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| Number | Title | Issue Date |
| 8027125 | PMR with improved writability and process controllability by double layer patterning Improved writability and a sharper neck transition are achieved in a PMR writer with a yoke that has essentially vertical sidewalls and a write pole that has sidewalls with a beveled angle. An alumina mold is made with a negative differential bevel angle by employin... | 09/27/2011 |
| 7900342 | Methods of fabricating magnetoresistance sensors pinned by an etch induced magnetic anisotropy Magnetoresistance sensors with magnetic pinned layers that are pinned by anisotropic etch induced magnetic anisotropies and methods for fabricating the magnetoresistance sensors are provided. The method comprises forming a seed layer structure. The seed layer is etc... | 03/08/2011 |
| 7676905 | Method of manufacturing a self aligned magnetoresistive sensor A magnetoresistive sensor having a pinned layer that extends beyond the stripe height defined by the free layer of the sensor. The extended pinned layer has a strong shape induced anisotropy that maintains pinning of the pinned layer moment. The extended portion of ... | 03/16/2010 |
| 7603764 | Method of manufacturing a thin film magnetic head A method for manufacturing a thin film magnetic head having superior overwrite characteristics as well as having a locally minimized pole width includes: forming top pole chip having a first magnetic film that is a top layer portion of the top pole chip; forming a s... | 10/20/2009 |
| 7596855 | Method for manufacturing a magnetic head A thin film magnetic head capable of shortening a manufacturing time and a method of manufacturing the same are provided. After forming a write gap layer by using a non-magnetic conductive material such as copper, a top pole is formed on the write gap layer by growi... | 10/06/2009 |
| 7516538 | Method of manufacturing a magnetic head for perpendicular magnetic recording A method of manufacturing a magnetic head is disclosed. The steps of manufacture include the formation of an underlying layer made of a material whose etching rate of ion beam etching is higher than that of a magnetic alloy used to make a pole layer, and the formati... | 04/14/2009 |
| 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 pole, and subsequently polishing and planarizing the non-magnetic fi... | 03/17/2009 |
| 7441325 | Perpendicular head with trailing shield and rhodium gap process A perpendicular write head including a main pole and a trailing shield, the main pole being made of a diamond-like carbon (DLC) layer as hard mask and a rhodium (Rh) layer as shield gap, both DLC and Rh layers being CMP stop layers so as to avoid corner rounding and... | 10/28/2008 |
| 7430095 | Tapered write pole for reduced skew effect A write pole for a read/write head of a disk drive system has a tapered surface on a leading edge thereof. Preferably, the tapered surface has a taper angle of between 0 and 20 degrees from a plane normal to the ABS. By having a write pole with a taper in this manne... | 09/30/2008 |
| 7418778 | Method for producing a CPP thin-film magnetic head A CPP thin-film magnetic head includes a bottom shield layer; a top shield layer, the bottom shield layer and the top shield layer being disposed at a predetermined interval; a thin-film magnetic head element between the bottom shield layer and the top shield layer;... | 09/02/2008 |
| 7398592 | Manufacturable CMP assisted liftoff process to fabricate write pole for perpendicular recording heads This invention describes a manufacturable method, including a CMP liftoff process, for removing masking materials after ion milling for fabricating the write pole of a magnetic head. Significant parameters for the CMP assisted liftoff process include the thickness o... | 07/15/2008 |
| 7398591 | Manufacturing method of a thin-film magnetic head The present invention relates to a manufacturing method of a thin-film magnetic head whereby re-deposition and an overlapped part in a region of a magnetoresistive effect multi-layered structure opposite to an air bearing surface can be removed and also a width of a... | 07/15/2008 |
| 7395595 | Method for manufacturing P3 layer of a perpendicular magnetic write head A method for forming a P3 layer with NiFe and alumina mask using resist shrink process for use in perpendicular magnetic write heads. The method includes forming a laminated layer, forming an alumina layer on top of the laminated layer, depositing a conductiv... | 07/08/2008 |
| 7392577 | Method for manufacturing a perpendicular magnetic head A method of manufacturing a perpendicular magnetic head is disclosed, including perpendicular magnetic recording head includes forming a primary magnetic pole having a flat top surface, where a shield layer over the primary magnetic pole and at the sides of the prim... | 07/01/2008 |
| 7392579 | Method for protecting a slider mounted CPP GMR or TMR read head sensor from noise and ESD damage A slider mounted CPP GMR or TMR read head sensor is protected from electrostatic discharge (ESD) damage and from noise and cross-talk from an adjacent write head by means of a balanced resistive/capacitative shunt. The shunt includes highly resistive interconnection... | 07/01/2008 |
| 7392580 | Method for manufacturing a slider using electromagnetic wave A method for manufacturing sliders from a bar has: a radiating step which includes radiating an electromagnetic wave on at least a part of each space on a second surface of said bar, wherein said second surface is a back surface of a first surface of said bar, said ... | 07/01/2008 |
