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Achieving excellent bandwidth absorption by a mirror growth process of magnetic porous polyhedron structures
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Achieving excellent bandwidth absorption by a mirror growth process of magnetic porous polyhedron structures
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Journal Article
Achieving excellent bandwidth absorption by a mirror growth process of magnetic porous polyhedron structures
2016
Overview
A symmetrical Fe2O3/BaCO3 hexagonal cone structure having a height of 10 um and an edge length of -4um is reported, obtained using a common solvothermal process and a mirror growth process. Focused ion beam and high-resolution transmission electron microscopy techniques revealed that α-Fe2O3 was the single crystal feature present. Ba ions contributed to the formation of symmetrical structures exhibited in the final composites. Subsequently, porous magnetic symmetric hexagonal cone structures were used to study the observed intense electromagnetic wave interference. Electromagnetic absorption performance studies at 2-18 GHz indicated stronger attenuation electromagnetic wave ability as compared to other shapes such as spindles, spheres, cubes, and rods. The maximum absorption frequency bandwidth was at 7.2 GHz with a coating thickness d = 1.5 mm. Special structures and the absence of BaCO3 likely played a vital role in the excellent electromagnetic absorption properties described in this research.
Publisher
Tsinghua University Press
Subject
/ Atomic/Molecular Structure and Spectra
/ Chemistry and Materials Science
/ Cubes
/ Rods
/ Spindles
/ Transmission electron microscopy
/ α-Fe2O3
/ 吸收性能
/ 多孔
/ 生长过程
/ 电磁波干扰
/ 磁性
/ 锥体结构
/ 频率带宽
