The effect of lanthanum substitution on the coercivity field in oxide permanent magnet based on Ba1-xLaxFe12O19
(x = 0; 0.02; 0.04; and 0.08)
Synthesis and characterization of Ba1-xLaxFe12O19 based permanent magnet samples with variations in composition (x = 0; 0.02; 0.04; and 0.08) has been done. The method used is a solid state reaction. The phase formation of the sample Ba1-xLaxFe12O19 was carried out at 1200oC for 2 hours. The results of the X-ray diffraction pattern analysis show that all sample compositions have a single phase BaFe12O19. The results of magnetic properties testing using VSM showed that the best coercivity field and remanent magnetization values were obtained at the composition of x = 0.04. The effect of substitution of lanthanum into the barium atom can increase the number of magnetic domains which are indicated by the increase in the coercivity value of the material along with the increasing composition of x. It was concluded that the composition of Ba1-xLaxFe12O19 is a permanent magnet with the best product energy.
Cao, L., Wang, Z., Ye, Z., Zhang, Y., Zhao, L., & Zeng, Y. (2017). Interface exchange coupling induced enhancements in coercivity and maximal magnetic energy product of BaFe12O19/Co3O4 nanocomposites. Journal of Alloys and Compounds, 715, 199-205. https://doi.org/10.1016/j.jallcom.2017.04.284
Haryadi, H. (2017). Analisis neraca sumber daya pasir besi dan bijih nikel Indonesia. Jurnal Teknologi Mineral dan Batubara, 13(2), 153-169. https://doi.org/10.30556/jtmb.Vol13.No2.2017.171
Low, Z. H., Chen, S. K., Ismail, I., Tan, K. S., & Liew, J. Y. C. (2017). Structural transformations of mechanically induced top-down approach BaFe12O19 nanoparticles synthesized from high crystallinity bulk materials. Journal of Magnetism and Magnetic Materials, 429, 192-202. https://doi.org/10.1016/j.jmmm.2017.01.036
Mosleh, Z., Kameli, P., Ranjbar, M., & Salamati, H. (2014). Effect of annealing temperature on structural and magnetic properties of BaFe12O19 hexaferrite nanoparticles. Ceramics International, 40(5), 7279-7284. https://doi.org/10.1016/j.ceramint.2013.12.068
Obradors, X., Collomb, A., Pernet, M., Samaras, D., & Joubert, J. C. (1985). X-ray analysis of the structural and dynamic properties of BaFe12O19 hexagonal ferrite at room temperature. Journal of Solid State Chemistry, 56(2), 171-181. https://doi.org/10.1016/0022-4596(85)90054-4
Toby, B. H. (2001). EXPGUI, a graphical user interface for GSAS. Journal of applied crystallography, 34(2), 210-213. https://doi.org/10.1107/S0021889801002242
Vinnik, D. A., Chernukha, A. S., Gudkova, S. A., Zhivulin, V. E., Trofimov, E. A., Tarasova, A. Y., ... & Senin, A. V. (2018). Morphology and magnetic properties of pressed barium hexaferrite BaFe12O19 materials. Journal of Magnetism and Magnetic Materials, 459, 131-135. https://doi.org/10.1016/j.jmmm.2017.11.085
West, A. R. (2014). Solid state chemistry and its applications. John Wiley & Sons.
Zepf, V. (2013). Rare earth elements: a new approach to the nexus of supply, demand and use: exemplified along the use of neodymium in permanent magnets. Springer Science & Business Media.
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