Enhanced microwave absorption of Fe flakes with magnesium ferrite cladding
Enhanced microwave absorption of Fe flakes with magnesium ferrite cladding
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DOI：
10.1016/j.jmmm.2012.07.043
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发表时间：
2012-12
影响因子：
2.7
通讯作者：
N. Tian;J. W. Wang;F. Li;Z. Mei;Z. X. Lu;L. Ge;C. You
中科院分区：
文献类型：
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作者：
N. Tian;J. W. Wang;F. Li;Z. Mei;Z. X. Lu;L. Ge;C. You
结果表明，在片状铁片表面包覆镁铁氧体（MgFe_2O_4）有助于有效降低片状铁片的介电常数。从而改善了电磁阻抗匹配，获得了较好的微波吸收效果。仔细的表征表明，介电常数的巨大下降归因于由于MgFe2O4包覆的表面的高电阻率。当MgFe_2O_4含量为10wt%时，片状Fe具有较薄的吸收体厚度和较好的高频微波吸收性能。
Surface cladding of Magnesium ferrite (MgFe2O4) was found to be helpful for effectively decreasing the permittivity of Fe flakes. So the electromagnetic impedance matching was improved, resulting in a good microwave absorption. Careful characterizations showed that the giant decreases of permittivity were ascribed to the high resistivity of surface due to the MgFe2O4cladding. A high frequency microwave absorption property with thin absorber thickness was obtained for the Fe flakes with 10wt% MgFe2O4.