Abstract: A recording head includes one or more transducer elements, and an electrically insulative layer encasing the one or more transducer elements. The recording head also includes a substrate below the electrically insulative layer. The recording head further includes a heat sinking layer between the electrically insulative layer and the substrate.

Abstract: A coil component includes: first and second magnetic cores having first and second flat plate portions; a winding having a hollow core portion; first and second heat dissipation metal plates having first and second heat dissipation plane and first and second heat conduction portions, at least either one of the first and second flat plate portions has a middle leg, the middle leg is inserted into the hollow core portion of a winding, and the first magnetic core and the second magnetic core are combined in such a way that the first flat plate portion and the second flat plate portion face each other, the first heat dissipation plane portion is closely attached to the first flat plate portion and the second heat dissipation plane portion is closely attached to the second flat plate portion, the first heat conduction portion is connected to the second heat conduction portion.

Abstract: A heat-assisted magnetic recording (HAMR) head has a gas-bearing slider that supports a a main magnetic pole, a near-field transducer (NFT) and a waveguide optically coupled to the NFT. Optically reflective side shields are located adjacent the cross-track sides of the waveguide at the slider's gas-bearing surface (GBS). The side shields may also be located adjacent the cross-track sides of the NFT and extend in the along-the-track direction to the write head's magnetic return pole. The cross-track gap width between a portion of the side shields adjacent the NFT at the GBS may be different from the cross-track gap width between a portion of the side shields adjacent the waveguide end at the GBS.

Abstract: Embodiments herein describe optical assemblies that use a spacer element to attach and align a laser to a waveguide in a photonic chip. Once aligned, the laser can transfer optical signals into the photonic chip which can then perform an optical function such as modulation, filtering, amplification, and the like. In one embodiment, the spacer element is a separate part (e.g., a glass or semiconductor block) that is attached between the photonic chip and a submount on which the laser is mounted. The spacer establishes a separation distance between the photonic chip and the submount which in turn aligns the laser with the waveguide in the photonic chip. In another embodiment, rather than the spacer element being a separate part, the spacer element may be integrated into the submount.

Abstract: Devices having an air bearing surface (ABS), the device including a near field transducer, the near field transducer having a peg and a disc, the peg having a region adjacent the ABS, the peg including a plasmonic material selected from gold (Au), silver (Ag), copper (Cu), ruthenium (Ru), rhodium (Rh), aluminum (Al), or combinations thereof; and at least one other secondary atom selected from germanium (Ge), tellurium (Te), aluminum (Al), antimony (Sb), tin (Sn), mercury (Hg), indium (In), zinc (Zn), iron (Fe), copper (Cu), manganese (Mn), silver (Ag), chromium (Cr), cobalt (Co), and combinations thereof, wherein a concentration of the secondary atom is higher at the region of the peg adjacent the ABS than a concentration of the secondary atom throughout the bulk of the peg. Methods of forming NFTs are also disclosed.

Abstract: A recording head includes a waveguide core layer that delivers light from a light source to a region proximate a magnetic write pole. A near-field transducer that is formed of a thin metal film is deposited over the waveguide core layer. The near-field transducer includes an enlarged part with two straight edges facing a media-facing surface and at obtuse angles relative to the media-facing surface. A peg extends from the enlarged part towards the media-facing surface. The near-field transducer includes a metal aperture plate at the media-facing surface. The metal aperture plate surrounds at least three sides of the end of the peg.

Abstract: A stacked body includes a base including insulating base material layers made of thermoplastic resin and stacked, a circuit including a conductive pattern located on the insulating base material layers, and a dummy pattern electrically isolated from the circuit and extending along a portion of the circuit outside of the circuit on the insulating base material layers on which the conductive pattern is located in a plan view. The conductive pattern includes a linear portions at an outermost side of the circuit in a plan view. A bent portion or a wide portion, which has a larger width than the other linear portions in a direction perpendicular or substantially perpendicular to a direction in which a linear portion extends, in a plan view, is located on at least one of the linear portion of the conductive pattern and the dummy pattern extending along the linear portion.

