Western Digital Technologies, Inc.

Mousumi Mani Biswas

Marc A Finot

Cherngye Hwang

Barry C Stipe

Takuya Matsumoto

Bernhard E Knigge

Randall George Simmons

Dung Thi Nguyen

Utis Cumhnoo

Ozgun Suzer

Bin Ouyang

A slider for heat assisted magnetic recording (HAMR) is provided. The slider includes a writer for writing data to a HAMR medium, a reader for reading data stored on the HAMR medium, a near field transducer (NFT), a first waveguide optically coupled to the NFT, a slider laser configured to generate and transmit a first light energy to the first waveguide such that the NFT causes a portion of the HAMR medium to heat up, to assist the writer for writing data to the HAMR medium, and a second waveguide optically coupled to the NFT, for transmitting a light energy from an external laser to the NFT to optically anneal the NFT during a fabrication process of the slider.

Methods and apparatuses for localized annealing of sliders configured for heat assisted magnetic recording

A write pole in a heat assisted magnetic recording (HAMR) head for writing to a HAMR medium is provided that includes a recessed part proximal to a near field transducer (NFT) in the HAMR head to protect the write pole from corrosion. The recessed part extends from a portion of a bottom surface of the write pole along a portion of a side of the write pole proximal to the NFT. Within the recessed part, a pole pedestal may be formed of a material that is resistant to corrosion. The pole pedestal may have a rectangular, chamfered, or L-shape. The recessed part may further be induced on the portion of bottom surface of the write pole that extends along the portion of the side of the write pole.

Methods of protecting write pole from corrosion in HAMR head

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

Lubricants having perfluoropolyether side chains which have a high thermal stability and high shear modulus.

Lubricants with high thermal stability for heat-assisted magnetic recording

A disk drive includes a disk drive base, a rotating spindle attached to the disk drive base, and a disk mounted on the rotating spindle. A disk drive cover is attached to the disk drive base to enclose the disk in a disk drive enclosure. A filter within the disk drive enclosure includes first and second nanoporous adsorbent materials, each being either a metal organic framework material or a covalent organic framework material. The first nanoporous adsorbent material is fluorinated, and the second nanoporous adsorbent material is not fluorinated.

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Redwood City, CA, United States of America

Mousumi Mani Biswas