Magnetic and electromagnetic properties of Fe3O4/C self-assemblies

作者：Xiao Feng; Feng Chao; Jin Chuangui^*; Liu Xianguo; Pan Le; Xia Ailin

来源：Materials Letters, 2014, 122: 103-105.

DOI：10.1016/j.matlet.2014.01.016

• Fe3O4
• Carbon
• Nanocomposites
• Magnetic materials

Fe3O4/C self-assembled rod-like nanostructures with average diameter of 10 nm and length of 200 nm have been synthesized by the hydrothermal method. Fe3O4/C rod-like nanostructures were self-assembled by Fe3O4/C nanoparticles. The saturation magnetization of Fe3O4/C self-assemblies is 41.7 emu/g. Compared to Fe3O4 nanoparticles, the higher dielectric loss of Fe3O4/C self-assemblies is ascribed to the amorphous carbon layer. Due to the existence of carbon layer on Fe3O4, the real part of permeability of Fe3O4/C self-assemblies is higher than that of Fe3O4 nanoparticles at 2-16 GHz. Two overlapped peaks of imaginary part of permeability in Fe3O4/C self-assemblies are from the natural and exchange resonance.

• 出版日期2014-5-1
• 单位安徽工业大学