Abstract: An electromagnet that increases electromagnetic force involved with a current flowing through a coil includes a stacked body including a plurality of base material layers, a coil including an in-plane coil conductor on one main surface of each of the base material layers, and an electrically isolated dummy pattern extending along at least a portion of the coil outside of the in-plane coil conductor on each of the base material layers in a plan view.

Abstract: An optically shielded TAMR (thermally assisted magnetic recording) write head has a metal waveguide blocker formed against a distal end of a waveguide and a pair of symmetrically disposed optical side shields formed to either side of a plasmon generator formed above the waveguide. The waveguide focuses optical radiation on the adjacent plasmon generator where it excites plasmon modes that heat the recording medium with near-field energy and the waveguide blocker prevents excess optical radiation from blurring the spot on the recording region. The optical side shields further restrict loosely coupled optical radiation from reaching the recording region and blurring the optical spot and improves down-track and cross-track thermal gradients.

Abstract: A data storage device is disclosed comprising a head actuated over a disk, wherein the head comprises a laser configured to heat the disk while writing data to the disk. At least four different laser powers are applied to the laser and a fly height of the head over the disk is measured at each laser power. A lasing threshold power for the laser is detected based on the measured fly heights.

Abstract: A data writer may be configured with at least a write pole continuously extending from an air bearing surface to a via. The write pole can contact at least one yoke that contacts the write pole. The write pole and yoke may each be disposed between and separated from a write coil that has a single turn and continuously extends to opposite sides of the write pole.

Abstract: Apparatuses and systems for enabling electrical communication with a device positionable within a body cavity of a patient. Apparatuses and systems for magnetically positioning a device within a body cavity of a patient. Medical devices. Methods of use.

Abstract: The present invention is directed to a slider that includes at least one fluid pathway that is in fluid communication with an air bearing face and/or the trailing edge face of the slider. The at least one fluid pathway is configured to propel/transport a fluid such as a lubricant toward at least one side face via capillary action. The present invention is also directed to related apparatuses and methods.

Abstract: A thermally-assisted magnetic recording head includes a main pole, a waveguide, and a plasmon generator. The waveguide includes a core and a cladding. The main pole and the core are located on the same side in the direction of travel of a recording medium relative to the plasmon generator. The main pole has a first end face located in the medium facing surface, and a second end face opposite to the first end face. The core has a front end face opposed to the second end face of the main pole. The cladding includes an interposition section interposed between the front end face of the core and the second end face of the main pole. The front end face of the core and the second end face of the main pole are inclined with respect to the medium facing surface.

Abstract: One embodiment generally relates to a magnetic recording head. The magnetic recording head has a body having an upper surface and a media bearing surface, a spot size converter disposed in the body and extending from the upper surface to the media bearing surface. The spot size converter has a core, comprising a first portion having a rectangular wall extending below the upper surface; and a second portion having a trapezoidal wall extending below the first portion. The magnetic recording head additionally has a first cladding adjacent to the spot size converter in an in-surface direction of the spot size converter, wherein the first cladding has a first refractive index lower than a refractive index of the spot size converter.

Abstract: An optical device includes a near field transducer; and a dielectric resonant structure coupled to the near field transducer; wherein the dielectric resonant structure comprises a dielectric material that decreases a dissipation of energy in the dielectric resonant structure, relative to other dissipations of energy associated with other materials; and wherein the decrease in the dissipation of energy increases an efficiency of energy transfer from the near field transducer to a target structure, relative to other efficiencies of energy transfer from the near field transducer to the target structure.

Abstract: An apparatus includes a slider, a light source disposed upon an outer surface of the slider and a projection extending above the outer surface of the slider. The light source comprises a resonant cavity aligned with the outer surface of the slider. The projection comprises an optical turning element that is optically coupled to the light source. Also included are methods of fabrication thereof.

