Enhancing the magnetic properties of CoFe2O4 ceramics through neodymium doping
This study investigates the structural and magnetic modifications in CoNdxFe₂₋ₓO₄ (x = 0.00–0.10) nano ferrites induced by neodymium doping. XRD analysis confirmed the formation of a single-phase cubic spinel structure across all compositions, with a near-constant lattice parameter and a noticeable...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-07-01
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| Series: | Next Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S294982282500320X |
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| Summary: | This study investigates the structural and magnetic modifications in CoNdxFe₂₋ₓO₄ (x = 0.00–0.10) nano ferrites induced by neodymium doping. XRD analysis confirmed the formation of a single-phase cubic spinel structure across all compositions, with a near-constant lattice parameter and a noticeable decrease in crystallite size from 19.08 nm to 12.80 nm as x increased. Dislocation density and microstrain increased with doping, suggesting enhanced lattice strain due to the larger ionic radius of Nd³ ⁺. EDS analysis confirmed successful Nd incorporation and revealed fluctuating oxygen stoichiometry. Raman spectra showed peak shifts and broadening, signifying increased cation disorder with Nd substitution. Magnetic characterization at 3 K revealed a maximum saturation magnetization of 71.52 emu/g (x = 0.02) and a peak coercivity of 18,154 Oe (x = 0.10), highlighting strengthened anisotropy. At 300 K, saturation magnetization decreased with doping, while coercivity showed a slight increase and then decreased beyond x = 0.04. These key findings suggest that Nd doping effectively modulates the microstructure and magnetic properties of cobalt ferrites, offering tunability for low-temperature magnetic and spintronic applications. |
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| ISSN: | 2949-8228 |