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7389577 |
Method to fabricate an ESD resistant tunneling magnetoresistive read transducer
A method to fabricate a tunneling magnetoresistive (TMR) read transducer is disclosed. An insulative layer is deposited on a wafer substrate, and a bottom lead is deposited over the insulative...
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7386933 |
Method of fabricating thin film write heads with a shortened yoke and improved dimension control
A method for fabricating a magnetic recording head writer. The writer includes a bottom magnetic pole and a write gap formed over the bottom pole and a coil trench formed in the bottom pole. A top...
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7383626 |
Methods for fabricating giant magnetoresistive (GMR) devices
In a method of fabricating a giant magnetoresistive (GMR) device a plurality of magnetoresistive device layers is deposited on a first silicon nitride layer formed on a silicon oxide layer. An etch...
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7377026 |
Method of making current-perpendicular-to-the-plane structure magnetoresistive element
A magnetoresistive film is formed on the surface of a lower electrode layer in a method of making a current-perpendicular-to-the-plane structure magnetoresistive element. The magnetoresistive film...
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7377025 |
Method of forming an improved AP1 layer for a TMR device
A TMR read head with improved voltage breakdown is formed by laying down the AP1 layer as two or more layers. Each AP1 sub-layer is exposed to a low energy plasma for a short time before the next...
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7377024 |
Method of making a magnetic write head with trailing shield throat pad
A method of fabricating a magnetic transducer is described which uses a trailing shield throat pad to set the trailing shield throat height. The trailing shield throat pad is used as a part of the...
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7370405 |
Fabrication method of a high gradient-field recording head for perpendicular magnetic recording
A thin film magnetic head for perpendicular recording of a single-pole type has a flux enhanced part and a flux enhanced end arranged on a leading side of the main pole in parallel with the cross...
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7370404 |
Method for resetting pinned layer magnetization in a magnetoresistive sensor
A spin valve sensor in a read head has a spacer layer which is located between a self-pinned AP pinned layer structure and a free layer structure. The free layer structure is longitudinally...
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7367112 |
Method of fabricating a head for perpendicular magnetic recording with a self-aligning side shield structure
A method is provided for fabricating a head for perpendicular recording with self-aligning side shields. The voids where the side shields will be formed are milled into the layer of material for...
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7367111 |
Method for producing a spin valve transistor with stabilization
A method and structure for a spin valve transistor (SVT) comprises a magnetic field sensor, an insulating layer adjacent the magnetic field sensor, a bias layer adjacent the insulating layer, a...
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7367110 |
Method of fabricating a read head having shaped read sensor-biasing layer junctions using partial milling
A method for fabricating a read head for a magnetic disk drive having a read head sensor and a hard bias layer, where the read head has a shaped junction between the read head sensor and the hard...
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7363700 |
Method of manufacturing a thin film magnetic head
The present invention provides a thin film magnetic head achieving improved recording performance by sharpening recording magnetic field gradient as much as possible. The thin film magnetic head...
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7363699 |
Method for manufacturing a magnetic read sensor employing oblique etched underlayers for inducing uniaxial magnetic anisotropy in hard magnetic bias layers
A magnetoresistive sensor having a hard bias layer with an engineered magnetic anisotropy in a direction substantially parallel with the medium facing surface. The hard bias layer may be...
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7360302 |
Manufacturing method of a magnetic sensor
A magnetic sensor comprises magnetoresistive elements and permanent magnet films, which are combined together to form GMR elements formed on a quartz substrate having a square shape, wherein the...
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7360298 |
Method of manufacturing a magnetic bias pinning layer for a GMR sensor of a magnetic head
A method for fabricating a magnetic head, including depositing a plurality of sensor layers, including a pinned magnetic layer, a spacer layer, a free magnetic layer, a bias spacer layer, and a...
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7360297 |
Magnetoresistive sensor with antiparallel coupled lead/sensor overlap region
A spin valve sensor with an antiparallel coupled lead/sensor overlap region is provided comprising a ferromagnetic bias layer antiparallel coupled to a free layer in first and second passive...
