Abstract
Pole-tip recession (PTR) in magnetic tape heads is one of the major challenges faced in magnetic tape recording, which causes an increase in the magnetic spacing. In addition, tribo-electrochemical reactions can also occur through direct contact between the read/write elements and the tape material, resulting in the formation of metallic deposits. Hence, the application of an ultrathin, wear durable, electrically insulating and chemically inert overcoat on the tape-bearing surface of the head is one possible way to alleviate the issues of PTR and tribo-chemical interactions. In this chapter, the feasibility of ultrathin bi-layer SiNx/C overcoats for functional tape heads is investigated.
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