Structural, Magnetic, and Magnetothermal Properties of Co100−xNix Nanoparticles for Self-Controlled Hyperthermia

In this study, the structural and magnetic properties of a series functionalized Co100−xNix (x = 20, 30, 40, 50, 60, 80, 85) nanoparticles (NPs) were analyzed with objective attaining high specific absorption rate (SAR). The (MNPs) obtained by ball milling at 1425 rpm lie in range 03–29 nm are studied as potential candidates for fluid hyperthermia. Magnetic measurements show that all samples possess soft ferromagnetic reduction Curie temperature (TC) Ni substitution alloys milling. (SAR) loss power (SLP) from magnetothermal powder 4.4–83 W/g 19–382 W/g, respectively, showing strong dependence on properties. SAR/SLP values function applied field 425 kHz display square below 165 Oe, which is expected single domain nanoparticles, but deviate higher field. We also effective anisotropy constant Keff ball-milled 200, 300, 500 min. within framework linear response theory, average crystallite size. Additionally, toxicity prepared form percentage hemolysis was controlled oleic acid.