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Synthesis and Characterization of Ni₇₉Fe₁₅Mo₆ Nanoparticles Produced by Co-precipitation in the Presence of Organic Additives



Author(s)

Fabio Muchenski^1,2, Leonardo José Dalla Costa³, Paulo Cesar de Camargo³ and Ney Mattoso²

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DOI:10.17265/2161-6221/2021.7-9.001

1. Instituto Federal Catarinense, São Bento do Sul, SC 89.283-064, Brazil
2. Departamento de Física da Universidade Federal do Paraná, Curitiba, PR 81.531-990, Brazil
3. Departamento de Física da Universidade Federal de São Carlos, São Carlos, SP 13.565-905, Brazil

Stable nanoparticles of Ni79Fe15Mo6 (at.%) were produced by co-precipitation by NaBH4 in the presence of sucrose, ascorbic acid, and oleic acid. Nanoparticles are initially 3-10 nm in size and encapsulated by organic molecules. These particles clump together producing stable, spherical nanoparticles with an average diameter of 36 nm. Thermal analysis shows that from 600 °C no other mass loss process takes place. Preliminary magnetic measurements at room temperature show a typical behavior of a soft magnetic material, with a Mr of 1.41 emu/g (22% of Ms) and a Hc of 77 Oe. These results indicate that these nanoparticles produced by a simple, cheap, and ecologically friendly route, have a potential for diverse applications, but particularly for applications in the area of human and animal health.

Magnetic nanoparticles, supermalloy, co-precipitation.