Abstract
A straightforward solvothermal methodology was employed to synthesize [Formula: see text] microspheres and [Formula: see text]@C hybrids, where amorphous carbon encapsulated [Formula: see text] microspheres. This encapsulation was achieved by meticulously controlling the reaction duration and glucose concentrations within the hydrothermal process. Analysis via X-ray diffraction and Raman spectroscopy confirmed that all specimens retained a homogeneous [Formula: see text] phase. Following encapsulation, the [Formula: see text] particles were uniformly distributed across the amorphous carbon spheres, with fine particle sizes in the hybrids measuring less than 20 nm. Magnetic characterization revealed that parameters such as saturation magnetization, remanent magnetization, and coercivity of the [Formula: see text] microspheres could be significantly adjusted by varying the hydrothermal reaction time. Notably, the hybrids exhibited a 5- to 10-fold increase in both coercivity and remanent magnetization when compared to the pristine [Formula: see text] microspheres. Nonetheless, the saturation magnetization of the hybrids reached up to 90% of that observed in bulk [Formula: see text]. These magnetic properties are predominantly influenced by the size effect associated with the nanostructured [Formula: see text].
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call