Sustaining relation between Spintronics and Quantum Computing and a new generation of 5G and 6G devices is a measure challenge in front of researchers and scientist. Half metal ferromagnetic nanoparticles play a very energetic role in the development of nanoscale-devices and spintronics devices. In this work, we synthesized successfully Fe3O4 and Ca0.8Fe2.2O4 nanoparticles via sol–gel auto-combustion method for the study of specific morphological and magnetic properties for the application of spintronics devices. Field Emission Scanning Electron Microscope (FESEM) image shows the crystalline nature of given samples. Electron Diffraction X-ray (EDX) confirms the presence of Fe, Ca, and O atoms in the prepared sample. Fourier Transform Infra-Red (FTIR) confirms the presence of metal bond M–O in a given sample. Vibrating Sample Magnetometer (VSM) measures the magnetic field at room temperature which confirms the existence of a superparamagnetic behavior of Fe3O4 and Ca0.8Fe2.2O4 nanoparticles which plays an essential role in nanoscale devices such as spin-MRAM, DRAM, spin valve, spin filter, MTJ, and bio-sensing devices applications.