Abstract: A test reagent container including a discharge port, formed by depressing a projecting part formed on a container bottom part, through which content can be easily and reliably discharged. The test reagent container includes: a bottom part; a peripheral wall raised approximately perpendicularly from a periphery of the bottom part; and a storage part defined by the bottom part and peripheral wall. A projecting part is formed on the bottom part in a projecting manner toward outside the container. A proximal end of the projecting part is formed in a bendable manner relative to the bottom part, and an easily breakable part is formed on a periphery of the projecting part except for the proximal end of the projecting part. The easily breakable part is broken when the projecting part is depressed from outside the container to be pushed into the inside of the container to form a discharge port.

Abstract: A thermally-assisted magnetic recording head of the invention includes: a waveguide; a plasmon generator; and a light-absorbing protrusion layer provided on a leading side of the plasmon generator. A ratio W1/W2 is within a range from 2/3 to 55/3, where W1 is a width of the light-absorbing protrusion layer in an air-bearing surface, and W2 is a width of the waveguide in the air-bearing surface.

Abstract: A heat-assisted magnetic recording (HAMR) head in which the core of the optical waveguide has an end face that abuts the NFT and the write pole lip has a diffusion barrier between the end face of the waveguide core and the write pole lip. The diffusion barrier layer may also be located between the waveguide core end face and the NFT, in which case it is formed of an optically transparent material, like TaNx, TiNx, ZrNx, HfNx, NbNx, CrNx, VNx, TiC, TaC, WC, SiC or SiNx, or a layer of Au, Ru, Rh or Ir with a thickness less than 5 nm. In addition to being located between both the NFT and the write pole lip and the waveguide core end face, the diffusion barrier layer may also be located between the waveguide core and the lower waveguide cladding layer.

Abstract: Implementations disclosed herein provide a transducer head including a writer feature extending to a transducer head surface, the transducer head surface being configured to face a storage medium surface; and a bumper structure configured on the transducer head surface, the bumper structure configured to be proximal to the writer feature and to protrude beyond the writer feature in response to energy.

Abstract: A disk drive is disclosed comprising a disk, and a slider comprising a head, where the head comprises a write component electrically insulated from the slider. A bias voltage is applied to the write component, and a current flowing between the write component and the disk is measured, wherein the current is indicative of a fly height of the head.

Abstract: According to one embodiment, a magnetic recording head includes a medium-facing surface, a near-field transducer partially exposed in the medium-facing surface, and a magnetic pole including a distal end surface and a pole end surface facing the near-field transducer. The pole end surface in the medium-facing surface is asymmetric with respect to a central axis passing through a center of the near-field transducer and extending in a longitudinal direction of the medium-facing surface.

Abstract: A recording head for recording information on a rotating recording medium of a storage device includes a main magnetic pole which generates a recording magnetic field in a direction perpendicular to a recording medium facing surface of the magnetic recording head, and a light generating element which is provided on a leading side of the main magnetic pole, and generates light for heating the recording layer of the recording medium. The main magnetic pole includes an end surface facing the light generating element that is inclined with respect to the direction perpendicular to the recording medium facing surface toward the light generating element.

Abstract: A return path section includes first and second yoke portions and first, second and third columnar portions. The first and second yoke portions and the first columnar portion are located on the same side in the direction of travel of the recording medium relative to a wave guide core. The second and third columnar portions are located on opposite sides of a plasmon generator and connected to a shield. The first yoke portion connects a main pole to the first columnar portion. The second yoke portion connects the first columnar portion to the second and third columnar portions. A coil is wound around the first columnar portion.

Abstract: A recording head for recording information on a rotating recording medium of a storage device includes a main magnetic pole which generates a recording magnetic field in a direction perpendicular to a recording medium facing surface of the magnetic recording head, and a light generating element which is provided on a leading side of the main magnetic pole, and generates light for heating the recording layer of the recording medium. The main magnetic pole includes an end surface facing the light generating element that is inclined with respect to the direction perpendicular to the recording medium facing surface toward the light generating element.

