DataVXJournal of Nanoparticle ResearchPaper
journal article·2025-11Open access

Magnetic properties of CoFe$$2$$O$$4$$ nanoparticles: experimental characterization and numerical analysis using the Ising model

Luis Abraham García-Hernández, Cuauhtemoc Benixoo Guzmán-Hernández, Goldie Oza

Journal of Nanoparticle Research· Volume 27· Issue 11
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Abstract

Abstract In this work, we synthesized superpara-magnetic cobalt ferrite (CoFe $$2$$ O $$4$$ ) magnetic nanoparticles using the co-precipitation method and performed a comprehensive structural and magnetic characterization. Structural characterization techniques, including X-ray diffraction, Raman spectroscopy, and HRTEM, confirmed the formation of an inverse spinel structure with a lattice parameter of $$a = 8.41$$ Å and an average crystallite size of $$D= 17.7\pm 6.5$$ nm. Raman peak fitting revealed broadened modes, consistent with phonon confinement effects. SQUID magnetometry confirmed superparamagnetic-like behavior of the nanoparticles at room temperature, characterized by low coercivity and remanence, with a blocking temperature of 210 K and saturation magnetization of $$Ms=51$$ emu/g. Complementing the experimental work, we implemented a two-dimensional Ising model through Monte Carlo simulations to analyze the magnetic response within the nanoparticle system.
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Research context

Nanomaterials

OpenAlex topics: Magnetic Properties and Synthesis of Ferrites · Magnetic properties of thin films · Iron oxide chemistry and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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