Western Digital Technologies, Inc.

Hgst Netherlands, B.v.

Dung Thi Nguyen

Cherngye Hwang

Randall George Simmons

Eduardo Torres Mireles

Mousumi Mani Biswas

Que Adrong

A heat-assisted magnetic recording (HAMR) head has a protective multilayer confined to a window of the disk-facing surface of the slider that surrounds the near-field transducer (NFT) end and write pole end. The protective multilayer is made up of alternating films of a metal and diamond-like carbon (DLC). All of the metal films are formed of the same metal selected from Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and W, with the preferred metal being zirconium (Zr). A slider protective overcoat may be formed over the entire disk-facing surface in both the window region and the non-window region, with the protective multilayer formed on the slider overcoat in the window region. The overcoat may be absent in the window region, in which case an adhesion film is on the NFT and write pole ends in the window region, with the protective multilayer being formed on the adhesion film.

Heat-assisted magnetic recording (HAMR) write head with protective multilayer film for near-field transducer

A method for forming a protective overcoat onto a tape bearing surface of a tape head used for magnetic tape recording. In order to ensure optimal surface tension and liftoff properties of the ink mask, the tape bearing surface is treated with a first application of ethanol, followed by an application of polydimethylsiloxane, followed by a second application of ethanol. After this treatment an ink mask can be printed onto the tape bearing surface so as to form a mask having an opening over the location of the magnetic transducer. An etching can then be performed followed by the deposition of a protective coating such as alumina.

Method for manufacturing a magnetic tape head using an ink mask formed by printing

Growing community of inventors

San Jose, CA, United States of America

Dung Thi Nguyen