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Date Published: 26/08/2024
Online Published: 27/08/2024
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DOI: https://doi.org/10.54607/hcmue.js.21.7.4344(2024)
Issue
Vol. 21 No. 7 (2024)
Section
Articles
How to Cite
Trương , C. H., Le , K. C., Nguyễn , H. H., Võ , C. M., & Lê , T. V. H. (2024). SYNTHESIS AND CHARACTERIZATION OF LANTHANUM-DOPED COBALT FERRITE NANOPARTICLES PREPARED VIA SIMPLE CO-PRECIPITATION. HCMUE Journal of Science, 21(7), 1167. https://doi.org/10.54607/hcmue.js.21.7.4344(2024)

SYNTHESIS AND CHARACTERIZATION OF LANTHANUM-DOPED COBALT FERRITE NANOPARTICLES PREPARED VIA SIMPLE CO-PRECIPITATION

Chí Hiền Trương 1, , Kim Chung Le 1, Hoàng Huy Nguyễn 1, Công Minh Võ 1, Thị Việt Hoa Lê 1
1 Trường Đại học Sư phạm Tp.HCM

Main Article Content

Abstract

In this study, spinel ferrite nanoparticles CoFe2-xLaxO4 (x = 0, 0.025, and 0.05) were successfully synthesized via a simple co-precipitation method using a 5% NaOH solution as a precipitating agent. The physicochemical properties of the materials, annealed at 850 °C for one hour, were characterized using powder X-ray diffraction (PXRD), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), and vibrating-sample magnetometry (VSM) at room temperature. The average crystallite size, calculated from PXRD, and the particle size, determined by TEM, of the CoFe2-xLaxO4 samples ranged from 20 to 30 nm and decreased with increasing La3+ ion doping percentage. The La-doped CoFe2O4 nanomaterials exhibited high coercivity (Hc = 902.00–1045.26 Oe) and high saturation magnetization (Ms = 83.33–65.17 emu·g-1), making them ideal for use in magnetic recording materials such as hard drives, magnetic tapes, and the production of permanent magnets.

 

Keywords

Cobalt ferrite, co-precipitation method, La-doping, magnetic characteristics, nanoparticles

Article Details

References

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