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8184395 |
Magnetic recording and reproducing apparatus with thin-film magnetic head having microwave magnetic exciting function
A magnetic recording and reproducing apparatus includes a metal housing, a magnetic recording medium having a magnetic recording layer, and a thin-film magnetic head having a write magnetic field...
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8184406 |
Thin film magnetic head having an angled insulating film
Embodiments in accordance with the present invention provide a thin film magnetic head for preventing a short-circuit failure during formation of a track portion or a stripe-height portion and...
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8179642 |
Magnetoresistive effect element in CPP structure and magnetic disk device
An MR element in a CPP structure includes an MR part configured with a nonmagnetic layer, a first ferromagnetic layer that functions as first free layer and a second ferromagnetic layer that...
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8149537 |
Magnetic writer with multi-component shield
A writer comprises a main pole, a write gap and a write shield. The main pole has a main pole tip for emitting magnetic flux. The write gap is adjacent the main pole tip along a center axis of the...
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8136226 |
Read sensors and methods of making same with back-edge milling and refilling
Methods and apparatus provide a refill configuration adjacent a back-edge that defines a height of a magnetoresistive read sensor. Milling through layers of the sensor forms the back-edge and may...
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8130473 |
Multi-channel thin-film magnetic head and magnetic tape drive apparatus with the multi-channel thin-film magnetic head
A multi-channel thin-film magnetic head includes a substrate, a plurality of MR read head elements, a plurality of first resistive elements, and a second resistive element. Each MR read head...
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8125743 |
Thin-film magnetic head, magnetic head assembly, magnetic disk drive apparatus and method for manufacturing thin-film magnetic head
A thin-film magnetic head has a magnetoresistive effect read head element. The magnetoresistive effect read head element includes a lower shield layer, an upper shield layer, and a magnetoresistive...
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8105705 |
External field robustness of read/write head shields
An improved magnetic shield for a perpendicular magnetic write head is disclosed. Its main feature is a pair of tabs at the shield's bottom corners. Said tabs are significantly wider at their point...
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8098463 |
Current perpendicular to plane magnetoresistance read head design using a current confinement structure proximal to an air bearing surface
A current to perpendicular to plane (CPP) magnetoresistance (MR) read head using current confinement proximal to an air bearing surface (ABS) is disclosed. A CPP MR read head includes a first...
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8094419 |
Optimized write pole flare angle for side shield or semi side shield PMR writer application
Improved writability and a reduction in adjacent track erasure are achieved in a PMR writer with a large flare angle of 45 and 90 degrees in the main write pole and a full side shield or partial...
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8089295 |
Wafer level balanced capacitance design for magnetic heads
Embodiments of the invention provide methods, systems and apparatus for testing electronic components, and more specifically for testing magnetoresistive heads. A pair of top shield pads and a pair...
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8089734 |
Magnetoresistive element having a pair of side shields
An MR element includes an MR stack disposed between first and second main shield portions, and a pair of side shields disposed on opposite sides of the MR stack in the track width direction. The...
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8077435 |
Current perpendicular-to-plane read sensor with back shield
Disclosed is a read head for reading data from a magnetic media. The read head includes a bottom magnetic shield layer, a top magnetic shield layer, and a read sensor disposed between the bottom...
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8072710 |
Thin-film magnetic head that locally projects an element part toward a recording medium by thermal expansion
A thin-film magnetic head comprises a reproducing element formed on an undercoat film on a head substrate surface, a recording element formed on the upper side of the reproducing element, and a...
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8065787 |
Method of manufacturing a thermally assisted magnetic head
A thermally assisted magnetic head is formed by performing a head forming process, a mounting part forming process and a light source mounting process in that order. In the head forming process, a...
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8066893 |
Method for creating a magnetic write pole having a stepped perpendicular pole via CMP-assisted liftoff
A method for manufacturing a magnetic write head having a stepped, recessed, high magnetic moment pole connected with a write pole. The stepped pole structure helps to channel magnetic flux to the...
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8059371 |
Method to reduce sensitivity of a magnetic read-write head to external magnetic fields
In a read-write head, the shields can serve as magnetic flux conductors for external fields, so that they direct a certain amount of flux into the recording medium. This problem has been overcome...
