Sm)-doped magnesium ferrite (Mg(RE)₀.₂Fe₁.₈O₄) were synthesized via the hydrothermal method and annealed at 500°C, 700°C, and 900°C. X-ray diffractometry (XRD), Ultraviolet-Visible Spectroscopy (UV-Vis), High-Resolution Transmission Electron Microscopy (HRTEM), and Photoluminescence (PL) spectroscopy were utilised for structural and optical characterization. XRD confirmed the formation of a cubic spinel structure, with Bragg peak intensity increasing at 900°C across all samples. Crystallite size decreased with increasing molecular weight, indicating enhanced structural refinement. HRTEM further confirmed improved crystallinity at 900°C. UV-Vis analysis revealed a notable reduction in bandgap upon La and Sm doping, suggesting enhanced electronic properties. PL spectra indicated dual-wavelength photon emission (495 nm and 503 nm) for pure MgFe₂O₄, while doping significantly suppressed PL intensity, leading to single-wavelength emission at 500 nm (2.48 eV).
| Apply for student award at which level: | MSc |
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| Consent on use of personal information: Abstract Submission | Yes, I ACCEPT |