Abstract: According to an embodiment, a microprobe includes a base and a lever. The base includes a first electrode provided on a surface thereof. The lever is supported by the base and includes a second electrode and a third electrode. The second electrode is connected between the first electrode and the third electrode. The third electrode is formed to project from the second electrode in a first direction in a main surface of the lever. A width of the third electrode in a second direction perpendicular to the first direction in the main surface defines a width of an electrical contact area when a scanning operation is performed by use of the third electrode in a third direction perpendicular to the main surface.

Abstract: A return path section includes first and second yoke portions and first, second and third columnar portions. The first and second yoke portions and the first columnar portion are located on the same side in the direction of travel of the recording medium relative to a wave guide core. The second and third columnar portions are located on opposite sides of a plasmon generator and connected to a shield. The first yoke portion connects a main pole to the first columnar portion. The second yoke portion connects the first columnar portion to the second and third columnar portions. A coil is wound around the first columnar portion.

Abstract: A method of radially positioning a heat assisted magnetic recording (HAMR) head writes data to a first band, wherein a radial position of the HAMR head within each data track is defined by a positional bias and a track location. A determination is made regarding whether a threshold has been reached with respect to the first band. If the write threshold has been reached with respect to the first band, then the positional bias associated with the first band is modified to evenly distribute thermal exposure of data tracks in the first band.

Abstract: A near-field transducer includes an enlarged transducer portion of plasmonic material extending from an input end to an output end, a surface of the transducer portion including a trench running between two raised portions of the plasmonic material, the trench extending at least partially from the input end to the output end. A peg of the plasmonic material is disposed on the output end of the transducer portion and extends from the output end toward the air bearing surface of a heat assisted magnetic recording slider.

Abstract: 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 control element. The near field transducer is disposed on an ABS surface and to which light is guided from the wave guide. The writing magnetic pole is disposed on the ABS surface. The magnetic core is connected to the writing magnetic pole so as to generate a magnetic field from a portion of the writing magnetic pole close to the ABS surface. The writing coil is disposed so as to go around the magnetic core. The first temperature control element is disposed in contact with a region of a first side surface of the wave guide near the near field transducer.

Abstract: A system includes a magnetic head, a magnetic medium, a drive mechanism for passing the magnetic medium over the magnetic head, and a controller electrically coupled to the magnetic head for controlling operation of the magnetic head, wherein the magnetic head has a write element, a read element, a substrate that is an alloy material having greater than about 50 at. % TiC, and a heater element positioned between the read element and the write element, the write element being positioned nearer to the substrate than the read element such that heat generated by the write element during write operations is dissipated by the substrate, and the heater element being adapted for inducing protrusion of portions of an air bearing surface (ABS) of the magnetic head to adjust a clearance between the portions of the ABS and the magnetic medium.

Abstract: The embodiments of the present invention generally relate to a magnetic head having a magnetic lip. The vertical sides and the bottom of the magnetic lip are covered by one or more conductive layers. In one embodiment, the bottom of the magnetic lip is covered by a first conductive layer and the vertical sides of the magnetic hp are covered by a second conductive layer. The conductive layers are made of a material that would not react with oxygen, thus no oxide films are formed on the vertical sides and the bottom of the magnetic lip during the manufacturing of the magnetic head.

Abstract: In one embodiment, a system includes a magnetic head having a write portion having a main pole, a near field transducer comprising a conductive metal film having outer regions extending from an active region, and an optical waveguide for illumination of the near field transducer, wherein the conductive metal film extends in a cross track direction for a width at least 200% greater than a width of the active region of the conductive metal film, wherein a portion of the main pole extends along the conductive metal film in a cross track direction for a width at least 200% greater than the width of the active region of the conductive metal film.

