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9042048 Laser-ignited reactive HAMR bonding  
The present disclosure generally relates to a HAMR head and a method for fabrication thereof. The HAMR head has a write head with a waveguide extending therethrough. A laser diode is coupled to a...
9042207 Magnetic recording laser diode control  
Controlling a laser diode involves activating a first current source in preparation for writing to a magnetic recording medium. The first current source applies a threshold current to a laser...
9036307 Heat-assisted magnetic recording (HAMR) write head with recessed near-field transducer and optically transparent protective film  
A heat-assisted magnetic recording (HAMR) air-bearing slider has an optically-transparent protective film over the near-field transducer (NFT) to protect the NFT from excessive heat caused by the...
9030773 Sensing temperature at a slider protrusion region  
An apparatus includes a near-field transducer at or near an air bearing surface of the apparatus. A write pole is disposed at or near the air bearing surface and proximate the near-field...
9025420 Self-controlled laser pulsing for thermally assisted recording  
A method of storing data includes providing a write signal for a write head of a hard disk drive, generating a transition pulse signal derived from the write signal using a transition pulse...
9019646 Heat assisted magnetic recording device with pre-heated write element  
An apparatus includes a write element configured to apply a magnetic field to write data on a portion of a heat-assisted magnetic recording media in response to an energizing current. An energy...
9013967 Heat-dissipating stepped slider for a heat-assisted magnetic recording head  
In a heat-assisted magnetic recording (HAMR) hard disk drive, a heat-dissipating head slider assembly is described in which the slider is stepped on the disk-opposing side and a HAMR laser module...
9013820 Method of reducing thermal stress within a magnetic head  
Devices and methods for reducing thermal stress within a head of a storage device are disclosed. In one or more embodiments, a method includes writing a selected pattern to a storage medium of a...
9007713 Medium, method of fabricating a medium, recording system and method of controlling a recording system  
A medium may be provided. The medium includes a servo layer, a data recording layer, and a heat sink layer disposed between the servo layer and the recording layer.
9001629 Systems and methods for suppressing background energy of a waveguide in an energy assisted magnetic recording system  
Systems and methods for suppressing the background energy of a waveguide in an EAMR system are provided. One such system includes a near field transducer having a disk section and a pin section...
9001628 Assistant waveguides for evaluating main waveguide coupling efficiency and diode laser alignment tolerances for hard disk  
A heat assisted magnetic recording (HAMR) transducer on a slider and including first and second opposing surfaces, wherein the first surface is aligned to an air bearing surface (ABS) of the...
8995076 Head-medium contact detection using electromagnetic attraction  
An apparatus of the present disclosure generally includes a recording head, circuitry, a thermal sensor, and a detector. The recording head has an electromagnetic attraction to a recording medium....
8995079 Magnetic head, magnetic disk drive, and method of controlling magnetic head  
According to one embodiment, there is provided a magnetic head including a wave guide, a near field transducer, a writing magnetic pole, a magnetic core, a writing coil, and a first temperature...
8984739 Method of manufacturing a thermally-assisted magnetic recording head that suppresses protrusion of a plasmon generator  
A method of manufacturing a thermally-assisted magnetic recording head includes the steps of: forming a preliminary head section that has a surface to be polished and includes a magnetic pole, a...
8988813 Microwave-assisted magnetic recording and reproducing device  
A microwave-assisted magnetic recording and reproducing apparatus includes a microwave power generator, a microwave magnetic field generating element, and a thin film magnetic head that may record...
8988975 Thermally assisted magnetic head, method of manufacturing the same, head gimbal assembly, and hard disk drive  
A thermally assisted magnetic head includes a main magnetic pole layer, a near-field light generating layer having a generating end part generating near-field light arranged within a...
8982494 Head gimbal assembly and data recording and reproducing apparatus having the same  
A head gimbal assembly has a suspension configured to extend along a surface of a recording medium and to bend and deform in a thickness direction of the recording medium. A slider is provided on...
8982678 Multi-layer recording lamination for solid immersion mirror servo track writing  
A data storage media may have at least a multi-layer recording lamination with a predetermined coercivity. The multi-layer recording lamination can be configured to record at least one servo...
8971159 Light delivery apparatus  
A light delivery system in a slider includes a channel waveguide, a mode-index refractive surface, a solid immersion mirror, and a near field transducer. The mode-index refractive surface shapes...
8958168 Method and system for providing an NFT having improved mechanical stability  
A method and system provides an EAMR transducer. The transducer is coupled with a laser for providing energy and has an air-bearing surface (ABS) configured to reside in proximity to a media...
8953420 Method and system for aligning light source with waveguide coupler  
Light is guided from a light source into a waveguide coupler embedded in a slider. The light source is capable of being positioned in a cross-track, a down-track, and a vertical direction with...
8953272 Plasmonic transducer having two metal elements with a gap disposed therebetween  
An apparatus includes a waveguide configured to deliver light to a transducer region. The apparatus also includes a plasmonic transducer that has two metal elements configured as side-by-side...
8945733 Magnetic recording medium  
A magnetic recording medium in which information can be recorded using a heat-assisted magnetic recording method comprises a recording layer formed on a substrate. The recording layer has a...
8947985 Heat assisted magnetic recording transducers having a recessed pole  
A heat assisted magnetic recording (HAMR) write transducer has an air-bearing surface (ABS) configured to reside in proximity to a media during use and is coupled with a laser that provides...
8937783 Magnetic data recording system with improved servo capability for bit patterned recording  
A magnetic data recording system wherein the wherein adjacent track interference during writing is avoided by modulating the size of a write bubble on the magnetic media in response to a position...
