title: Facile synthesis of FeCo/Fe3O4 nanocomposite with high wave-absorbing properties.
abstract: The FeCo/Fe3O4 nanocomposite was synthesized using the hydrothermal approach, in which the FeCo alloy and Fe3O4 are formed by one step. The structure of the FeCo/Fe3O4 nanocomposite was characterized by means of Scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray energy-dispersive spectrometer spectroscopy (EDX). They show that the mass ratio of FeCo/Fe3O4 strongly depends on the reaction temperature. Such various architectures follow a stepwise growth mechanism of the composites prepared in various reaction temperatures were also discussed. It indicates that this strategy is facile, effective and controllable for the synthesis of FeCo/Fe3O4 by the one-step method. Furthermore, the magnetic and wave-absorbing properties of the nanocomposites with various structures were investigated in detail. The results show that the FeCo/Fe3O4 with higher mass ratio has higher magnetic properties. Moreover, the FeCo/Fe3O4 nanocomposite shows high wave-absorbing properties (e.g., -37.9 dB), which are expected to apply in microwave absorbing materials.
authors.affiliation: Department of Mechanics, Beijing Jiaotong University, Beijing 100044, China. syyi@mail.ustc.edu.cn.
authors.forename: Yu
authors.initials: Y
authors.lastname: Gu
authors.forename: Yang
authors.initials: Y
authors.lastname: Cao
authors.forename: Huijuan
authors.initials: H
authors.lastname: Chi
authors.forename: Qing
authors.initials: Q
authors.lastname: Liang
authors.forename: Yongji
authors.initials: Y
authors.lastname: Zhang
authors.forename: Youyi
authors.initials: Y
authors.lastname: Sun
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D052203:Ferrosoferric Oxide / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D008872:Microwaves; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D013057:Spectrum Analysis
chemical_list: D003035:Cobalt; D007501:Iron; D052203:Ferrosoferric Oxide