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首页> 外文期刊>Nanotechnology >Controllable synthesis of Fe3O4-based magneto-dielectric ternary nanocomposites and their enhanced microwave absorption properties
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Controllable synthesis of Fe3O4-based magneto-dielectric ternary nanocomposites and their enhanced microwave absorption properties

机译：Fe3O4基磁介质三元纳米复合材料的可控合成及其增强的微波吸收性能

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摘要

In order to overcome the drawbacks of Fe(3)O(4)composite samples and greatly increase their performance in microwave absorption, magnetic Fe(3)O(4)spindles coated with dielectric SnO(2)nanorods and MnO(2)nanoflakes have been successfully synthesized by a four-step simple hydrothermal route. This rationally designed magneto-dielectric ternary nanocomposite will introduce multiple reflection and conductive losses caused by its special multilayer structure and the effective complementarity of dielectric loss and magnetic loss. Therefore, its absorbing performance can be greatly improved. It is notable that the as-prepared Fe3O4@SnO2@MnO(2)nanocomposites show a minimum reflection loss value of -50.40 dB at 17.92 GHz at a thickness of 3.9 mm and the absorption bandwidth ranges from 3.62 to 12.08 GHz. The as-prepared Fe3O4@SnO2@MnO(2)ternary nanocomposite is expected to be a potential candidate for high-performance microwave-absorbing materials with intensive electromagnetic wave absorption and wide effective absorbing bandwidth.
机译：为了克服Fe（3）O（4）复合材料样品的缺点，并大大提高其微波吸收性能，通过四步简单的水热法成功地合成了包覆介电SnO（2）纳米棒和MnO（2）纳米片的磁性Fe（3）O（4）锭子。这种合理设计的磁-介电三元纳米复合材料由于其特殊的多层结构以及介电损耗和磁损耗的有效互补性，将引入多重反射和传导损耗。因此，它的吸收性能可以大大提高。值得注意的是，该报告已准备就绪Fe3O4@SnO2@MnO（2）纳米复合材料在厚度为3.9mm、17.92GHz时的最小反射损耗值为-50.40dB，吸收带宽为3.62至12.08GHz。准备好了吗Fe3O4@SnO2@MnO（2）三元纳米复合材料有望成为高性能吸波材料的潜在候选材料，具有强烈的电磁波吸收和较宽的有效吸收带宽。

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