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- W3120056784 endingPage "158371" @default.
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- W3120056784 abstract "The present study focusses on the design of microwave absorbers based on CoNi-BTC (CN) mixed with reduced graphene oxide and covered by PDOT to form [email protected]/G nanocomposites. They were successfully synthesized via solvothermal method followed by pyrolysis and then characterized with XRD, XPS, VSM and FESEM. CN nanoparticles have an approximately uniform spheroidal monodispersed morphology with 300–400 nm diameter, and are uniformly covered by PDOT. XRD performed on [email protected]/G sample clearly suggests the coexistence of both [email protected] and graphene phases in the nanocomposite while XPS characterization confirms that Co, Ni, C, and O are detected in the [email protected]/G sample. VSM measurements reveal S-like hysteresis loops for both CN, CN/G and [email protected]/G, confirming soft magnetic materials and ferromagnetic behavior which linked to the presence of ferromagnetic Co and Ni nanoparticles in the nanocomposite powder. Electromagnetic parameters, namely dielectric permittivity, magnetic permeability and associated losses, are measured for [email protected]/G composite sample dispersed into epoxy resin with 15%, 20%, 25% and 30% concentration using a vector network analyzer. Measured parameters are used to predict by simulations the return losses (RL) for various combinations of thickness and concentration. It is concluded from the exhaustive comparison using a FOM gauge that sample having 30% concentration and thickness 2.4 mm achieves the best performance, i.e. a value FOM equal to 1150 and minimal return losses RL equal to −50 dB." @default.
- W3120056784 created "2021-01-18" @default.
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- W3120056784 date "2021-05-01" @default.
- W3120056784 modified "2023-09-26" @default.
- W3120056784 title "Rational design of CoNi@C-BTC/rGO nanocomposite coated with PEDOT polymer towards enhancing the microwave absorption in X-band frequency" @default.
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- W3120056784 doi "https://doi.org/10.1016/j.jallcom.2020.158371" @default.
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