Seagate Technology Incorporated

Quantum Materials Design, Inc.

Michael Allen Seigler

Yuhang Cheng

Michael C Kautzky

Scott Michael Franzen

Tong Zhao

Kurt W Wierman

Ed F Rejda

Chubing Peng

William Albert Challener

Martin Giles Blaber

Hua Zhou

Thomas William Clinton

Weibin Chen

Mark William Covington

Amit Vasant Itagi

Jie Gong

Sethuraman Jayashankar

Robert Earl Rottmayer

Kaizhong Gao

YongJun Zhao

John Charles Duda

Nan Zhou

Edward Charles Gage

Xiaoyue Huang

Sharat Batra

Petrus Antonius Van Der Heijden

Huaqing Yin

Tae-Woo Lee

Justin Glen Brons

Xuhui Jin

Werner Scholz

Sarbeswar Sahoo

Andrew Joseph Boyne

Vivek Krishnamurthy

Michael L Mallary

Mark Anthony Gubbins

Edwin F Rejda

Ruoxi Yang

Gregory John Parker

Mourad Benakli

Ganping Ju

Kirill A Rivkin

Timothy John Klemmer

Erik Jon Hutchinson

James Dillon Kiely

Raul Horacio Andruet

Philip George Pitcher

Lien Lee

Michael Kevin Minor

Helene Parwana Habibi

Tim Rausch

Xiaomin Yang

Olle Gunnar Heinonen

Bin Lu

Paul E Anderson

Karim Tatah

Neil Zuckerman

Chris Rea

Jie Zou

David James Ellison

Ned Tabat

Steve C Riemer

Kalman Pelhos

Shuaigang Xiao

Christophe Daniel Mihalcea

Zheng Gao

Xiong Liu

David S Kuo

Kim Yang Lee

James Gary Wessel

Eric Walter Singleton

Nurul Amin

Koichi R Wago

Sining Mao

Jan-Ulrich Thiele

Roger Lee Hipwell, Jr

Jianhua Xue

Yingguo Peng

Taras Grigorievich Pokhil

Lihong Zhang

Zoran Jandric

Alexander Mikhailovich Shukh

Marcus Benedict Mooney

Gary Joseph Kunkel

John West Dykes

Yukiko A Kubota

Scott Eugene Olson

Bradley Jay Ver Meer

Steven Carl Riemer

Mary Cynthia Hipwell

Billy Wayne Crue

Yiao-Tee Hsia

Joseph Michael Stephan

Edward Stephens Murdock

David Allen Sluzewski

Xiaobin Zhu

Thomas Francis Ambrose

Hui Brickner

Shashwat Shukla

Nils Jan Gokemeijer

A heat-assisted magnetic recording head includes a near-field transducer, a waveguide, and a solid immersion mirror. The near-field transducer is configured to focus and emit an optical near-field. The waveguide is configured to receive electromagnetic radiation and propagate the electromagnetic radiation toward and proximal to the near-field transducer. The solid immersion mirror is disposed proximal to the near-field transducer and along a media-facing surface of the heat-assisted magnetic recording head. The solid immersion mirror includes a first segment and a second segment disposed on opposite sides of the near-field transducer relative to a cross-track dimension of the heat-assisted magnetic recording head. The solid immersion mirror includes a thermally robust metal having a melting temperature of at least 1500 degrees Celsius. The thermally robust metal is a primary material of the solid immersion mirror.

Heat-assisted magnetic recording head with a solid immersion mirror

Described are magnetic recording heads that include auxiliary current wires that drive the write pole tip, augmenting the main coils that provide magnetomotive force to the write pole. The auxiliary wires are provided in close proximity to the write pole tip near the media-facing surface of the recording head, and are preferably in closer proximity to the write pole tip than are the main coils. In certain writer designs that include one or more heat sink structures positioned near or around the write pole tip, such as may be found in heat-assisted magnetic recording writer constructions, the auxiliary wire(s) may be accommodated near or around the heat sink structures, or the heat sink structures themselves can serve as the auxiliary wires.

Magnetic recording head writer having an auxiliary magnetomotive force coil

A heat-assisted magnetic recording head comprises a near-field transducer (NFT). The NFT comprises a near-field emitter configured to heat a surface of a magnetic disk, and a hybrid plasmonic disk. The hybrid plasmonic disk comprises a plasmonic region and a thermal region. The plasmonic region comprises a first material or alloy that is a plasmonic material or alloy. The thermal region comprises a second material or alloy that is different than the first material or alloy.

Heat-assisted magnetic recording head near-field transducer with a hybrid plasmonic disk

A method involves forming a recording head that comprises a waveguide, a write pole, and a near-field transducer proximate the write pole. The near-field transducer has an extended portion extending towards a surface of the recording head and operable to direct plasmons to a recording medium. The surface of the recording head is lapped to form a lapped surface. A resist or hardmask is patterned on the lapped surface in a region that encompasses the extended portion. The lapped surface is etched with the resist or hardmask pattern to form a media-facing surface such that the extended portion protrudes beyond the media-facing surface by a first distance, and the resist or hardmask is removed.