Abstract: A plasmon generator has a front end face, a first metal layer, a second meta-field light based on a surface plasmon. The intermediate layer is interposed between the first metal layer and the second metal layer. Each of the first metal layer, the second metal layer and the intermediate layer has an end located in the front end face. Each of the first and second metal layers is formed of a metal material. The intermediate layer is formed of a material higher in Vickers hardness than the metal material used to form the first metal layer and the metal material used to form the second metal layer.

Abstract: 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.

Abstract: Apparatus and systems create differential drive signals suitable for HAMR data recording. A laser diode differential driver provides heating current pulses at a time ?1. The pulses energize a laser diode to pre-heat the magnetic medium to be written. Some embodiments duplicate portions of the laser diode circuit architecture to create a magnetic write head differential driver. The write head driver provides write current pulses to a magnetic write head in one direction with ?1 timing and in the opposite direction with ?2 timing. Both drivers utilize sets of reference voltages capable of being switched to one terminal or the other of the element to be driven. In the laser diode case, the common mode is split between the anode and cathode sections of the driver. A feedback element is added between the cathode and anode sections to provide current accuracy independent of the electrical characteristics of the selected laser diode.

Abstract: The present invention relates to a plasmon generator, in which a surface plasmon is excited by application of light. The plasmon generator extends along one direction. The plasmon generator includes a first end surface that is positioned on one end in the one direction and at which near-field light is generated along with the excitation of the plasmon; and a second cross section that is substantially parallel to the first end surface and is away from the first end surface. The first end surface has a polygonal shape that does not have a substantially acute inner angle. The second cross section has an upper part that has a shape substantially the same as or similar to that of the first end surface and a flare shaped lower part that is connected to the upper part and has a width that increases as it is far from the upper part.

Abstract: Implementations disclosed and claimed herein provide a write head core located in a slider, the write head core comprising a first end operative to serve as a write pole, a second end operative to serve as a return pole, wherein the first end comprises a substantially smaller cross-sectional area than the second end, and wherein the write head core has a substantially smooth curvature.

Abstract: A thermally assisted magnetic recording head includes core that propagates laser light as propagation light, a near-field light generator that faces a portion of the core and extends to an air bearing surface (ABS), the near-field light generator coupled to the propagation light propagating through the core so as to generate a surface plasmon, propagating the surface plasmon to an end part facing the ABS, and generating near-field light at the end part to irradiate the near-field light to a magnetic recording medium, a main magnetic pole layer provided in the vicinity of the near-field light generator where an end part is positioned on the ABS, a laser diode that generates laser light of wavelength 890 nm to 1,000 nm and enters the laser light into the core, and a photodiode provided on a silicon substrate measures an intensity of the laser light entering from the laser diode to the core.

Abstract: A polarization converter of the invention includes a core part that wave-guides an electromagnetic wave and a cladding part that is provided around the core part. The core part includes a conversion part converting a polarization state of the electromagnetic wave. A cross-sectional shape of the conversion part in a plane orthogonal to a propagation direction of the electromagnetic wave is a shape formed by cutting off a portion of a rectangular or square shape along a jagged diagonal line.

Abstract: A near-field light generating element has a core that propagates light flux from a light incident side to a light emission side while focusing the propagating light flux. A near-field light generating portion in the form of a metal film generates near-field light from the light flux. The core includes a first core, and a second core covering a side surface of the first core, and the core is formed in a polygonal shape when viewed from a Z direction. The metal film is placed on a side surface in the core, and is formed so that a width of an interface between the metal film and the core is narrower than a width of the side surface of the core.

Abstract: A metallic ring is made of two metals, wherein one metal forms a major arcuate portion and the other a minor arcuate portion of the ring, thereby forming a thermocouple-type structure as a result of the two inter-metallic junctions. The metallic ring supports a surface plasmon whose energy is matched to the energy, i.e. wavelength, of an incident light beam so that the oscillating electromagnetic field of the light resonates with the plasmon. The resonating plasmon causes a temperature difference to arise between the two inter-metallic junctions in the ring. The different Seebeck coefficients of the two metals results in the temperature difference causing a net current to flow around the ring, which in turn generates a magnetic field. Such a thermoelectric metamaterial ring transforms high frequency optical energy into long duration magnetic radiation pulses in the terahertz range.

