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Assignee: Hitachi Global Storage Technologies Netherlands B.V.


Location: Amsterdam, NL
No. of applications: 577

1                      
Application No.Application TitleIssue Date
20120128871METHOD FOR PATTERNED MEDIA WITH REDUCED MAGNETIC TRENCH MATERIAL
A bit patterned magnetic media design for reducing the amount of magnetic material located in the trenches between topographic features is disclosed. An intermediate non-magnetic layer is deposited on the topography prior to depositing the functional magnetic layer on t...
05/24/2012
20120127839THERMALLY ASSISTED MAGNETIC WRITE HEAD EMPLOYING A PLASMONIC ANTENNA COMPRISING AN ALLOYED FILM TO IMPROVE THE HARDNESS AND MANUFACTURABILITY OF THE ANTENNA
A thermally assisted write head having a plasmonic heating device. The plasmonic heating device has a plasmonic antenna located at an air bearing surface of the thermally assisted write head. The plasmonic antenna is constructed of an alloy that is sufficiently hard to ...
05/24/2012
20120127609SYSTEM, METHOD AND APPARATUS FOR PERPENDICULAR MAGNETIC RECORDING MEDIA HAVING DECOUPLED CONTROL AND GRADED ANISOTROPY
A structure for high performance perpendicular magnetic recording media has a substrate with a plurality of sequential layers including an adhesion layer, a first soft underlayer (SUL), a coupling layer, a second SUL, a seed layer, a Ru layer, and an onset layer; at lea...
05/24/2012
20120107645METHOD FOR MANUFACTURING A SHORT FLARE DEFINITION BY ADDITIVE PROCESS FOR PERPENDICULAR HEAD
A method for manufacturing a magnetic write head for perpendicular magnetic recording. The method includes forming a write pole, and then depositing a refill layer. A mask structure can be formed over the writ pole and refill layer, the mask structure being configured t...
05/03/2012
20120105999INTEGRATED TOUCH-DOWN PAD AND TOUCH-DOWN SENSOR
In one general embodiment, a magnetic head includes a touch-down pad, comprising at least one shielding element positioned between a leading edge of a main magnetic pole and a trailing edge of a lower return pole; an embedded contact sensor (ECS) in an electrically isol...
05/03/2012
20120105996THERMALLY ASSISTED MAGNETIC WRITE HEAD EMPLOYING A NEAR FIELD TRANSDUCER (NFT) HAVING A DIFFUSION BARRIER LAYER BETWEEN THE NEAR FIELD TRANSDUCER AND A MAGNETIC LIP
A thermally assisted magnetic write head having a near-field transducer, a magnetic lip and a diffusion barrier layer between the near-field tranducer and the magnetic lip. The near-field transducer includes a transparent aperture constructed of a material such as SiO
05/03/2012
20120070784SYSTEM, METHOD AND APPARATUS FOR FABRICATING A C-APERTURE OR E-ANTENNA PLASMONIC NEAR FIELD SOURCE FOR THERMAL ASSISTED RECORDING APPLICATIONS
A method of fabricating a c-aperture or E-antenna plasmonic near field source for thermal assisted recording applications in hard disk drives is disclosed. A c-aperture or E-antenna is built for recording head applications. The technique employs e-beam lithography, part...
03/22/2012
20120069471CURRENT-PERPENDICULAR-TO-PLANE (CPP) READ SENSOR WITH FERROMAGNETIC BUFFER, SHIELDING AND SEED LAYERS
A current-perpendicular-to-plane (CPP) tunneling magnetoresistance (TMR) or giant magnetoresistance (GMR) read sensor with ferromagnetic buffer, shielding and seed layers is proposed for high-resolution magnetic recording. The ferromagnetic buffer layer is preferably fo...
03/22/2012
20120050919CURRENT PERPENDICULAR MAGNETORESISTIVE SENSOR WITH CAPACITANCE BALANCING
A perpendicular magnetic read head having a balanced capacitive coupling with the substrate. The read head includes a magnetoresistive sensor with first and second magnetic, electrically conductive shields separated from a substrate by a layer of non-magnetic, electrica...
