Abstract
Carbon overcoats play an important role in the corrosion protection of recording media used in hard disk drive technology. For achieving high areal density, there is a need to reduce the magnetic spacing. Since Carbon overcoat thickness is one of the major contributors to the spacing, it is essential to design suitable overcoats that can protect the media even when they are thin. Filtered cathodic vacuum arc (FCVA) has been studied in the past as potential media overcoat. In order to achieve desired property of FCVA carbon, it is essential to apply a suitable bias voltage, which results in an energetic carbon deposition on the magnetic layer of the recording media [1]. We have recently reported the preliminary results of damage caused on antiferromagnetically coupled (AFC) media layer based on XPS and some magnetic characterization techniques [2]. In this paper, we focus our attention on the implantation effects of energetic carbon on the magnetic and structural properties of recording media of two types; AFC and a single layer, in order to gain more meaningful insight on the implantation and its effect.
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