Abstract: A method of manufacturing a near-field light generating element includes a first cladding forming process of forming a first cladding on a substrate, a near-field light generation portion forming process of forming a metal film base material on the first cladding, a core forming process of forming a core base material so as to cover the metal film base material, a single patterning process of collectively patterning the core base material and the metal film base material to form the core and the metal film, respectively, and a second cladding forming process of forming a second cladding so as to interpose the core between the second cladding and the first cladding.

Abstract: While a heat-assisted, magnetic recording media is not being written to, heat applied from a write head to the recording media to facilitate writing to the recording media is removed. Power is applied to a write coil of the write head to control spacing between the write head and the recording media when the recording media is not being written to.

Abstract: In an example, a method comprises aligning a central axis of a paddle portion on a write pole circuit to be substantially perpendicular to an adjacent magnetic surface, and bending a central axis of an extended tip portion relative to the central axis of the paddle portion. In another example, a transducer head comprises a write pole circuit having a paddle portion with a central axis, and an extended tip portion with a central axis, the central axis of the extended tip portion angled from the central axis of the paddle portion. In another example, a magnetic circuit comprises a write pole circuit having a paddle portion and an extended tip portion, the extended tip portion bending away from a central axis of the paddle portion, and a coil wrapping around the extended tip portion.

Abstract: TAR enable write heads may use a plasmonic device (e.g., an optical transducer) which uses electromagnetic energy generated from a laser to heat the magnetic media. However, as the temperature of the plasmonic device rises, the likelihood of stressing the material of the device or other materials of the head near the plasmonic device increases. Accordingly, the write head may include a temperature sensor proximate to the plasmonic device. In one embodiment, the resistance of the temperature sensor may change according to the temperature of the plasmonic device. Based on the measured resistance of the temperature sensor, a sensing circuit may adjust the power of the laser, and thus, prevent the stressing of the materials. Moreover, the thermal coupling between the temperature sensor and a heat sink connected to the plasmonic device may be improved by moving elements associated with the sensing circuit closer to a heat sink.

Abstract: Provided is a magnetic head slider apparatus that can minimize a change in a roll angle caused by an impact force even with a submount mounted on a side surface thereof and achieve steady flying with the roll angle minimized. A dimple position and a pressure center position of a lifting force are moved in a slider width direction to thereby align a center of mass of a slider having a submount including a laser diode mounted on a side surface thereof, the dimple position, and the pressure center position of the lifting force with each other. This provides a magnetic head slider and a suspension thereof, and a magnetic disk drive apparatus offering higher recording density and higher reliability.

Abstract: A disk drive read head includes a slider. The slider has an air bearing surface, a trailing face, and a mounting face opposite the air bearing surface. The mounting face includes a mounting face recession. An interior surface of the mounting face recession includes an electrically conductive terminal. The read head also includes a magnetic transducer disposed on the trailing face of the slider. The read head also includes a laser device affixed to the electrically conductive terminal by a solder material. The laser device is at least partially recessed into the mounting face recession.

Abstract: A measurement method of a magnetic field gradient of a recording magnetic field generated by a magnetic head in a recording medium includes a step of locally heating the recording medium in a nonmagnetic field state where a magnetic field is not applied to the recording medium at all and measuring a temperature gradient of the recording medium in the nonmagnetic field state, a step of locally heating the recording medium in a recording magnetic field application state where the recording magnetic field is applied to the recording medium and measuring a temperature gradient of the recording medium in the recording magnetic field application state, and a step of calculating a magnetic field gradient of the recording magnetic field based on the temperature gradient of the recording medium in the nonmagnetic field state and the temperature gradient of the recording medium in the recording magnetic field application state.