Achieving excellent bandwidth absorption by a mirror growth process of magnetic porous polyhedron structures

Hualiang Lv, Haiqian Zhang, Jun Zhao, Guangbin Ji*, Youwei Du

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

227 Citations (Scopus)

Abstract

A symmetrical Fe2O3/BaCO3 hexagonal cone structure having a height of 10 μm and an edge length of ~4 μm 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.

Original languageEnglish
Pages (from-to)1813-1822
Number of pages10
JournalNano Research
Volume9
Issue number6
DOIs
Publication statusPublished - Jun 2016

Scopus Subject Areas

  • Materials Science(all)
  • Electrical and Electronic Engineering

User-Defined Keywords

  • effective frequency bandwidth
  • Fe2O3/BaCO3
  • porous magnetic absorber
  • single crystal
  • symmetrical hexagonal cone structure

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