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7355823 |
Ta based bilayer seed for IrMn CPP spin valve
The effectiveness of an IrMn pinning layer in a CPP GMR device at high switching fields has been improved by replacing the conventional single layer seed by a layer of tantalum and either ruthenium...
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7343665 |
Method of making current-perpendicular-to-the-plane structure magnetoresistive head
The lower electrode is at least exposed at the surface of a substructure layer in a current-perpendicular-to-the-plane structure magnetoresistive element. A resist is formed to extend over the...
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7343664 |
Method of manufacturing a magnetic head with flux shaping layer
A method for fabricating a magnetic head includes forming a first pole and a flux shaping layer in spaced relation to the first pole. A nonmagnetic layer is formed adjacent the flux shaping layer...
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7331100 |
Process of manufacturing a seed/AFM combination for a CPP GMR device
An improved seed/AFM structure is formed by first depositing a layer of tantalum on the lower shield. A NiCr layer is then deposited on the Ta followed by a layer of IrMn. The latter functions...
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7325296 |
Method of fabricating a magnetic head
A magnetic head having a magnetic shield and/or pole layer that is fabricated as a plurality of laminated layers, in which each layer includes a sublayer thickness of Fe(N) and a sublayer thickness...
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7322095 |
Process of manufacturing a four-sided shield structure for a perpendicular write head
A process for reducing fringe field effects of a main write pole by shielding it on all four sides, with the regular return pole also serving as the leading edge shield, is described. The main pole...
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7320170 |
Xenon ion beam to improve track width definition
Using a beam of xenon ions together with a suitable mask, a GMR stack is ion milled until a part of it, no more than about 0.1 microns thick, has been removed so that a pedestal, having sidewalls...
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7320169 |
Self-pinned GMR structure by annealing
In a conventional spin valve the shunt resistance of the pinning layer reduces the overall efficiency of the device. This problem has been overcome by using IrMn for the pinning layer at a...
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7313857 |
Method of manufacturing a magneto-resistive device
A method of manufacturing a magneto-resistive device is provided for reducing a degradation in device characteristics due to annealing. The method includes the steps of depositing constituent...
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7313856 |
Method of manufacturing a magnetoresistive sensor with a thin antiferromagnetic layer for pinning antiparallel coupled tabs
A manufacturing method for a spin valve sensor with a thin antiferromagnetic (AFM) layer exchange coupled to a self-pinned antiparallel coupled bias layer in the lead overlap regions is provided....
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7301734 |
Longitudinal bias structure with improved magnetic stability
A GMR sensor having improved longitudinal biasing is provided as is a method of forming it. The improved biasing is provided by longitudinal biasing structures in which a soft magnetic layer is...
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7298586 |
Thin-film read element with multiple read sensors
The present invention relates to a thin-film read element for use in reading magnetic signals from a device. The read element includes a first thin-film read sensor and a second thin-film read...
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7293344 |
Process of making CD uniformity in high track density recording head
A process for achieving tighter reader and writer track width control is disclosed. The write gap layer is used as the plating seed on which the upper pole is electro-formed. This allows the write...
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7284315 |
Method of forming a magnetic tunnel junction
A method of forming a magnetic tunnel junction memory element and the resulting structure are disclosed. A magnetic tunnel junction memory element comprising a thick nonmagnetic layer between two...
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7275306 |
Damascene method for forming write coils of magnetic heads
An improved damascene method of forming a write coil of a magnetic head. The method includes the steps of forming a hard mask layer over an insulator layer; forming a photoresist layer over the...
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7275304 |
Method of forming a hard bias structure in a magnetic head
A hard bias (HB) structure for biasing a free layer in a MR sensor within a magnetic read head is comprised of a main biasing layer with a large negative magnetostriction (λ S ) value. Compressive...
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7274541 |
Magnetic thin film head, the fabrication method, and magnetic disk
In formation of an upper shield of a magnetic thin film head by electroplating, a current density of electroplating is regulated stepwise with time. Thus, in the upper shield formation, a film...
