期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 385, 期 -, 页码 302-307出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2015.03.036
关键词
Co-precipitation; Nanoparticles; FT-IR; Coercivity; Vibrating Sample Magnetometer; Sintering
Copper doped nickel ferrites Ni(1-x)CuxFe2O4 (where x=0.2, 0.4, 0.6) nanoparticles are prepared by coprecipitation method and sintered at 600 degrees C. The XRD study confirms the formation of single-phase cubic spinet Ni-Cu ferrites. The particle size increases with Cu substitution. FT-IR spectra confirm the absorption bands around 554-547 cm(-1) for the tetrahedral sites and around 448-450 cm(-1) for the octahedral sites. The inclusion of copper shifts the tetrahedral band to lower values. The saturation magnetization (M-s) and remanent magnetization (M-r) decrease with increase in copper concentration and the coercivity (H-c) is found to increase for all the compositions sintered at 600 degrees C. The dielectric constant decreases drastically for all the compositions and reaches a constant value. These nanoparticles can be tested for humidity sensing applications. (C) 2015 Elsevier B.V. All rights reserved
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据