Spectroscopic Evaluation of Fe–Ni Nanoalloys for Potential Applications in Magnetic Hyperthermia

Abstract

Due to the capacity for magnetic materials to produce localised heat under an externally imposed alternating magnetic field, magnetic hyperthermia has become a promising additional technique for cancer treatment, potentially avoiding undesired thermal exposure of surrounding healthy tissues. Because composition and synthesis circumstances can modify the structural, magnetic, and physicochemical properties of iron-nickel (Fe-Ni) alloys, they are particularly interesting. In the current investigation, an electrodeposition process was used to create a Fe–Ni-based coating on a copper substrate in order to examine its properties and assess its potential for use in future magnetic hyperthermia applications. Before electrodeposition, the copper substrates were manually polished, chemically etched, and ultrasonically cleaned to enhance coating adherence and surface quality. Under carefully regulated experimental conditions, electrodeposition was performed at a constant potential of 2 V. UV-visible spectroscopy was used to examine the optical response of the deposited material over a wavelength range of roughly 320–800 nm. The near-ultraviolet part of the spectrum showed very weak absorption, whereas the visible and near-infrared sections showed wavelength-dependent increases in absorption. Around 590 nm, a noticeable absorption characteristic of about 0.047 a.u. was seen, and at 800 nm, the maximum absorbance of around 0.054 a.u. was recorded. A complex wavelength-dependent optical response of the deposited material is shown by the broad and irregular spectral behaviour. These initial results encourage more research on electrodeposited Fe-Ni-based materials; however, before their efficacy for magnetic hyperthermia can be determined, magnetic hysteresis, alternating-magnetic-field heating, specific absorption rate, and biological studies are needed.