• Mahmood, Aamir

Abstract

The interaction of cation distribution and magnetic properties of cadmium doped zinc ferrite nanoparticleswere studied. The samples were synthesized using the co-precipitation technique and analyzed for the structural phases, morphological, mechanical, optical, and magnetic properties using XRD, SEM, FTIR, DRS, PL, and VSM techniques. The spinel structure’s lattice parameters increased, and the size of the nano particles decreased with the additional quantity of the dopant. SEM images revealed the existence of spherical particles. FTIR spectrum analysis indicated the existence of absorption bands of metal oxide at higher and lower frequency regimes because of the stretching vibrations of both octahedral and tetrahedral sites. Diffuse reflectance spectra (DRS) were used to measure the bandgap energy of the samples, which increased as the dopant concentration increased. The samples were investigated using photoluminescence (PL) spectroscopy, with a Perkin-Elmer spectrometer, for emission wavelengths and energies. The magnetic properties were determined by employing a vibrating sample magnetometer (VSM) with an applied magnetic field at low and room temperatures (4 K and 300 K). The decrease in magnetic saturation and variation in coercivity, magnetic moments, and magneto-crystalline anisotropies with the doping ofions and magnetic interactions were explained by the Yafet-Kettle (YK) model. The significance of this study lies in the fact that the range of dopants chosen can be adopted for applications such as data storage, spintronics, and magnetic random-access memories (MRAMs).

Topics

• nanoparticle
• photoluminescence
• phase
• scanning electron microscopy
• x-ray diffraction
• zinc
• precipitation
• random
• coercivity
• spectroscopy
• Cadmium