MICROSTRUCTURE AND DIELECTRIC PROPERTIES OF PARALLEL EVOLUTION ON Ni0.3Zn0.7Fe2O4 NANOPARTICLES

Abstract

Nickel substituted zinc ferrite nanoparticles of the composition Ni_0.3Zn_0.7Fe₂O₄ have been synthesized by the solid state method. The samples were characterised by X-ray diffraction, Field Emission Scanning electron microscopy (FESEM), and dielectric studies. The X-ray diffraction patterns confirm the synthesis of single crystalline phase of Ni_0.3Zn_0.7Fe₂O₄ nanoparticles. An improvement in the crystal structure is observed when samples were annealed at 1173 K to 1573 K. FESEM reveals that the sample has well dispersed nanoparticles. The dielectric constant decreases with increased frequency, the dispersion at low frequency range are follows the Maxwell-Wegner interfacial polarization.