8929016 Heater assembly and method of heating  
A magnetic recording head includes a magnetic writer comprising a main write pole and a return write pole. The magnetic recording head includes a write heater assembly comprising at least one...
8929013 Storage system with pattern dependent write  
A storage system with pattern dependent write includes a magnetic write head, a magnetic storage medium, a read channel operable to process write data to be recorded on the magnetic storage medium...
8896947 Disk storage apparatus and method for determining malfunction of high-frequency oscillating element  
According to one embodiment, a disk storage apparatus includes a magnetic head, a detector, a calculator, and a decision module. The magnetic head has a high-frequency assisted element disposed...
8891340 Heat source management in data storage device  
An apparatus and associated method is presently disclosed for a control circuitry capable of managing a heat source used in data storage applications. Various embodiments of the present invention...
8885280 Polarization rotator  
Implementations disclosed herein allow a magneto-optical polarization rotator to couple light from a light source of a HAMR recording device to waveguide attached to a slider. According to one...
8885301 Magnetic write head characterization with nano-meter resolution using nitrogen vacancy color centers  
A crystal film with one or more nitrogen vacancy centers is placed in a magnetic field produced by a recording head and excitation illumination and a varying excitation field is applied. A...
8873185 Thermally-assisted magnetic recording head  
The thermally-assisted magnetic recording head includes: a magnetic pole having an end exposed on an air-bearing surface; a waveguide; a plasmon generator formed essentially of a first metallic...
8861316 Write pole for recording head  
A write pole structure disclosed herein includes a write pole, a trailing shield, and a high magnetic moment (HMM) material layer on a surface of the trailing shield facing the write pole.
8861124 Integrated sensor for monitoring laser power in a heat assisted magnetic recording disk drive  
A heat-assisted magnetic recording (HAMR) transducer is coupled with a laser for providing energy and has an air-bearing surface (ABS) configured to reside in proximity to a media during use. The...
8861135 Thermally-assisted magnetic write head, head gimbal assembly, head arm assembly, and magnetic disk unit  
A thermally-assisted magnetic write head includes a waveguide, a magnetic pole, and a plasmon generator interposed between the waveguide and the magnetic pole. The magnetic pole includes a first...
8854930 Slider embedded photodetector for optical power monitoring in heat assisted magnetic recording  
Techniques for improving the recording quality during heat assisted magnetic recording (HAMR) by monitoring the power of a source used to heat a storage medium are described. In one example, a...
8848307 Active media for heat assisted magnetic recording (HAMR)  
An apparatus includes a magnetic recording layer and a thermally active material adjacent to and/or embedded in the magnetic recording layer, wherein the thermally active material has a thermal...
8842505 Magnetic disk device and method of controlling magnetic head  
According to one embodiment, a first magnetic head is used to record or reproduce data on or from the first disk surface and includes a first two-terminal element including a first positive...
8836949 Systems and methods for characterizing near field transducer performance at wafer level using asymmetric interference waveguides  
Systems and methods and apparatuses for characterizing near field transducer performance at wafer level using asymmetric interference waveguides are provided. One such system includes a light...
8837071 Sensing temperature at a slider protrusion region  
An apparatus includes a near-field transducer at or near an air bearing surface of the apparatus. A write pole is disposed at or near the air bearing surface and proximate the near-field...
8824085 Laser power control in a heat-assisted magnetic recording system  
A heat-assisted magnetic recording system may include, but is not limited to: at least one magnetic recording read/write head; at least one laser diode configured to illuminate at least a portion...
8824086 Plasmonic transducer having two metal elements with a gap disposed therebetween  
An apparatus includes a waveguide configured to deliver light to a transducer region. The apparatus also includes a plasmonic transducer that has two metal elements configured as side-by-side...
8817407 Heat assisted magnetic recording head  
An apparatus that includes a write pole, the write pole including a magnetic material; a near field transducer-heat sink (NFT-HS), the NFT-HS including a noble metal; and a power source configured...
8810946 Energy-assisted magnetic recording head and magnetic recording device  
A microwave-assisted magnetic recording system configured to perform magnetic recording with high density, including a high-frequency magnetic field generation element whose width is narrower than...
8810937 Compensating asymmetries of signals using piece-wise linear approximation  
A system including a first circuit, a second circuit, an amplifier, and a summer. The first circuit is configured to (i) select a first portion of a signal, and (ii) generate a first compensation...
8810947 Recessing a near field transducer in a heat-assisted magnetic recording head  
A recessed near field transducer (NFT) in a heat-assisted magnetic recording head is manufactured by applying Joule heating to the slider to induce a protrusion of materials of and around the NFT...
8804272 Clearance sensor and circuitry using adjustable channel parameters  
A transducer is configured to interact with a magnetic storage medium, a first channel comprises a first sensor and first circuitry configured to adjust a plurality of first channel parameters,...
8792312 Method and system for providing an energy assisted magnetic recording head  
A method and system for providing an energy assisted magnetic recording (EAMR) head are described. The method and system include providing a slider, an EAMR transducer coupled with the slider, and...
8786973 Thermally assisted magnetic recording medium and thermally assisted magnetic recording apparatus  
According to one embodiment, a thermally assisted magnetic recording method performs heating at a temperature higher than the ambient temperature of the perpendicular recording medium and lower...
8787134 Thermally assisted magnetic recording head inspection method and apparatus  
In a method and an apparatus for inspecting a thermally assisted magnetic recording head element, a specimen is mounted on a table movable in a plane of a scanning probe microscope device,...