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7270758 |
Method to improve ability to perform CMP-assisted liftoff for trackwidth definition
A method is presented for fabricating a read head having a read head sensor and a hard bias/lead layer which includes depositing a strip of sensor material in a sensor material region, and...
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7269889 |
Method of manufacturing a magnetic head
As a protective film of an element and a slider in a magnetic head, a film is provided which is excellent in adhesiveness to a film forming surface and which shows sufficient corrosion-resistance...
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7263762 |
Method for reducing pole height loss in the formation of a write pole for a magnetic write head
A method for reducing plated pole height loss in the formation of a write pole for a magnetic write head is disclosed. The method includes forming a conductive layer on a thin film substrate,...
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7249406 |
Method to detect magnetic pole defects in perpendicular recording heads at wafer level
The perpendicular magnetic head fabrication and testing method includes the additional fabrication of magnetic pole testing structures in the kerf area of the wafer substrate. Particularly,...
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7246427 |
Method to achieve both narrow track width and effective longitudinal stabilization in a CPP GMR read head
Biasing schemes used for CIP GMR devices were previously thought to be impractical for CPP devices due to current shunting by the abutted hard magnets. In the present invention the CPP stripe is a...
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7246424 |
Magnetic devices having magnetic features with CMP stop layers
A magnetic device having a magnetic feature, the magnetic feature including a magnetic portion comprising a magnetic material, a region of non-magnetic material adjacent to the magnetic portion,...
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7243412 |
Method of manufacturing a magnetic head using a magneto-resistive effect
A method of manufacturing a magnetic head including a magnetic sensing portion formed of a magnetoresistive effect element, a magnetoresistive effect magnetic head manufacturing method depositing,...
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7240419 |
Method of manufacturing a magnetoresistance effect element
A method of manufacturing a magnetoresistance effect element includes forming an insulating layer on a first ferromagnetic layer, forming an aperture reaching the first ferromagnetic layer by...
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7239488 |
MR sensor on an insulating substrate and method of manufacture
According to an embodiment of the present invention, a slider design is presented that provides improved protection for the head/sensor of the slider. In one embodiment, the design of the slider is...
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7237322 |
Method for making a tunnel valve head with a flux guide
A method for making a tunnel valve head with a flux guide. The tunnel valve sensor is created by forming a tunnel valve at a first shield layer. The tunnel valve includes a free layer distal to the...
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7231705 |
Method for forming a resist pattern of magnetic device
A pattern forming method includes forming a resist pattern for lift off of a first film disposed on a surface side of a base, patterning the first film by dry etching using the resist pattern as a...
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7228617 |
Method for fabricating a GMR read head portion of a magnetic head
The GMR read head includes a GMR read sensor and a longitudinal bias (LB) stack in a read region, and the GMR read sensor, the LB stack and a first conductor layer in two overlay regions. In its...
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7219414 |
Method of manufacturing magnetic head for perpendicular magnetic recording
A main pole layer of a magnetic head includes a first portion disposed at a distance from a medium facing surface, and a second portion that is smaller in thickness than the first portion and...
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7213326 |
Method of manufacturing a horizontal thin film write, MR read head
A horizontal combined head is provided which has both a thin film write and an MR read element located at an air bearing surface (ABS). The read element can be formed with a track width that is...
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7207099 |
Method of manufacturing thin-film magnetic head having a magnetism intercepting layer provided between read head and write head
A thin-film magnetic head comprises a read head and a write head. The read head and the write head are placed such that a top shield layer of the read head and a bottom pole layer of the write head...
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7204014 |
Magnetic head with thin gap layers
A method for fabricating a magnetic head wherein a read head portion of the magnetic head includes a second gap insulation layer that includes a first portion that is fabricated upon the electrical...
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7204013 |
Method of manufacturing a magnetoresistive sensor
In a method of forming a magnetoresistive sensor, first and second magnetic leads are formed. Next, a junction of magnetic and electrically conductive material is formed between the first and...
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