Multiple-phase carbon-coated FeSn2/Sn nanocomposites for high-frequency microwave absorption
Multiple-phase carbon-coated FeSn2/Sn nanocomposites for high-frequency microwave absorption
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用于高频微波吸收的多相碳包覆 FeSn2/Sn 纳米复合材料
DOI:
10.1016/j.carbon.2015.09.087
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发表时间:
2016
期刊:
影响因子:
10.9
通讯作者:
Qin Gaowu
中科院分区:
文献类型:
--
作者:
Zhang Xuefeng;Rao Yi;Guo Junjie;Qin Gaowu
Rapid expansion in microelectronic devices has prompted increasing research efforts in development of high-frequency electromagnetic wave absorption materials. Multiple-phase FeSn2/Sn/Graphite core–shell nanoparticles synthesized by an arc-discharge method, with controllable components and structures, present a typical cloaking feature aroused from the superior electromagnetic wave absorption. Based on transmission line theory, we prove quantitatively that more than 90% of the electromagnetic power can be attenuated at 9–18 GHz. Experimental results coupled with theory calculations by the Cole–Cole equation and the eddy-current model, further reveal that such high performances are originated from the onion-type interfacial architecture at nanoscale and the desirable impedance match resulting from multiple phase components.
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