In:
Chinese Physics B, IOP Publishing, Vol. 32, No. 5 ( 2023-05-01), p. 054202-
Abstract:
Intermetallic complexes of rare-earth and 3d transition metals with core-shell structures are commonly employed as microwave absorbing materials due to their high saturation magnetizations and natural resonance in GHz. Hence, we synthesized Y 2 Co 17 alloy via the co-precipitation reduction-diffusion technique, then coated the Y 2 Co 17 magnetic powders with SiO 2 to create Y 2 Co 17 @SiO 2 core-shell structures. The formation of Y 2 Co 17 @SiO 2 /polyurethane (PU) at various volume fractions and their magnetic, electromagnetic properties were investigated using x-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, and vector network analyzer. The microwave absorption characteristics of Y 2 Co 17 @SiO 2 /PU were also investigated at various volume fractions. We not only investigate the zero-reflection conditions of the samples with different volume fractions, but also show that every absorber has a strong reflection loss value (RL ≤ −65.00 dB) and excellent microwave absorption properties with an average RL of Y 2 Co 17 @SiO 2 /PU being below −10 dB at 8 GHz–18 GHz under different thicknesses, showing that the enhancement of microwave absorption performance arises from the balance between permeability and permittivity of absorber.
Type of Medium:
Online Resource
ISSN:
1674-1056
DOI:
10.1088/1674-1056/aca7f1
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2023
detail.hit.zdb_id:
2412147-2
