Abstract
In this work, the optical properties of carbon–nickel films deposited at different deposition times from 50 to 600 sec were investigated. The obtained data of the refractive index n can be analyzed to obtain the high–frequency dielectric constant which describes free carriers and the lattice vibration modes of dispersion. The lattice dielectric constant ε L and the plasma frequency ω p at 180 sec have maximum values 10.68 and 79.92x106 Hz, respectively. The free carrier electric susceptibility measurements in the wavelength range (300 – 1000 nm) are discussed according to the Spitzer–Fan model. It is shown that the electric susceptibility at 180 sec has a maximum value and with increasing wavelength it increases. The energy loss by the free charge carriers when traversing the bulk of the films at 180 sec has a maximum value and with increasing wavelength it decreases. The field emission scanning electronic microscopy (FESEM) images were used for estimation of particle size.
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Dalouji, V., Elahi, S. & Ahmadmarvili, A. Electric Susceptibility and Energy Loss Functions of Carbon-Nickel Composite Films at Different Deposition Times. Silicon 9, 717–722 (2017). https://doi.org/10.1007/s12633-016-9409-9
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DOI: https://doi.org/10.1007/s12633-016-9409-9