03/01/2012
20120050915METHOD FOR MANUFACTURING A PERPENDICULAR MAGNETIC WRITE HEAD HAVING A LEADING EDGE TAPERED WRITE POLE, SELF ALIGNED SIDE SHIELD AND INDEPENDENT TRAILING SHIELD
A method for manufacturing a magnetic write head having a tapered write pole as well as a leading edge taper, and independent trailing and side magnetic shields. The method allows the write pole to be constructed by a dry process wherein the write pole material is eithe...
03/01/2012
20120044595PERPENDICULAR MAGNETIC RECORDING MEDIUM (PMRM) AND MAGNETIC STORAGE SYSTEMS USING THE SAME
In one embodiment, a perpendicular magnetic recording medium (PMRM) includes a first interlayer comprising Ru or a Ru alloy, a second interlayer above the first interlayer comprising Ru or a Ru alloy, and a third interlayer formed between the first interlayer and the se...
02/23/2012
20110281780LUBRICANT SUITABLE FOR USE WITH MAGNETIC DISK
A lubricant according to one embodiment includes a first ingredient and a second ingredient, said first ingredient as the main constituent being a first perfluoropolyether compound represented by the formula (1) which has a weight-average molecular weight of 500 to 6000...
11/17/2011
20120016499IMPLEMENTING SEQUENTIAL SEGMENTED INTERLEAVING ALGORITHM FOR ENHANCED PROCESS CONTROL
A method and apparatus are provided for implementing Advanced Process Control (APC) for enhanced electrical, magnetic, or physical properties process output control using a sequential segmented interleaving algorithm. The sequential segmented interleaving algorithm incl...
01/19/2012
20120012554SYSTEM AND METHOD OF FABRICATING MEDIA
A method of fabricating media comprises forming recording media on a substrate. An overcoat is deposited on the recording media opposite the substrate. The overcoat has a first surface finish. The overcoat is etched to remove material and provide the overcoat with a sec...
01/19/2012
20120008233Extended Cavity VCSEL Mounted to Substrate with Electrical and Thermal Contact to Substrate and Optical Power Directed Toward Substrate
A system according to one embodiment includes a slider adapted for use in a hard disk drive; and a laser coupled to a slider, wherein electrical contacts of the laser are positioned towards or face the slider, wherein light from the laser is emitted towards the slider, ...
01/12/2012
20110287698SYSTEM, METHOD AND APPARATUS FOR ELASTOMER PAD FOR FABRICATING MAGNETIC RECORDING DISKS
A pad for polishing media disks has an elastomeric body with a Shore A hardness of not greater than 20, and a coating of polystyrene (PS) and a flexible polymer. The elastomeric pad may comprise styrene-isoprene-styrene block copolymers, or a styrene-ethylene-butylene-s...
11/24/2011
20110256424PERFLUOROPOLYETHER LUBRICANT AND SYSTEMS COMPRISING SAME
A surface agent includes two end portions and a middle portion disposed between the end portions. The end portions include a terminal section and a midsection. The terminal section includes at least one surface active functional group. The midsection includes at least o...
10/20/2011
20110154060IMPLEMENTING SECURE ERASE FOR SOLID STATE DRIVES
A method and apparatus are provided for implementing secure erase for solid state drives (SSDs). An encryption key is used to encrypt data being written to SSD. A controller identifies a key storage option, and responsive to the identified key storage option, stores a k...
06/23/2011
20110153959IMPLEMENTING DATA STORAGE AND DUAL PORT, DUAL-ELEMENT STORAGE DEVICE
A method for implementing data storage and a dual port, dual element storage device are provided. A storage device includes a predefined form factor including a first port and a second port, and a first storage element and a second storage element. A controller coupled ...
06/23/2011
20110151360PHOTOLITHOGRAPHIC METHOD AND MASK DEVICES UTILIZED FOR MULTIPLE EXPOSURES IN THE FIELD OF A FEATURE
A photolithographic mask set for creating a plurality of characters on a device includes a plurality of photolithographic masks, wherein each mask includes at least one mask character area and at least one mask character field area that surrounds said mask character are...
