Magnetic properties of Co3O4 nanoparticles fabricated by chemical synthesis

Spinel-type cobalt oxide (Co₃O₄) is a technologically important material due to its diversified applications in many technologies, such as catalytic materials, gas sensors, ceramic materials, and magnetic materials. The bulk Co₃O₄ possess spinel structure with antiferromagnetic exchange between ions occupying tetrahedral A sites and octahedral B sites. Synthesis of Co₃O₄ nanoparticles has always been a challenge. In this work, a systematic study has been carried out to synthesize and characterize nanoparticles of cobalt spinel.