Physics – Condensed Matter – Materials Science
Scientific paper
2009-11-22
Journal of Nanoscience and Nanotechnology Vol. 11, 396-401, 2011
Physics
Condensed Matter
Materials Science
16 pages, 5 figures Accepted for publication in JNN
Scientific paper
10.1166/jnn.2011.3262
Structural, magnetic and electronic structural properties of Ni0.2Cd0.3Fe2.5-xAlxO4 ferrites nanoparticles have been studied x-ray diffraction (XRD), transmission electron microscopy (TEM), dc magnetization, and near edge x-ray absorption fine structure spectroscopy (NEXAFS) measurements. Nanoparticles of Ni0.2Cd0.3Fe2.5-xAlxO4 (x = 0.0 - 0.4) ferrite were synthesized using sol-gel method. The XRD and TEM measurements show that all samples have single phase nature with cubic structure and have nanocrystalline behavior. From the XRD and TEM analysis, it is observed that particle size increases with Al doping. DC magnetization measurements infer that magnetic moment decreases whereas blocking temperature increases with increase in Al doping. It is observed that the magnetic moment decreases with Al doping which may be due to the dilution of the sublattice by the doping of Al ions. The NEXAFS measurements performed at room temperature indicates that Fe exist in mixed valence state.
Alimuddin
Batoo Khalid Mujasam
Chae Kyu-Hyun
Gautam Sakshi
Koo B. H.
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