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8059370 |
Reader shield/electrode structure
A magnetic sensing device includes a first electrode, a second electrode, a first magnetic shield, a second magnetic shield, and a sensor. The first magnetic shield forms at least a portion of the...
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8054586 |
Write head design and method for reducing adjacent track interference at very narrow track widths
A perpendicular write head having a wrap around trailing shield for reducing stray field writing and adjacent track interference. A method for constructing such a write head allows for excellent...
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8049997 |
Magnetoresistive element including a pair of free layers coupled to a pair of shield layers
A first shield portion located below an MR stack includes a first main shield layer, a first antiferromagnetic layer, and a first magnetization controlling layer including a first ferromagnetic...
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8040632 |
Grounding structure of TMR and GMR heads with a flying on-demand heater
A head for a hard disk drive. The head includes a substrate, a write element, a read element and a heater element. The head also includes a buffer layer between the read element and the substrate,...
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8040633 |
Magnetic head and magnetic recording-reproducing apparatus
A magnetic recording-reproducing apparatus includes: a magnetic recording medium in which portions corresponding to track portions serve as recording areas and in which portions between the...
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8035930 |
Perpendicular magnetic recording write head with a side shield
A side shield structure for a PMR write head is disclosed that narrows write width and minimizes adjacent track and far track erasure. The side shield structure on each side of the write pole has...
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8023231 |
Composite shield structure of PMR writer for high track density
Improved writability and a substantial reduction in adjacent track erasure are achieved by incorporating a composite shield structure in a PMR writer. There is a trailing shield formed a certain...
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8014108 |
Magnetoresistive device of the CPP type, utilizing insulating layers interposed in shield layers to form a closed magnetic path usable in a disk system
The invention provides a magnetoresistive device of the CPP (current perpendicular to plane) structure, comprising a magnetoresistive unit, and a first shield layer and a second shield layer which...
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8009391 |
Magnetic sensing element and method for manufacturing the same
An underlying layer is composed of Co—Fe—B that is an amorphous magnetic material. Thus, the upper surface of the underlying layer can be taken as a lower shield layer-side reference position for...
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8000064 |
Thin-film magnetic head for perpendicular magnetic recording and method of making the same
A perpendicular recording thin-film magnetic head comprises a main magnetic pole having a tip main magnetic pole part extending in a height direction from a medium-opposing surface and a base main...
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8000063 |
Magneto-resistive element, thin film magnetic head, magnetic head device, and magnetic recording/reproducing apparatus
A magneto-resistive element includes a lower magnetic shield film and a magneto-resistive film disposed above the lower magnetic shield film. The lower magnetic shield film includes a lower shield...
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7995311 |
Magnetic shield, manufacturing method thereof and thin film magnetic head employing the same
Embodiments of the present invention provide a magnetic shield composed of size-controlled small crystal grains and provide a more after-write read noise free thin film magnetic head. According to...
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7990659 |
Magnetic head with protective films
A magnetic head according to one embodiment includes a substrate; a sensor formed above the substrate; a second shield formed above the sensor and the substrate; a first insulation layer positioned...
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7983009 |
Magnetic recording/reproducing system, and thin-film magnetic head having shield layers of specified widths
The invention provides a magnetic recording/reproducing system constructed such that until the skew angle is past the maximum skew angle αmax, the edges of the write shield layer and the edges of ...
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7983010 |
Perpendicular magnetic recording head and perpendicular magnetic recording/reproducing head with at least one shield layer having a substantially arched portion
A perpendicular magnetic recording head according to the present invention is composed of a first magnetic layer having a main magnetic pole exposed at a facing surface opposite a recording medium,...
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7978438 |
Thin-film magnetic head with shield layer profile having obtuse or rounded corners, magnetic head assembly, magnetic disk drive apparatus and manufacturing method of thin-film magnetic head
A thin-film magnetic head provided with at least one MR read head element includes a lower shield layer, an upper shield layer, and an MR layer formed between the lower shield layer and the upper...
