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Abstract
A chlorotrifluoroethylene monomer and gold were used as starting materials for the deposition of composite films by simultaneous plasma polymerization and magnetron sputtering in an rf glow discharge. Thin layers composed of a plasma polymer with embedded small gold grains (10–120 nm in diameter) and characterized by gold volume fractions up to 0.5 evoked an optical resonance in the visible region of light. Spectral dependence (0.35–2.0 μm) of the optical constants n(λ) and k(gl) calculated from the transmission and reflection data was compared with the characteristics predicted by four models of an effective medium: the Maxwell-Garnett, the Bruggeman self-consistent, the coated sphere and the probabilistic growth model. Additional film characteristics were estimated from the position of the resulting effective dielectric function in the complex plane with respect to the Wiener limits. The optical properties of the layers are discussed in light of the film microstructure.
Published Version
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