Abstract
This work was supported in part by FP7-PEOPLE-2013-IRSES-610875 NAmiceMC, FP7 Twinning Grant Inconet EaP 004. P. Kuzhir is thankful for support by Tomsk State University Competitiveness Improvement Program. Lab-STICC is UMR CNRS 6285.
Highlights
The design and construction of compact multifunctional, thermally stable microwave radiation absorbers is technologically important for a number of applications
Composite materials with a refractive index close to the maximum of absorption displayed in Fig. 1 can be fabricated by mixing magnetic particles, piezoelectric particles, and carbon nanotubes in a phosphate ceramic matrix
The addition of MWCNTs in the composite sample can significantly change its electromagnetic properties. This is consistent with many previous investigations [17, 18], and provides a simple way to reach the maximum absorption in free space using this type of ceramics
Summary
The design and construction of compact multifunctional, thermally stable microwave radiation absorbers is technologically important for a number of applications. The role of ferromagnetic resonance [7,8,9], Ohmic losses [10,11,12], dipole relaxation [13] and lossy scattering on the periodic structure of metamaterials [14] are some of the currently pursued questions Some of these physical mechanisms can be efficiently combined in (nano)composite materials. A 1 mm-thick single layer of a homogeneous material can absorb no more than 53% of the power of the incident radiation at 30 GHz. The only way of increasing the absorption level is by increasing the total thickness of the composite.
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