Multiple-phase carbon-coated FeSn2/Sn nanocomposites for high-frequency microwave absorption. (January 2016)

• Record Type: Journal Article
• Authors: Zhang, Xuefeng; Rao, Yi; Guo, Junjie; Qin, Gaowu
• Is Part Of: Carbon. Volume 96(2016)
• Page Start: 972
• Page End: 979
• Publication Date: 2016-01
• Subjects: Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2015.09.087
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: 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.