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Preparation and characterization of Sr1−xNdxFe12O19 derived from steel-waste product via mechanical alloying


Citation

Daud, Noruzaman and Azis, Rabaah Syahidah and Hashim, Mansor and Matori, Khamirul Amin and Hassan, Jumiah and Mohd. Saiden, Norlaily and Mohd Shahrani, Nuraine Mariana (2015) Preparation and characterization of Sr1−xNdxFe12O19 derived from steel-waste product via mechanical alloying. Materials Science Forum, 846. pp. 403-409. ISSN 0255-5476; ESSN: 1662-9752

Abstract

Steel waste product had been used as the main source of raw material in the preparation of permanent magnets ferrites. Steel waste product is an impure material that contains the iron oxide and impurities. The steel waste product is a form of flakes is grinding for several hours to form a fine powder. The iron oxide powder is separated from magnetic and non-magnetic particle using magnetic particle separation. The magnetic particle was again been purified by using the Curie temperature separation technique. The magnetic powder was carried out from the purification and oxidize at 500 °C for 6 hours at 2 °C/ mins to form the hematite, Fe2O3, used as a raw powder to prepare SrFe12O19. Microstructure of Nd-doped strontium ferrites, Sr1-xNdxFe12O19, with x = 0.0, 0.1, 0.2, 0.3, 0.4 and 0.5, were prepared through a mechanical alloying technique. Several characterizations have been done, such as X-ray Diffraction (XRD) and Field emission scanning electron microscopy (FESEM). The magnetic properties of coercivity (Hc) and the energy product BHmax of samples are carried out. The magnetic properties of samples were investigated with an expectation of enhancing the magnetic properties by substitutions of Nd3+ ions on Fe3+ ion basis sites. The saturation magnetization Ms revealed magnetic behavior with respect to Nd3+ doping concentration, showing a decrease. The coercivity Hc increased with increasing Nd3+ doping concentration.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
DOI Number: https://doi.org/10.4028/www.scientific.net/MSF.846.403
Publisher: Trans Tech Publications
Keywords: FESEM; Hysteresis; Sr1−xNdxFe12O19; Steel-Waste
Depositing User: Ms. Nida Hidayati Ghazali
Date Deposited: 15 May 2018 01:38
Last Modified: 15 May 2018 01:38
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.4028/www.scientific.net/MSF.846.403
URI: http://psasir.upm.edu.my/id/eprint/45961
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