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7974048 |
Magneto-resistive effect device of CPP type having shield layers coupled with ferromagnetic layers
The invention provides a magneto-resistive effect device of the CPP (current perpendicular to plane) structure, having a magneto-resistive effect unit, and a first shield layer and a second shield...
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7961438 |
Magnetoresistive device of the CPP type, and magnetic disk system
The invention provides a magnetoresistive device of the CPP (current perpendicular to plane) structure, comprising a magnetoresistive unit, and a first shield layer and a second shield layer which...
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7961437 |
Magnetic recording head having an extended stripe height and a shortened shield height
Magnetic recording heads and associated methods of fabrication are disclosed. A magnetic recording head has a first shield and a magnetoresistance (MR) read element formed on the first shield. The...
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7957105 |
Shield in a magnetic device with reduced erase field
A shield in a magnetic reader includes a magnetic layer having a first surface and a second surface. The magnetic layer includes at least one aperture that extends through the magnetic layer from...
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7952838 |
Read head for magnetic storage system
A read head for a rotating magnetic storage system including concentric tracks is disclosed. The read head comprises a magnetoresistive (MR) sensor that reads information from a read track of the...
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7948716 |
Magnetic head for perpendicular magnetic recording with a shield and a pole layer having a top surface with first and second portions at different heights, and method of manufacturing same
A magnetic head includes: a coil; a pole layer; a shield having an end face located in a medium facing surface forward of an end face of the pole layer along a direction of travel of a recording...
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7933095 |
Magnetic head for perpendicular magnetic recording including a stopper layer for suppressing protrusion of the front end face of a shield
A magnetic head includes a pole layer and a shield. The shield includes a shield layer having a front end face located in the medium facing surface at a position forward of an end face of the pole...
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7914916 |
Thermally stable high anisotropic high magnetic moment films
High magnetic moment films FeCo(X, Y), where X is a transition metal element and Y is a rare earth element are formed using off-axis static deposition techniques. The films have tunable magnetic...
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7916429 |
Magnetic field detecting element having thin stack with a plurality of free layers and thick bias magnetic layer
A magnetic field detecting element comprising: a stack including an upper and magnetic layer, a lower magnetic layer, and a non-magnetic intermediate layer sandwiched therebetween, an upper and...
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7916430 |
Thin-film magnetic head and manufacturing method thereof
A thin-film magnetic head includes a lower magnetic shield layer, an MR multi-layered structure formed on the lower magnetic shield layer so that current flows in a direction perpendicular to...
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7903371 |
Perpendicular magnetic recording head and perpendicular magnetic recording/reproducing head having a magnetic shield layer with a thick edge portion
A perpendicular magnetic recording head includes a first magnetic layer having a main magnetic pole exposed at a medium-facing surface that faces a recording medium; a second magnetic layer that...
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7898773 |
Perpendicular magnetic recording head with a side write shield
A perpendicular magnetic recording (PMR) head is fabricated with a pole tip shielded laterally by a separated pair of side shields and shielded from above by an upper shield. The side shields are...
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7881019 |
Two step corner recess for secondary stray field reduction in a perpendicular magnetic recording head
A magnetic structure for use in a magnetic head for avoiding stray field writing. The magnetic structure can be for example a magnetic shield or could be a magnetic pole of a write head and is...
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7876535 |
Magnetoresistive device of the CPP type, and magnetic disk system
A magnetoresistive device of a CPP (current perpendicular to plane) structure includes a magnetoresistive unit sandwiched between a first substantially soft magnetic shield layer from below, and a...
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7876534 |
Magneto-resistive effect device of the CPP type, and magnetic disk system
A magnetoresistive device comprising a magnetoresistive unit, an upper shield layer and a lower shield layer stacked such that the magnetoresistive unit is held between them. The magnetoresistive...
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7874062 |
Methods for defining the track width of magnetic head having a flat sensor profile
A method of making a magnetic head according to one embodiment comprises forming a shield layer having first and second recesses in first and second end regions which surround a central region;...
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7872836 |
Disk drive device
In a disk drive device in which low-density gas is sealed, embodiments of the present invention help to improve joint reliability at a solder joint section between a feedthrough and an enclosure...
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