Bio-template synthesis of hollow Fe3O4 fibers and their enhanced microwave absorption performance in Ku-band. Issue 172 (12th June 2016)

• Record Type: Journal Article
• Authors: Liu, Qiangchun; Huang, Fei; Zi, Zhenfa; Zhang, Min; Dai, Jianming
• Is Part Of: Integrated ferroelectrics. Issue 172(2016)
• Page Start: 66
• Page End: 73
• Publication Date: 2016-06-12
• Subjects: Hollow Fe3O4 fibers -- kapok fibers -- bio-template synthesis -- microwave absorption; Ferroelectric devices -- Periodicals; Integrated circuits -- Periodicals; 537.244805
• DOI: 10.1080/10584587.2016.1175889
• Languages: English
• ISSNs: 1058-4587

Abstract

ABSTRACT: A novel kind of microwave absorption composite in Ku-band with low cost, low density and strong absorption was prepared through Bio-template carbonization and solvothermal method. The phase structures and morphologies of the composite had been characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The microwave absorption properties of carbonized kapok fibers and Fe3 O4 /kapok fibers were measured by vector network analysis (VNA). When the sample thickness is 1.5 mm, the Fe3 O4 /kapok fibers have an optimal absorption peak value of about −24.1 dB at 17.4 GHz and its effective absorption bandwidth lower than −10 dB reaches 2.4 GHz (from 15.6 to 18.0 GHz). The reflection loss results indicate that the Fe3 O4 /kapok fibers possess higher microwave absorption in the Ku-band. A possible mechanism of the improved microwave absorption performance of the composite was discussed.