FeCo/ZnO composites with enhancing microwave absorbing properties: effect of hydrothermal temperature and time
- 28 October 2014
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in RSC Advances
- Vol. 4 (101), 57529-57533
- https://doi.org/10.1039/c4ra09862e
Abstract
FeCo/ZnO composites were successfully synthesized by a simple one-step hydrothermal process. It is clearly seen that the pencil-like ZnO particles with 3–4 μm in length and 200–300 nm in width are found to grow along the surface of the hexagonal-cone FeCo particles, which form a discontinuous conductive network. Enhanced microwave absorption properties can be obtained for the FeCo/ZnO composites as compared to those of pure FeCo alloy, which is mainly attributed to the better resonance according to an isotropic antenna mechanism. Further investigation confirms that the hydrothermal temperature (T) and time (t) play a key role on the real part of the permittivity values of the FeCo/ZnO composites and indirectly affect the microwave absorbing properties. It is surprising to find out that the composite prepared at 150 °C for 12 hours, exhibited the optimal reflection loss of −31 dB with a 5.5 GHz effective frequency bandwidth.This publication has 18 references indexed in Scilit:
- Hexagonal-cone like of Fe 50 Co 50 with broad frequency microwave absorption: Effect of ultrasonic irradiation timeJournal of Alloys and Compounds, 2014
- Facile preparation, formation mechanism and microwave absorption properties of porous carbonyl iron flakesJournal of Materials Chemistry C, 2014
- Facile synthesis of α-MnO2 nanorods at low temperature and their microwave absorption propertiesMaterials Chemistry and Physics, 2014
- Effective high-energy ball milling in air of Fe65Co35 alloysJournal of Applied Physics, 2014
- Hierarchical Fe3O4@TiO2 Yolk–Shell Microspheres with Enhanced Microwave‐Absorption PropertiesChemistry – A European Journal, 2013
- Enhanced wave absorption of nanocomposites based on the synthesized complex symmetrical CuS nanostructure and poly(vinylidene fluoride)Journal of Materials Chemistry A, 2013
- Selective preparation and enhanced microwave electromagnetic characteristics of polymorphous ZnO architectures made from a facile one-step ethanediamine-assisted hydrothermal approachCrystEngComm, 2013
- Enhanced microwave absorption of Fe3O4 nanocrystals after heterogeneously growing with ZnO nanoshellRSC Advances, 2012
- Morphology-Controlled Synthesis and Novel Microwave Absorption Properties of Hollow Urchinlike α-MnO2 NanostructuresThe Journal of Physical Chemistry C, 2010
- Fe3O4/TiO2 Core/Shell Nanotubes: Synthesis and Magnetic and Electromagnetic Wave Absorption CharacteristicsThe Journal of Physical Chemistry C, 2010