Method for forming a HAMR recording head with a protruding near-field transducer

A recording head comprises a write pole extending to an air-bearing surface. A near-field transducer is positioned proximate a first side of the write pole in a down-track direction. A heatsink structure is proximate the near-field transducer and positioned between the near-field transducer and the write pole. The heatsink structure extends beyond the near-field transducer in a cross-track direction and extends in a direction normal to the air-bearing surface.

Heatsink structures for heat-assisted magnetic recording heads

A heat-assisted magnetic recording head includes a near-field transducer (NFT). The NFT includes a near-field emitter configured to heat a surface of a magnetic disk, and a plasmonic disk. The plasmonic disk is coupled to the near-field emitter and includes rhodium or iridium.

Heat-assisted magnetic recording head near-field transducer with a plasmonic disk

A heat-assisted magnetic recording head includes a near-field transducer (NFT). The NFT includes a near-field emitter configured to heat a surface of a magnetic disk, and a heat sink. The heat sink includes at least one of rhodium, copper, tungsten, tantalum, iridium, platinum, ruthenium, nickel, or iron.

Heat-assisted magnetic recording head near-field transducer with a heat sink

A recording head has a near-field transducer proximate a media-facing surface of the recording head. A waveguide overlaps and delivers light to the near-field transducer. Two subwavelength focusing mirrors are at an end of the waveguide proximate the media-facing surface. The subwavelength mirrors are on opposite crosstrack sides of the near-field transducer and separated from each other by a crosstrack gap. The subwavelength focusing mirrors each include a core having a first edge exposed at the media-facing surface. The core formed of a core material that is resistant to mechanical wear and corrosion, such as a dielectric or robust metal. A liner covers a second edge of the core facing the near-field transducer. The liner includes a plasmonic metal that is different than the core material, such as Au or Al.

Heat-assisted recording head having mechanically robust subwavelength mirror with plasmonic liner

A recording head includes a near-field transducer proximate a media-facing surface of the recording head and a waveguide that overlaps and delivers light to the near-field transducer. The recording head includes subwavelength-sized focusing mirror comprising first and second reflectors disposed on cross track sides of the near-field transducer. Each of the first and second reflectors is spaced apart from the media-facing surface by a distance, D, measured along an axis normal to the media-facing surface.

Recording head with focusing structure

A recording head has a near-field transducer proximate a media-facing surface of the recording head. A write pole has a leading edge proximate to and facing the near-field transducer at the media-facing surface. A magnetic shield faces the leading edge of the write pole at the media-facing surface and is magnetically coupled to the write pole. The magnetic shield has a notch centered over the near-field transducer.

Notched leading-edge shield for assisted magnetic recording head

A recording head has a near-field transducer proximate a media-facing surface of the recording head. The near-field transducer extends a first distance away from the media-facing surface. A waveguide overlaps and delivers light to the near-field transducer. Two subwavelength focusing mirrors are at an end of the waveguide proximate the media-facing surface. The subwavelength mirrors are on opposite crosstrack sides of the near-field transducer and separated from each other by a crosstrack gap. The subwavelength focusing mirrors each include a first material at the media-facing surface and a liner that covers an edge of the mirror.

Heat-assisted recording head having sub wavelength mirror formed of first and second materials

A recording head has a waveguide that delivers optical energy from an energy source and a write pole extending to a media-facing surface of the recording head. The recording head also has a near-field transducer coupled to receive the optical energy from the waveguide and emit surface plasmons from the media-facing surface towards a recording medium while the write pole applies a magnetic field to the recording medium. The near-field transducer has an extended portion that, as-manufactured, protrudes beyond the media-facing surface by a first distance.

Heat-assisted magnetic recording head with a near-field transducer extending beyond the media-facing surface

A device including a near field transducer, the near field transducer including gold (Au) and at least one other secondary atom, the at least one other secondary atom selected from: boron (B), bismuth (Bi), indium (In), sulfur (S), silicon (Si), tin (Sn), hafnium (Hf), niobium (Nb), manganese (Mn), antimony (Sb), tellurium (Te), carbon (C), nitrogen (N), and oxygen (O), and combinations thereof; erbium (Er), holmium (Ho), lutetium (Lu), praseodymium (Pr), scandium (Sc), uranium (U), zinc (Zn), and combinations thereof; and barium (Ba), chlorine (Cl), cesium (Cs), dysprosium (Dy), europium (Eu), fluorine (F), gadolinium (Gd), germanium (Ge), hydrogen (H), iodine (I), osmium (Os), phosphorus (P), rubidium (Rb), rhenium (Re), selenium (Se), samarium (Sm), terbium (Tb), thallium (Th), and combinations thereof.

Materials for near field transducers and near field transducers containing same

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Eden Prairie, MN, United States of America

Michael Allen Seigler