Tailoring the Structural, Magnetic, Mechanical, and Thermal Properties of CoFe2O4 by Varying Annealing Temperature for High-Density Storage Devices

Nano-size particles of CoFe2O4 were synthesized by chemical co-preciptation method. Developed nano-particles were annealed at temperatures 300 degrees C, 500 degrees C, and 700 degrees C for 2 h to study the effect of annealing temperature on structural, mechanical, thermal, and magnetic properties of CoFe2O4 nanoparticles. For crystalline properties synthesized particles were characterized using powder X-ray diffraction (XRD) technique which confirms the formation of single-phase spherically shaped nanoparticles with crystallite size in the range from 13 to 32 nm. The micro-strain and dislocation-density decreased with increasing annealing temperature. The Fourier transform infrared (FTIR) absorption peaks experienced a blue shift with annealing temperature. The two-step decomposition process has been identified by the variation observed in thermal behavior. The saturation magnetization increased from 35.55 emu g(-1) to 75.85 emu g(-1) as we increase the annealing temperature from 300 degrees C to 700 degrees C. High coercivity and thermally stability of annealed CoFe2O4 nanoparticles make them suitable for high-density magnetic storage applications.

Automated summary

Nano-size CoFe2O4 particles were synthesized using the chemical co-precipitation method, followed by annealing at different temperatures to study their structural, mechanical, thermal, and magnetic properties. The annealed nanoparticles showed increased saturation magnetization and high coercivity, making them suitable for high-density magnetic storage applications.