Influence of Mg and Ti substitutions on structural, microstructural, characteristics of Ni-Zn ferrites
Ni-Zn ferrites (NZF) are technologically important soft magnetic materials, and their performance can be tuned by selective cation substitution. In this study, Mg- and Ti-doped NZF with compositions Ni0.3Zn0.7-xMgxFe2O4 and Ni0.3Zn0.7-xMgxFe2O4 (x=0.000–0.075) were synthesized via the oxide-mixture...
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| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Language: | en |
| Published: |
EDP Sciences
2025
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| Subjects: | |
| Online Access: | https://umpir.ump.edu.my/id/eprint/46787/1/Paper%20E3S_Influence_of_Mg_and_Ti_substitutions_on_structural.pdf https://umpir.ump.edu.my/id/eprint/46787/ https://doi.org/10.1051/e3sconf/202568103005 |
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| Summary: | Ni-Zn ferrites (NZF) are technologically important soft magnetic materials, and their performance can be tuned by selective cation substitution. In this study, Mg- and Ti-doped NZF with compositions Ni0.3Zn0.7-xMgxFe2O4 and Ni0.3Zn0.7-xMgxFe2O4 (x=0.000–0.075) were synthesized via the oxide-mixture route to investigate the influence of dopants on structural, microstructural, and magnetic properties. XRD analysis confirmed the formation of a single-phase cubic spinel structure for all samples. Lattice parameter analysis revealed moderate contraction with Mg doping and more pronounced distortion with Ti-doping, indicating distinct cation effects on the crystal structure. SEM observations showed that Mg doping promoted densification and grain growth, resulting in a well defined microstructure with reduced porosity. In contrast, Ti-doping suppressed grain growth and produced finer grains with higher porosity. Magnetic measurement revealed contrasting behaviours where Mg doping enhanced Ms from 77.50 emu/g in undoped NZF to 84.58 emu/g at x=0.075, attributed to improved domain wall mobility and superexchange interactions. Conversely, Ti doping reduces Ms to 65.84 emu/g at x=0.075 due to lattice distortion, valence change imbalance, and grain boundary pinning. These findings reveal that Mg acts as a magnetic enhancer and sintering aid, whereas Ti disrupts the magnetic ordering, proving new approaches for tailoring NZF performance for advanced applications. |
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