期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 324, 期 14, 页码 2199-2204出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2012.02.025
关键词
Cu-Mg nanoferrite; Sol-gel; Citrate; Co-precipitation; Magnetic; Susceptibility; Hysteresis
Nanoferrites of the general formula Cu1-xMgxFe2O4 with 0 <= x <= 0.6 were prepared by standard ceramic and wet methods. The structure was studied by X-ray diffraction and IR spectroscopy. The density and lattice constant were calculated and reported. The particle size of the prepared nanoferrites ranged from 8.7 to 41.1 nm. It was found that the lattice parameter decreases with increasing cation substitution of Mg2+ due to the difference of ionic radius and atomic mass. The dc magnetic susceptibility was measured out using Faraday's method. The magnetic hysteresis measurement was performed using a vibrating sample magnetometer. Magnetic constants such as Curie temperature, effective magnetic moment, saturation magnetization, remanent magnetization and corecivicty were obtained and reported. The magnetic constants decrease with increasing Mg2+, except the remanent magnetization which increased. (C) 2012 Elsevier B.V. All rights reserved.
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