RGO/BaFe12O19/Fe3O4 nanocomposite as microwave absorbent with lamellar structures and improved polarization interfaces
RGO/BaFe12O19/Fe3O4 nanocomposite as microwave absorbent with lamellar structures and improved polarization interfaces
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RGO/BaFe12O19/Fe3O4 纳米复合材料作为微波吸收剂，具有层状结构和改进的极化界面
DOI：
10.1016/j.materresbull.2018.08.014
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发表时间：
2018-12-01
影响因子：
5.4
通讯作者：
Li, Guang
中科院分区：
文献类型：
--
作者：
Jiao, Shangqing;Wu, Mingzai;Li, Guang
在本文中，我们采用两步溶剂热法设计并制备了BaFe12O19（BFO）薄片、二维石墨烯和Fe3O4纳米颗粒的复合材料。 BFO薄片与二维石墨烯的结合可以有效增强异质界面，并被认为有利于增强界面极化。引入反脊柱）Fe3O4作为第三相可以增加饱和磁化强度。对所制备样品的相结构、形貌、磁性能和电磁波吸收性能进行了表征。由于BaFe12O19薄片和石墨烯之间增强的界面极化，RGO/BaFe12O19/Fe3O4复合材料表现出优异的微波吸收性能。厚度为1.8 mm时，在15.6 GHz时最大反射损耗可达-46.04 dB，有效吸收带宽达到5.68 GHz（从11.60 GHz到17.28 GHz）。 RGO/BaFe12O19/Fe3O4复合材料由于其优异的吸收性能，在微波吸收领域具有潜在的应用前景。
In this paper, we designed and prepared a composite of BaFe12O19 (BFO) flakes, two-dimensional graphene and Fe3O4 nanoparticles using a two-step solvothermal method. The combination of BFO flakes and two-dimensional graphene could effectively enhance the heterointerface and is believed to be favorable to enhance the interface polarization. The introduction of inverse spine) Fe3O4, as the third phase could increase the saturated magnetization. The phase structure, morphology, magnetic properties and electromagnetic wave absorption performance of the as-prepared samples were characterized. Due to the enhanced interfacial polarization between the BaFe12O19 flakes and graphene, the composite of RGO/BaFe12O19/Fe3O4 exhibits excellent microwave absorption properties. The maximum reflection loss can reach -46.04 dB at 15.6 GHz with a thickness of 1.8 mm, and the effective absorption bandwidth reaches 5.68 GHz (from 11.60 GHz to 17.28 GHz). It is believed that the RGO/BaFe12O19/Fe3O4 composites can find potential application in the field of microwave absorption due to their excellent absorption properties.