Permittivity and permeability of Zn(Fe)/ZnO nanocapsules and their microwave absorption in the 2-18 GHz range

Permittivity and permeability of Zn(Fe)/ZnO nanocapsules and their microwave absorption in the 2-18 GHz range
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Zn(Fe)/ZnO 纳米胶囊的介电常数和磁导率及其在 2-18 GHz 范围内的微波吸收

DOI:
10.1063/1.4868599
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发表时间:
2014-03
影响因子:
3.2
通讯作者:
Zhang, Z. D.
Zhang, Z. D.
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
An, J.;He, J.;Liu, W.;Zhang, Z. D.

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研究了具有核壳结构的 Zn 或 Zn(Fe) 纳米粒子在 2 至 18 GHz 频率范围内的介电常数和磁导率。该颗粒含有 ZnO 形式的氧化物壳,而核材料为 Zn 或 Zn(Fe)。介电常数的共振频率对应于 Zn/ZnO 纳米胶囊中的最大微波吸收,该频率不随吸收剂厚度的变化而变化。然而,当在 Zn/ZnO 纳米胶囊中掺杂 Fe(约 40%)时,随着吸收剂厚度的增加,最大微波吸收的位置转移到较低频率。
The permittivity and permeability of Zn or Zn(Fe) nanoparticles with core-shell structure were investigated for frequencies from 2 to 18 GHz. The particles contain oxides shell in the form of ZnO, while the core material is Zn or Zn(Fe). The resonance frequency in permittivity corresponds to the maximum microwave absorption in the Zn/ZnO nanocapsules, which is not shifted with changing the thickness of the absorbent. However, with doping Fe (about 40%) in Zn/ZnO nanocapsules, the position for the maximum microwave absorption is shifted to lower frequencies with increasing the thickness of the absorbent.
DOI: 10.1088/0022-3727/40/17/056
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