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Darwish, Moustafa Adel
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Publications (6/6 displayed)
- 2024Titanium-Based alloys and composites for orthopedic implants Applications: A comprehensive review
- 2023Exploring the promising frontiers of barium hexaferrite and barium titanate composites for electromagnetic shielding applicationscitations
- 2023Synthesis, characterization, and electromagnetic properties of polypyrrole–barium hexaferrite composites for EMI shielding applicationscitations
- 2022Correlation between Composition and Magnetic Properties of SrFe<sub>12</sub>O<sub>19</sub>/Co Nanocomposite Synthesized by the High Energy Ball-Milling Processcitations
- 2022Eco-Friendly NiO/Polydopamine Nanocomposite for Efficient Removal of Dyes from Wastewatercitations
- 2022Structure, Morphology and Electrical/Magnetic Properties of Ni-Mg Nano-Ferrites from a New Perspectivecitations
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article
Correlation between Composition and Magnetic Properties of SrFe<sub>12</sub>O<sub>19</sub>/Co Nanocomposite Synthesized by the High Energy Ball-Milling Process
Abstract
<jats:p>Nanocomposites (NCs) (100-<jats:italic>x</jats:italic>) SrFe<jats:sub>12</jats:sub>O<jats:sub>19</jats:sub>/<jats:italic>x</jats:italic> Co (<jats:italic>x</jats:italic> = 10, 20, and 30 wt. %) were produced using the high energy ball-milling (HEBM) process. The effects of hard/semi-hard ratio and annealing temperature (800, 900, and 1000 °C) on the exchange-spring in magnetic NCs were discussed. X-ray diffraction examination showed the coexistence of M-type hexaferrite SrFe<jats:sub>12</jats:sub>O<jats:sub>19</jats:sub> (SFO) as the hard phase and CoFe<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub> spinel ferrite (CFO) as the semi-hard phase. Using a scanning electron microscope (SEM), the morphology and elemental analysis of the NCs were analyzed. The magnetic performances were investigated via a vibrating sample magnetometer at room temperature. With increasing the CFO content and annealing temperature, the hysteresis loop became narrower and possessed semi-hard magnetic properties. The 10 wt. % Co NCs annealed at 800 °C had the highest coercivity of <jats:italic>H</jats:italic><jats:italic><jats:sub>c</jats:sub></jats:italic> = 4.2 kOe. These results are correlated with switching field distribution plots that have indicated the efficient exchange-spring between SFO and CFO phases NCs annealed at 800 °C. The studied samples can be a promising candidate in permanent magnets and magnetic recording media applications.</jats:p>