Synthesis and Characterization of Magnesium Zinc Ferrites As EM Source

Yahya,, Noorhana and A. Aziz,, Azizuddin and Daud, Hanita and Mohd Zaid,, Hasnah and Mohamad Nor Aripin, Ami Salwani and Maarof, Norehan (2008) Synthesis and Characterization of Magnesium Zinc Ferrites As EM Source. In: National Conference of Design and Concurrent Engineering (DECON2008), 28-29 October 2008, Universiti Teknikal Malaysia Melaka.

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Fabrication of Mg1-XZnXFe2O4 (where x=0.2, 0.3, 0.4, and 0.5) was carried out using solid state mixing via conventional technique. Oxides of magnesium, zinc and iron with purity of about 99.9% were mixed with distilled water in a milling machine for 12 hours. They were then filtered and pre-sintered at 1250 C and sintered at 1350oC for 10 hours in air. The phase and the crystal structure of the as-prepared samples were identified using X-ray diffraction analysis (XRD. Hysteresis graph was evaluated using Vibrating Sample Magnetometer (VSM) to get the saturation
magnetization (emu/g) and coercivity (G) values. Atomic Force Microstructure (AFM) was used to observe the surface
morphology. The X-ray diffraction analysis showed major peak at plane (3 1 1) of the cubic structure for all the ferrites. The largest value of density achieved was 4.69 gcm-3 for 0.5 mole fraction of zinc content. Highest saturation magnetization value (3.652 emu/g) was obtained for the 0.3 mole fraction of zinc content. A strong correlation between the saturation magnetization and zinc
content was observed. We speculate that it is due to the Heisenberg super-exchange interaction of magnetic Fe3+ and non-magnetic Zn2+ occupying the octahedral and tetrahedral sites, respectively. The sample was used to induce EM field.

Item Type: Conference or Workshop Item (Lecture)
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Q Science > QC Physics
Departments / MOR / COE: Departments > Fundamental & Applied Sciences
Depositing User: Dr Hasnah Mohd Zaid
Date Deposited: 14 Apr 2010 09:46
Last Modified: 19 Jan 2017 08:26

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