Preparation and electromagnetic characteristics of a novel iron-coated carbon fiber

• Published in: Journal of alloys and compounds 2004-02, Vol.365 (1), p.300-302
• Main Authors: Yang, Y., Zhang, B.S., Xu, W.D., Shi, Y.B., Zhou, N.S., Lu, H.X.
• Format: Article
• Language: English
• Subjects: Composite materials; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Domain effects, magnetization curves, and hysteresis; Electrochemical reactions; Exact sciences and technology; Magnetic measurements; Magnetic properties and materials; Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects; Physics; X-ray diffraction
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/S0925-8388(03)00677-7

A novel iron-coated carbon fiber was fabricated electrochemically. The magnetic properties, complex permeability, and complex permittivity were measured. It was found that iron-coated fiber–epoxy composites with different mass loadings have different magnetic resonance frequencies. The resonance frequency of the 75 wt% sample is higher than that of the 80 wt% sample due to the influence of the demagnetization field. The ε e′ value of both composite samples exhibits a high value in the frequency range of 2 to 18 GHz, which is due to the longer conducting length of the fiber and the good conductivity of the iron. The values of ε e″ are also high, which is attributed to the intrinsic electric property of the carbon fiber.