Electromagnetic wave absorption properties of Fe3C/carbon nanocomposites prepared by a CVD method

Full X–Ku band microwave absorption by Fe(Mn)/Mn7C3/C core/shell/shell structured nanocapsules

“…During the past few years, there has been a growing and widespread interest in microwave absorbing materials due to their military and civil applications such as stealth defense system, microwave interference protection, and microwave darkroom [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Recent developments in microwave absorber technology have resulted in materials that can effectively reduce the reflection of electromagnetic signals on the one hand, and have good physical performance and lower production cost on the other hand [4][5][6][7][8][9][10][11][12][13][14][15].…”

“…Recent developments in microwave absorber technology have resulted in materials that can effectively reduce the reflection of electromagnetic signals on the one hand, and have good physical performance and lower production cost on the other hand [4][5][6][7][8][9][10][11][12][13][14][15]. It is well known that reflection loss (RL), in decibels (dB), can be used to characterize the absorption properties of microwave absorbing materials.…”

“…It is well known that reflection loss (RL), in decibels (dB), can be used to characterize the absorption properties of microwave absorbing materials. According to the transmission line model based on the assumption that the dielectric permittivity and magnetic permeability are intrinsic properties of the materials [9][10][11][12][13][14][15], RL of a metal-backed microwave absorbing layer is RL = 20 log 10 jZ tanh(kd) − 1 jZ tanh(kd) + 1 with Z = r ε r and…”

“…In addition, for core-shell structured nanocapsules, the values of the dielectric permittivity of shell and those of the magnetic permeability of the core can be easily altered to achieve the maximal absorption of the microwave energy. Among these nanocomposites, Fe-based nanocapsules are of great interest due to their typical ferromagnetic characteristics and potential application in microwave absorption [6,7,[9][10][11]13,15]. Some Fe-based nanocapsules, including Fe/C, Fe/SiO 2 , Fe/ZnO, FeCo/Al 2 O 3 , Fe(Mn)/ferrite [16,[19][20][21][22][23], etc.…”

Enhanced Wave‐Absorption Properties of Nanocomposites Based on the Synthesized Bi2S3 Nanorods and Polyvinylidene Fluoride

“…[7,8] Terada et al studied the wave-absorption property of Fe 3 C/carbon nanocomposites and obtained materials with absolute reflection loss over 20 dB in the frequency 6-14 GHz for the absorbers with a respective thickness of 1.5-3 mm. [9] Liu et al developed ferric nanowire nanocomposites possessing an absolute reflection loss over 20 dB at 5.6-18 GHz with an absorber thickness of 1.3-4.0 mm and up to 47 dB at 9.4 GHz with a thickness of 2 mm. [10] Chen et al discovered that a zinc oxide nanowire/ polyester nanocomposite possesses a relatively good electromagnetic wave-absorption property in the X band.…”