Furthermore, all the ε ′ curves show a decreasing trend with increasing frequency, which is indicative of a frequency dispersion behavior that can be explained by the increased lagging of polarization with respect to electric-field change at higher frequency. 39 This decreasing trend also occurs in the case of ε ′′.
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Reduced graphene oxide decorated with octahedral NiS<sub>2</sub>/NiS nanocrystals: facile synthesis and tunable high frequency attenuation.
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