06/23/2011
20110151144PERPENDICULAR MAGNETIC RECORDING MEDIUM, MANUFACTURING PROCESS OF THE SAME, AND MAGNETIC RECORDING/REPRODUCING APPARATUS USING THE SAME
Embodiments of the invention provide a perpendicular magnetic recording medium improved for fly ability, high in read signal quality, and capable of suppressing magnetic decay of recorded magnetization to be caused by stray fields. In one embodiment, a perpendicular rec...
06/23/2011
20110149429FLOATING HEAD DEVICE FOR FLOATING A HEAD ON A MAGNETIC DISK AND METHODS OF MANUFACTURING A MAGNETIC DISK
In one embodiment, a method of manufacturing a magnetic disk includes rotating a magnetic disk, supporting a floating head on the rotating magnetic disk, the floating head having a slider body and an element unit formed on a trailing edge of the slider body, contacting ...
06/23/2011
20110141616MAGNETIC RECORDING HEAD AND MAGNETIC DISK STORAGE DEVICE
In one embodiment, a magnetic recording head includes a main magnetic pole adapted for generating a magnetic field for recording information on a magnetic disk, a magnetic shield member adapted for suppressing spreading of a magnetic field output from the main magnetic ...
06/16/2011
20110141606TUNNELING JUNCTION MAGNETORESISTIVE EFFECT ELEMENT AND MANUFACTURING METHOD THEREOF
According to one embodiment, a TMR effect element includes a ground layer, an antiferromagnetic layer above the ground layer, a first ferromagnetic layer above the antiferromagnetic layer and exchange-coupled to the antiferromagnetic layer, an anti-parallel coupling lay...
06/16/2011
20110134564MAGNETIC HEADS HAVING A GRADED DOMAIN CONTROL FILM AND METHODS OF MANUFACTURE THEREOF
A magnetic head, according to one embodiment, includes a sensor film, a sensor cap film provided above the sensor film, a pair of shields including an upper magnetic shield and a lower magnetic shield which serve as electrodes that pass current in a film thickness direc...
06/09/2011
20110134559METHODS FOR PRODUCING AND/OR TESTING MAGNETIC HEADS USING CLASSIFICATIONS
In one embodiment, a manufacturing method for magnetic heads includes classifying magnetic heads into one of a first tested head class, and a non-test-candidate head class, determining characteristic values of the magnetic heads classified in the first tested head class...
06/09/2011
20110128649MAGNETIC RECORDING MEDIUM HAVING NON-MAGNETIC SEPARATING REGIONS AND METHODS OF MANUFACTURING THE SAME
In one embodiment, a magnetic recording medium includes a patterned magnetic recording layer above a substrate, the patterned magnetic recording layer including recording regions and separating regions for separating the recording regions and a non-magnetic alloy layer ...
06/02/2011
20110122525MAGNETIC RECORDING MEDIUM USING LAYERS HAVING HIGHER- AND LOWER-HK ANISOTROPIC MAGNETIC FIELDS
According to one embodiment, a magnetic recording medium includes a magnetic recording layer formed above a substrate, comprising: a first magnetic layer formed from a [Co/Pt]n multilayered film, wherein the first magnetic layer has a face-centered cubic (fcc...
05/26/2011
20110119498IMPLEMENTING DATA CONFIDENTIALITY AND INTEGRITY OF SHINGLED WRITTEN DATA
A method, apparatus and a data storage device are provided for implementing data confidentiality and integrity of data stored in overlapping, shingled data tracks on a recordable surface of a storage device. A unique write counter is stored for each zone written to the ...
05/19/2011
20110102940SYSTEM, METHOD AND APPARATUS FOR PLANARIZING SURFACES WITH FUNCTIONALIZED POLYMERS
The surfaces of hard disk drive magnetic media disks are planarized with surface-grafted polymer chains that form a monolayer-thick film of uniform, self-limiting thickness. The thickness is controlled by the molecular weight of the polymer selected. The polymer film ma...
