Novel structural and magnetic properties of Mg doped copper nanoferrites prepared by conventional and wet methods

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• 作者：M.A. Ahmed^a ; ^{moala47@hotmail.com} ; H.H. Afify^b ; I.K. El Zawawia^b ; A.A. Azab^b
• 关键词：Cu&ndash ; Mg nanoferrite ; Sol&ndash ; gel ; Citrate ; Co-precipitation ; Magnetic ; Susceptibility ; Hysteresis
• 刊名：Journal of Magnetism and Magnetic Materials
• 出版年：2012
• 期刊代码：31_03048853
• 类别：ph
• 出版时间：July, 2012
• 卷：324
• 期：14
• 页码：2199-2204
• 文件大小：738 K

摘要

Nanoferrites of the general formula Cu_1鈭?em>xMg_xFe₂O₄ with 0鈮?em>x鈮?.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.