Structural and magnetic properties ofNanocrystalline Nickel ferriteprepared byCitrate Sol–geland Solid- state reaction techniques

Hamdy, R. M.; Osman, M. B.; Abbas, Y. M.; Ahmed, M. A.

doi:10.21608/jsrs.2018.26731

Structural and magnetic properties ofNanocrystalline Nickel ferriteprepared byCitrate Sol–geland Solid- state reaction techniques

Document Type : Original Article

Authors

¹ Physics Department, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo, Egypt

² Physics Department, Faculty of Science, Suez Canal University, Ismailia, Egypt

³ Physics Department, Faculty of Science, Cairo University, Giza, Egypt

10.21608/jsrs.2018.26731

Abstract

The structure and magnetic properties ofnanocrystalline nickel ferrite powder NiFe₂O₄has been investigated using two different preparation methods, including the ceramic technique and citrate method. The synthesized powders were characterized using X-ray Diffraction (XRD) for crystallite size, X-ray density and lattice parameter calculation. The results indicated that the citrate method gives the lowest value for the lattice parameter and crystallite size (60.6 nm) in citrate method and (73.8 nm) in ceramic method. Distribution of cations among the two interstitial sites (tetrahedral and octahedral sites) has been estimated by analyzing the powder X-ray diffraction patterns by employing Rietveld refinement technique, and the results reveal the existence of samples asinverse spinelwith cubic structure and Fd-3m space group.The morphological investigations using Field Emission Scanning Electron micrograph (FE-SEM) and High Resolution Transmission Electron Microscopy (HR-TEM).The elemental analysis of samples usingEnergy Dispersive X-ray Analysis (EDAX) .Magnetic measurements of the samples at room temperature were carried out by means of vibrating sample magnetometer (VSM).