Temperature influence on NiFeMo nanoparticles magnetic properties and their viability in biomedical applications.

Muchenski, Fabio; Gonçalves, Jenifer Pendiuk; Ribeiro, Yasmin Carla; Franco, Célia Regina Cavichiolo; de Oliveira, Carolina Camargo; Marcon, Bruna Hilzendeger; Robert, Anny; de Medeiros, Lia Carolina Soares et al. · J Biomed Mater Res B Appl Biomater · 2023

basic_science · Level V

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Abstract

NiFeMo alloy nanoparticles were synthesized by co-precipitation in the presence of organic additives. Nanoparticles thermal evolution shows that there is a significant increase in the average size (from 28 to 60 nm), consolidating a crystalline structure of the same type as the Ni<sub>3</sub> Fe phase but with lattice parameter a = 0.362 nm. Measurements of magnetic properties follow this morphological and structural evolution increasing saturation magnetization (Ms) by 578% and reducing remanence magnetization (Mr) by 29%. Cell viability assays on as-synthesized revealed that nanoparticles (NPs) are not cytotoxic up to a concentration of 0.4 μg/mL for both non-tumorigenic (fibroblasts and macrophages) and tumor cells (melanoma).

Medical subject headings