Synthesis of Fe₃O₄ nanoparticles and their magnetic properties

2020/01/18 by Yan Wei, Wei, Yan
Energy · Engineering · Materials Science · #Applied Physics (physics.app-ph) #Characterization and Applications of Magnetic Nanoparticles #FOS: Physical sciences #Iron oxide chemistry and applications #Magnetic Properties and Synthesis of Ferrites #Materials Science (cond-mat.mtrl-sci)

paper · pdf · doi:10.48550/arxiv.2001.06583

openalex publication_date 2020/01/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Fe₃O₄ magnetic nanoparticles (MNPs) were synthesized by a co-precipitation method using sodium citrate and oleic acid as modifiers. Phase composition and microstructure analysis indicate that the sodium citrate and oleic acid have been successfully grafted onto the surface of Fe₃O₄ MNPs. The magnetic behaviors reveal that the modification can decrease the saturation magnetization of Fe₃O₄ MNPs due to the surface effect. Fe₃O₄ MNPs modified by sodiumcitrate and oleic acid show excellent dispersion capability, which should be ascribed to the great reduction of high surface energy and dipolar attraction of the nanoparticles.

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