Physicochemical and magnetic properties of samarium ferrite synthesized by hydrothermal methods with various sintering time.

These magnetic material samarium ferrite metal oxide nanoparticles have great potential to be applied in various industrial fields, especially electronic equipment because they have chemical-physical properties superior to the same material in large sizes, such as mechanical, electrical, magnetic, and optical strength. This study describes the synthesis and characterization of samarium ferrite and KOH additions obtained by hydrothermal method using 0.04 g Sm(NO3)3, 0.04 g Fe(NO3)3, and 9 g KOH dissolved in 100 mL deionized water with a magnetic stirrer for 30 minutes. After the synthesis process, it was transferred into a stainless-steel autoclave and kept at 120 °C for 5 hours, then the next step was cooling to room temperature, then washing with 10 mL ethanol in 3 stages, then drying at 60 °C for 12 hours, then continued with the calcination process in a furnace at 500 °C with a variation of time of 1 hour and 2 hours. The samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transmitter infrared (FTIR), then the samples were vibrated using a magnetometer (VSM). The SEM results showed that samarium ferrite nanoparticles consisted of agglomerates of soft nanoparticles, and XRD testing indicated an amorphous structure. The FTIR characterization results present the difference in functional groups between the sample with 1 hour sintering time and the sample sintering 2 hours. The VSM results successfully demonstrated the magnetic properties of samarium ferrite with different components and particle morphologies. [ABSTRACT FROM AUTHOR]