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Structural and Magnetic Characterization of Copper Ferrites Prepared by Using Spray Co-Precipitation Method

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Crystal structure, cation distribution and magnetic properties of CuFe2O4 nanoparticles prepared by using spray co-precipitation method with different annealing temperature (T a = 600, 700, 800 and 900 °C) were studied systematically by synchrotron X-ray diffraction (SXRD), transmission electron microscopy (TEM) and vibrating sample magnetometry (VSM). The crystal structure symmetry of the samples was confirmed to be cubic (space group Fd3m). Mean particle size of the samples varies in the range of 10–300 nm. The lattice parameter, particle size and saturation magnetization were found to increase with increasing annealing temperature. Rietveld refinement performed on SXRD data reveals that the distribution of Cu2+ in crystallographic sites depends on annealing temperature. The variation of saturation magnetization and Curie temperature were discussed and explained based on cation distribution of Cu2+, surface and finite-size effects.
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Keywords: Cation Distribution; Copper Ferrite; Crystal Structure; Magnetic Properties; Spray Co-Precipitation

Document Type: Research Article

Affiliations: 1: International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology, Hanoi 100000, Vietnam 2: Faculty of Physics and Chemical Engineering, Le Quy Don Technical University, Hanoi 100000, Vietnam

Publication date: 01 August 2016

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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