05/05/2011
20110102936PERPENDICULAR MAGNETIC RECORDING HEAD AND METHOD FOR PRODUCING THE SAME
According to one embodiment, a perpendicular magnetic recording head includes a main pole, wherein a thickness in a down-track direction of the main pole increases moving away from an air bearing surface of the magnetic pole, and wherein a center position in a thickness...
05/05/2011
20110086440METHOD FOR MANUFACTURING AN EXTRAORDINARY MAGNETORESISTIVE (EMR) DEVICE WITH NOVEL LEAD STRUCTURE
A method for manufacturing an extraordinary magnetoresistive sensor (EMR sensor) having reduced size and increased resolution is described. The sensor includes a plurality of electrically conductive leads contacting a magnetically active layer and also includes an elect...
04/14/2011
20110085261MAGNETORESISTIVE MAGNETIC HEAD HAVING A NON-MAGNETIC PART ON A MEDIUM FACING SURFACE SIDE OF THE SENSOR
According to one embodiment, a magnetic head includes an upper magnetic shield, a lower magnetic shield,a magnetoresistive element having a magnetization-free layer formed therein formed between the shields, an upper magnetic shield restricting part formed on a medium f...
04/14/2011
20110075286SYSTEM, METHOD AND APPARATUS FOR DETERMINING TRACK PITCH IN A HARD DISK DRIVE TO SATISFY THE REQUIREMENTS OF BOTH OFF-TRACK CAPACITY AND ADJACENT TRACK ERASURE
Track pitch in a hard disk drive is selected to satisfy the requirements of both off-track capacity (OTC) and adjacent track interference (ATI). The invention separately measures the track pitch requirements for OTC and ATI. The track pitch for the drive is set with the...
03/31/2011
20110074062SYSTEM, METHOD AND APPARATUS FOR MANUFACTURING MAGNETIC RECORDING MEDIA
A system, method and apparatus for manufacturing high density magnetic media is disclosed. A flexible mold having a very low modulus of less than about 4 GPa is made on a rigid support. The mold nano-imprints a resist material on disks for hard disk drives. The f...
03/31/2011
20110038079PERPENDICULAR RECORDING MEDIA WITH SUBLAYERS OF OXIDE DOPANT MAGNETIC MATERIALS
Perpendicular recording media with sublayers of dual oxide dopant magnetic materials are disclosed. The magnetic layer may comprise multiple sublayers of magnetic materials. In each sublayer, dual oxide dopants are incorporated. The compositions of the sublayers can be ...
02/17/2011
20110035634STORAGE DEVICE WITH ADAPTIVE ERROR-CORRECTING CODE FOR IMPROVED AREAL EFFICIENCY
A method for adaptively applying an error-correcting code to a storage device is disclosed. A determination is made that a system is in an idle state of input/output requests. First data symbols are copied into a first location within a buffer. First data symbol errors ...
02/10/2011
20110032640MULTI-LAYER, THIN FILM OVERCOAT FOR MAGNETIC MEDIA DISK
A thin film magnetic disk overcoat for perpendicular magnetic recording media comprises three layers. The initial layer comprises a dense mixture of both SiCx and SiNy compounds. The intermediate layer is a relatively dense high energy carbon proce...
02/10/2011
20110032638PERPENDICULAR MAGNETIC RECORDING MEDIUM, MANUFACTURING PROCESS OF THE SAME, AND MAGNETIC RECORDING/REPRODUCING APPARATUS USING THE SAME
Embodiments of the invention provide a perpendicular magnetic recording medium improved for fly ability, high in read signal quality, and capable of suppressing magnetic decay of recorded magnetization to be caused by stray fields. In one embodiment, a perpendicular rec...
02/10/2011
20110026165SYSTEM AND APPARATUS FOR VIBRATION DAMPING OF INTEGRATED LEAD SUSPENSIONS IN HIGH DENSITY MAGNETIC STORAGE DEVICES
An integrated lead suspension (ILS) has a constrained layer damper (CLD) that attenuates vibration of the ILS. The CLD may be applied over an already assembled ILS such that the CLD is applied to the cover layer, to the base layer, or to both. Alternatively, the ILS may...
02/03/2011
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