Western Digital (fremont), Inc.

Kyung Lee

Tsung Yuan Chen

Min Zheng

Shawn M Tanner

Mingjun Yu

Alexander V Demtchouk

Weigang Wang

Genji Tohmon

A magnetic write apparatus includes a pole and a near field transducer. The pole extends in a yoke direction from a media facing surface where the yoke direction extends perpendicular to the media facing surface. The near field transducer includes a near field transducer cap and a near field transducer nose. The near field transducer nose is separated from the pole by the near field transducer cap and a dielectric gap and the near field transducer nose comprises a bevel surface that forms a bevel angle with a plane extending in the yoke direction.

Heat assisted magnetic recording head having near-field transducer with a sloped nose

A method for fabricating a near-field transducer (NFT) for a heat assisted magnetic recording (HAMR) write apparatus is described. The HAMR write apparatus is coupled with a laser for providing energy and has a media-facing surface (MFS) configured to reside in proximity to a media during use. The method includes providing a stack on an underlayer. The stack includes an endpoint detection layer, an optical layer and an etchable layer. The optical layer is between the etchable and endpoint detection layers. The etchable layer is patterned to form a mask. A portion of the optical layer is removed. A remaining portion of the optical layer has a bevel at a bevel angle from the MFS location. The bevel angle is nonzero and acute. The NFT is provided such that the NFT has an NFT front surface adjoining the bevel and at the bevel angle from the MFS location.

Method for providing heat assisted magnetic recording write apparatus having a near-field transducer with a sloped nose

A heat assisted magnetic recording (HAMR) writer is described. The HAMR writer includes a laser, a polarization rotation plate and a HAMR transducer. The laser provides energy having a first polarization state. The polarization rotation is plate optically coupled with the laser and changes the first polarization state to a second polarization state. The transducer has an ABS, a waveguide, a main pole, at least one coil and a near-field transducer (NFT). The polarization rotation plate is between the transducer and the laser. The waveguide is optically coupled with the laser through the polarization rotation plate and directs the energy from the polarization rotation plate toward the ABS. The NFT focuses the energy onto a media. The NFT is optically coupled with the waveguide and receives energy having a third polarization state. The main pole writes to the media and is energized by the coil(s).

Heat assisted magnetic recording writer having an integrated polarization rotation plate

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Fremont, CA, United States of America

Kyung Lee