Tailoring GO/BaFe₁₂O₁₉/La_0.5Sr_0.5MnO₃ ternary nanocomposite and investigation of its microwave characteristics

Novel, promising, and broadband microwave‐absorbing nanocomposite based on the graphite‐like carbon nitride/CuS

“…The results imply that the curves of the g‐C 3 N 4 /PMMA and CuS/PMMA nanocomposites were approximately constant, derived from various eddy currents in inner and outer hierarchical tri‐s‐triazine rings and substantial electron gyrations within the CuS 2D nanoplates due to its exclusive morphology (Scheme ), whereas eddy current in g‐C 3 N 4 /CuS/PMMA nanocomposites was diminished due to in situ preparation of the g‐C 3 N 4 /CuS nanocomposite leading to more spin pinning at interfaces. It is clear that magnetic and electric fields can be created by each other, defined by Lenz's and Faraday's law . The considerable electron gyrations within the absorbing mediums lead to emerge a secondary magnetic field bringing the magnetic loss of the prepared nanocomposite.…”

“…As shown, the appeared peaks at 2θ = 26.79, 27.32, 28.87, 31.39, 32.42, 47.41, 52.20, 59.01° corresponding to the (100), (101), (102), (103), (006), (107, 110), (108), (116) crystal planes confirmed that pure crystalline phase of hexagonal CuS has been synthesized without any ambiguous peak as well as using g‐C 3 N 4 and mixture of water/ethanol in the experimental treatments did not have any effect on crystalline purity of synthesized CuS hexagonal structure, associated by Joint Committee on Powder Diffraction Standards (JCPDS): [01–078‐0876]. The size of CuS nanoplates was 10.3 nm according to the Scherrer equation given by the full width at half maximum of (103) crystal plane. The g‐C 3 N 4 has been synthesized with conjugated tri‐s‐triazine blocks.…”

“…More significantly, the considerable features of microwave‐absorbing materials in the military field applications as well as electronic devices applying high frequencies have persuaded the researchers to follow and architect the microwave absorbers . Recently, the conductive polymers including graphene, polyaniline, carbon fiber, polythiophene, polydopamine, carbon nanotubes (CNT), polypyrrole, and carbon fibers due to their permittivity were used to prepare microwave‐absorbing materials, illustrating desirable microwave‐absorbing performance.…”

Preparation of modified SrAl 1.3 Fe 10.7 O 19 nanostructures and evaluation of size influence on its optical and magnetic properties

“…X‐ray diffraction (XRD) patterns were obtained by a Philips PW1800 instrument operated by a Cu tube (0.15418 nm), at 30 mA, 2 θ = 10–80, and 40 kV. The crystallite size of the nanostructures was revealed by Debye–Scherrer equation [13]. The optical performance was explored by Shimadzu MPC‐2200.…”

“…Moreover, it is found that the leaching processes [11, 12] as well as capping agents [4, 7] pave the way for the tuning size. The obtained results have demonstrated that the tailoring size and shape can improve the magnetic characteristics, governed by Snoek's law [7, 13, 14]. Co‐precipitation [15–17], sol–gel [18, 19], and hydrothermal [20–22] are the main methods applied to prepare magnetic NPs.…”