Structural, Magnetic, Dielectric and Gas Sensing Properties of Ferrite Nanoparticles

Zinc substituted MFe₂O₄ nanoparticles (M = Co, Ni) have been prepared by a simple evaporation method and the prepared powders were annealed at different temperatures (600 °C and 900 °C). The role of Zn substitution on structural, magnetic, dielectric and gas sensing properties are also analyzed and the obtained results are discussed. The phase of the prepared nanoparticles is more influenced by annealing temperature. The effects of annealing temperature on magnetic and dielectric properties of Zn substituted Cobalt and Nickel ferrite nanoparticles are also investigated. The prepared nanoparticles were subjected to the gas sensor measurement for different aspects. Liquefied petroleum gas sensing investigations of the prepared samples demonstrate that the Zn substituted NiFe₂O₄ possesses an improved response than Zn substituted CoFe₂O₄ nanoparticles.