Magnetic materials are essential components of modern technology with applications ranging from recording media to medical imaging. Particles with dimensions smaller than 100 nm exhibit physical and chemical properties that are neither the counterparts of the atom nor the mass [1]. When we go from mass to quantum nanosize, the effects and large surface area of ​​magnetic nanoparticles dominate and show some changes in magnetic properties and show the super paramagnetic phenomena. Super paramagnetic nanoparticles show high potential for some applications in different fields such as MRI, ferrofluids, targeted drug delivery, magnetic hyperthermia, magnetofection, magnetic separation: cell, DNA, protein separation, fisheries 'RNA. [2-5]. Due to technological applications, especially in biomedical science, the study of iron oxide nanoparticles has increased rapidly. [6–8].The size range of magnetic nanoparticles varies from a few nanometers up to tens of nanometers, which are smaller than those of a cell (10-100μm), a virus (20-450nm), a protein (5-50nm) or a gene (2 nm wide and 10-100 nm long). This means that magnetic nanoparticles can be used for biomedical applications. Magnetic nanoparticles have a large surface area that can be modified to attach biological agents, i.e., a bioactive molecule or legend for targeting. So magnetic nanoparticles can be used to deliver a package, such as an anticancer drug, or a cohort of radionuclide atoms, to a targeted region of the body, such as a tumor. The important magnetic property of these nanoscale nanoparticles is superparamagnetism. which shows a much higher magnetic sensitivity than traditional paramagnets. When the size of the......half of the paper......So, it can be said that it is the excitonic emission of γ-Fe2O3 nanoparticles.3.4 VSM analysisFig. 4 shows the magnetic hysteresis curve of γ-Fe2O3 nanoparticles observed at room temperature. The magnetization curves of the nanoparticles were measured at 10,000 gauss. The development of the saturated circuit confirms the magnetic nature of the sample. The small value of hysteresis and remanent magnetization that can be neglected indicates that these particles are superparamagnetism in nature. The typical feature of superparamagnetic behavior in the magnetization curve showed very small coercivity (~131.66 gauss) and remanence (~1.46 emu/g). For fine γ-Fe2O3 particles a saturation magnetization of ~13.4 emu/g was determined.