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7633712 |
Method to print photoresist lines with negative sidewalls
A write pole for vertical magnetic recording is described. It includes a trapezoidal prism of high magnetic moment material, having inwardly sloping sidewalls. Its parallel surfaces are between...
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7631417 |
Use of anti-reflective seed layers for the fabrication of perpendicular thin film heads
Methods and structures for the fabrication of perpendicular thin film heads are disclosed. Prior to the deposition of shield structures, seed layers having anti-reflective properties are utilized,...
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7616403 |
Winged design for reducing corner stray magnetic fields
Embodiments of the present invention are directed to structures of a recording head having a winged design for reducing corner stray magnetic fields. In one embodiment, the present invention...
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7610674 |
Method to form a current confining path of a CPP GMR device
Concerns about inadequate electromigration robustness in CCP CPP GMR devices have been overcome by adding magnesium to the current confining structures that are presently in use. In one embodiment...
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7610673 |
Method of manufacturing a vertical recording magnetic head
A vertical recording magnetic head and a method of manufacturing the same is provided. The magnetic head includes a main magnetic pole layer on a surface opposite to a recording medium and a pair...
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7610672 |
Method of reworking disk drive
There is provided a disk drive that includes a base, a limiting member, an actuator, and a latch. The actuator includes an actuator catch with a catch path. The latch contacts the limiting member...
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7609488 |
Fly height actuator/void region in basecoat
A transducing device responsive to magnetic fields includes a writer, a reader, an actuator, and a void. The actuator is positioned proximate the writer and reader. The void is positioned between...
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7587811 |
Method for manufacturing a magnetic write head for perpendicular magnetic data recording
A method for manufacturing a magnetic write head for perpendicular magnetic recording having a write pole with a very narrow track width and well controlled critical dimensions. The write pole is...
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7587810 |
High milling resistance write pole fabrication method for perpendicular recording
A mask structure for fabricating a write pole for a perpendicular write head. The mask structure includes a first and second hard mask structures separated by an image transfer layer, such as...
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7578049 |
Method for constructing a magnetic write pole for a perpendicular magnetic recording head
A method for manufacturing a write pole for a perpendicular magnetic write head. The method includes forming a mask structure over a full film layer of magnetic write pole material. A layer of hard...
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7570457 |
Tape recording head with trench defining wear zone for constant rate of head wear
A magnetic recording head is provided comprising a flat contour head having a deposited closure. An ion-milled trench or recess is provided near the substrate edge to create a lip or wear zone...
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7563381 |
High milling resistance write pole fabrication method for perpendicular recording
A method for constructing a tapered write pole, the method including the use of a bilayer hard mask.
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7562437 |
Method of manufacturing a wrap around shield for a perpendicular write pole using a laminated mask
A method for constructing a magnetic write head for use in perpendicular magnetic recording, the write head having a write pole with a trailing shield that wraps around the write pole. The method...
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7552523 |
Method for manufacturing a perpendicular magnetic recording transducer
A method and system for manufacturing a perpendicular magnetic recording transducer by a process that includes plating is described. The method and system include forming a chemical mechanical...
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7545603 |
Magnetic head and manufacturing method thereof
A magnetic head and a manufacturing method thereof which can suppress side fringing and permeation of a recording magnetic field in the first direction while maintaining the intensity of a...
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7545602 |
Use of grating structures to control asymmetry in a magnetic sensor
The present invention provides apparatus and method for controlling the asymmetrical properties of the response of a magnetic sensor element to a magnetic field produced by the digital data in a...
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7536773 |
Method of configuring a sensor for a hard disk drive
A nano-sized CPP aperture is precisely positioned to within a few nanometers of a slider ABS surface to maximize a signal from the disk and to prevent lapping damage to the aperture itself. A...
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7536776 |
Fabrication method for thin film magnetic heads
A fabrication method for thin film magnetic heads, comprises, forming a Current Perpendicular to a Plane (CPP) sensor film over a lower shield and a first chemical mechanical polishing (CMP) stop...
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7536777 |
Use of metal capped seed layers for the fabrication of perpendicular thin film heads
Methods and structures for the fabrication of perpendicular thin film heads are disclosed. Prior to the deposition of shield structures, capped seed layers having a dual layer structure are...
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7536775 |
Method for sample preparation for exposing a main pole of a recording head
A method for sample preparation. The method includes mechanically polishing portions of an insulating layer over a main pole of a recording head embedded within a sample structure. The insulating...
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7536778 |
Method of fabrication for slider with underpass leads
A method of fabrication is disclosed for a slider having sites for fabrication of a continuous coil having a set of front coils and a set of back coils and a center tab, where the slider includes...
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7530159 |
Method of distortion correction in shrink processes for fabrication of write poles
A method is presented for fabricating a write pole for a magnetic recording head, wherein a photoresist layer is formed on a wafer stack. A target P 2 pole configuration is provided, and a...
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7523543 |
Methods of forming magnetic memory devices including ferromagnetic spacers
A magnetic memory device may include a digit line on a substrate, a first insulating layer on the digit line, and a magnetic tunnel junction memory cell on the first insulating layer so that the...
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7523550 |
Process to open connection vias on a planarized surface
A method for forming a via in an alumina protective layer on a structure such as a magnetic write head for use in perpendicular magnetic recording. A structure such as a magnetic pole, and or...
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7525761 |
Method of making a multi-channel time based servo tape media
A thin film magnetic recording head is fabricated by forming a substrate from opposing ferrite blocks which have a ceramic member bonded between them. This structure is then diced to form a...
