Hydroxyl groups and a-C:H and a-C:H(Me) structures

IR absorption spectra of hydroxyl groups in a-C:H and a-C:H(Me) (Me = Cu, Co) films grown by magnetron cosputtering of graphite and metal targets in argon-hydrogen plasma were studied. The hydroxyl band shape was analyzed using published data on the dependence of the O-H stretching vibration frequency on the distance from the nearest oxygen atom. It is demonstrated that the hydroxyl band shape is related to the character of interaction between an encapsulated metal and a carbon backbone of the film.

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