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7520048 |
Method of fabricating a GMR head
A giant magnetoresistive (GMR) head is formed to include a recess in an overcoat layer that reduces stress on the poles. The process includes depositing a seed layer over the overcoat layer prior...
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7509729 |
Method for making a perpendicular magnetic recording write head
A method for making a write pole in a perpendicular magnetic recording write head uses a metal mask to pattern the primary resist and only ion milling during the subsequent patterning steps. A...
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7506431 |
Method of manufacturing a perpendicular magnetic write head having a wrap-around trailing shield and a concave trailing edge main pole
A method for manufacturing a magnetic write head for perpendicular magnetic recording. The method allows the write head to be formed with a write pole having a concave trailing edge. The method...
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7506432 |
Method of manufacturing thin-film magnetic head
A lower shield layer is formed by being embedded in a first recess formed in an under layer. Accordingly, the distance between the lower shield layer and a slider can be reduced. Also, a second...
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7506430 |
Process to manufacture narrow track CPP head with bias cancellation
The problem of increased edge sensitivity associated with the reduction of the spacing between bias magnets in a CPP head has been solved by limiting the width of the bias cancellation layer and by...
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7508624 |
Transducers for perpendicular recording with write pole tip angled toward media
A write pole tip for a magnetic head has a trailing edge that is closer than a leading edge to a perpendicular recording medium, so that the write signal strength of the trailing edge is greater...
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7506428 |
Ion mill process with sacrificial mask layer to fabricate pole tip for perpendicular recording
A method of fabrication of the write head of a perpendicular recording head allows for production of P 3 pole tips of width less than 200 nm (200×10 −9 meters). The method includes fabricating...
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7503107 |
Method for manufacturing a magnetic head using a multi-stage ion milling
A method for manufacturing a magnetic head for perpendicular magnetic recording is disclosed. The method comprising: a first step of depositing a non-magnetic film over and around the main magnetic...
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7500302 |
Process for fabricating a magnetic recording head with a laminated write gap
Embodiments of the present invention recite a process for fabricating a write gap structure for a magnetic recording head. In one embodiment, at least one layer of inert material is deposited which...
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7497006 |
Method for releasably mounting a head slider to a disk drive head suspension
A method for mounting a head slider of the type having terminal pads to a wireless disk drive head suspension flexure including a slider mounting region, lead contact pads, and a deflectable and...
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7497009 |
Main pole forming method of perpendicular magnetic recording head
A main pole forming method is provided. The main pole forming method includes etching an exposed side face of a main pole layer, and the plated foundation film, thereby defining a recording track...
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7493688 |
Method of manufacturing a magnetic recording transducer
A method for providing a magnetic recording transducer is disclosed. The method includes providing a first pole having front and rear portions and a back gap on the rear portion. The method also...
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7486479 |
Magnetic head assembly with at least one guide block set back from sliding surface of servo signal recording head
A magnetic head assembly to record servo signals, that serves for positioning of data recording magnetic heads and data reproducing magnetic heads, on magnetic tapes includes a servo signal...
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7475470 |
Method for manufacturing a magnetic head for perpendicular recording
On the trailing side of a main pole air bearing surface of a magnetic head for perpendicular recording, the central portion is formed closer to the leading side than the corners on the trailing...
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7477482 |
Magnetic recording head
A filled-gap magnetic recording head is provided comprising a flat or cylindrical contour head having a row of magnetic transducers in a gap region disposed between a rowbar substrate and a...
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7472470 |
Method of manufacturing a perpendicular magnetic recording head
A main magnetic pore layer is formed on an insulating layer flattened into a high-flatness surface, and a yoke layer having a large film thickness is formed under the main magnetic pole layer...
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7469468 |
Methods of slider-level reader isolation measurement technique for advanced GMR heads
A read/write head for a disk drive having a shorting conductor from a shield of the read element to a conductor that runs from the write element to an external electrical contact pad. This allows...
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7469465 |
Method of providing a low-stress sensor configuration for a lithography-defined read sensor
One illustrative method of fabricating a read sensor of a magnetic head includes the steps of forming a plurality of read sensor layers on a wafer; etching the read sensor layers to form a read...
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7469467 |
Method of manufacturing a perpendicular write head
A perpendicular write head includes a main pole comprising a Durimide/Alumina hard mask formed over a laminate layer process to form the main pole without using a liftoff or chemical mechanical...
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7467461 |
Additive gap process to define trailing and side shield gap for a perpendicular write head
A method of manufacturing a magnetic write head for perpendicular magnetic recording. The method includes the formation of a write pole over a substrate. A non-magnetic side gap layer is deposited...
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7464456 |
Slider separating method
A slider separating method includes bonding a row bar containing a plurality of slider-forming portions to a bonding surface of a cutting fixture along a side surface that extends in its length...
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7464457 |
Method for forming a write head having an air bearing surface (ABS)
Methods for forming write heads. One method includes forming a mask layer above a pole tip layer; forming a layer of resist above the mask layer; patterning the resist; removing portions of the...
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7464458 |
Method for manufacturing a self-aligned, notched trailing shield for perpendicular recording
A perpendicular magnetic write head having a notched, self aligned trailing shield for canting a magnetic field emitted therefrom.
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7454828 |
Method for manufacturing a magnetic write head
A method for measuring recession in a wafer undergoing an asymmetrical ion mill process. The method includes the formation of first and second reference features and possibly a dummy feature. The...
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7444740 |
Damascene process for fabricating poles in recording heads
A method and system for manufacturing a pole for a magnetic recording head. The method and system include providing an insulator and fabricating at least one hard mask on the insulator. The at...
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