| 7389578 | Manufacturing method of a perpendicular recording magnetic head Embodiments in accordance with the present invention relate to methods wherein when a main pole is processed by using an ion milling technique, a re-adhesion layer created on the side face of the resist mask is removed with certainty. In one embodiment, an inorganic... | 06/24/2008 |
| 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 magnetic pole is provided as two layers with the first layer includin... | 06/17/2008 |
| 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 stop is formed on the magnetoresistive device layers, and a second l... | 06/10/2008 |
| 7380330 | Method for making magnetic write head After defining the P2 pole of a magnetic read head, alumina is deposited over it and planarized by CMP, with the portion of the alumina overlaying the ABS region of the P2 pole subsequently being masked by a photoresist layer and with the portions of the alumina ove... | 06/03/2008 |
| 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 layer is deposited. This results in a smooth surface, onto which to de... | 05/27/2008 |
| 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 includes a lower portion and an upper portion overlaid on the lower p... | 05/27/2008 |
| 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 track direction. The side surface of the main pole intersecting the cr... | 05/13/2008 |
| 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 the pole tip to achieve self-alignment. A mask is patterned with openin... | 05/06/2008 |
| 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 bias layer. The method includes providing a layered wafer stack to be ... | 05/06/2008 |
| 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 has a return yoke layer disposed on a trailing side of a magnetic pole ... | 04/29/2008 |
| 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 constructed of CoPt, CoPtCr or some other magnetic material and is deposited ov... | 04/29/2008 |
| 7363698 | Process for creating a write head by forming a bump after the top pole is formed Methods for creating a write head by forming a bump after the top pole is formed are provided. In one embodiment, a bottom pole is created out of a first layer. A non-magnetic gap material is applied to the surface of the wafer. A top pole is created out of a second... | 04/29/2008 |
| 7360296 | Method for reducing damage to sliders during lapping A process is described for fabricating sliders with reduced lapping damage to the hard-bias materials. The stack of layers for the magnetic sensor is deposited on a wafer and patterned into an initial shape. The hard-bias structures are fabricated at the side of the... | 04/22/2008 |
| 7360299 | Method for manufacturing a magnetic read sensor employing oblique etched underlayers for inducing uniaxial magnetic anisotropy in a hard magnetic in-stack bias layer A magnetoresistive sensor having an in stack bias layer with an engineered magnetic anisotropy in a direction parallel with the medium facing surface. The in-stack bias layer may be constructed of CoPt, CoPtCr or some other magnetic material and is deposited over an... | 04/22/2008 |
| 7360301 | Method of manufacturing a thin film magnetic head The invention is directed to improvement of a write element of a thin film magnetic head. The first pole portion projects from a flat surface of a first yoke portion at a medium-facing surface side and having a reduced width at its upper end. The second pole portion... | 04/22/2008 |
| 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 bias layer, and thereafter removing outer portions of the spacer layer, ... | 04/22/2008 |
| 7360300 | Method for manufacturing a magnetic read sensor employing oblique etched underlayers for inducing uniaxial magnetic anisotropy in a hard magnetic pinning layer A magnetoresistive sensor having a hard magnetic pinning layer with an engineered magnetic anisotropy in a direction substantially perpendicular to the medium facing surface. The hard magnetic pinning layer may be constructed of CoPt, CoPtCr, or some other magnetic ... | 04/22/2008 |
| 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 permanent magnet films are paired and connected to both ends of the mag... | 04/22/2008 |
| 7350284 | Methods of making a current-perpendicular-to-the-planes (CPP) type sensor by ion milling to the spacer layer using a mask without undercuts In one particular example, a plurality of CPP type sensor layers are formed over a wafer and a mask without undercuts is formed over the plurality of CPP type sensor layers in a central region. With the mask without undercuts in place, an ion milling process is star... | 04/01/2008 |
| 7346977 | Method for making a magnetoresistive read head having a pinned layer width greater than the free layer stripe height A method for making a magnetoresistive read head so that the pinned ferromagnetic layer is wider than the stripe height of the free ferromagnetic layer uses ion milling with the ion beam aligned at an angle to the substrate supporting the stack of layers making up t... | 03/25/2008 |
| 7343666 | Methods of making magnetic write heads with use of linewidth shrinkage techniques In one illustrative example, a method for use in making a magnetic write head includes the steps of forming a first pole piece layer of a first pole piece; forming a patterned resist over the first pole piece layer; electroplating a pedestal over the first pole piec... | 03/18/2008 |
| 7343668 | Method of manufacturing perpendicular magnetic recording head capable of highly precisely defining gap distance A method of manufacturing a perpendicular magnetic recording head is provided. The method accurately defines a gap layer. The method includes forming a lower gap layer made of a non-magnetic material on a main magnetic pole layer. An upper gap layer is formed on the... | 03/18/2008 |
| 7343669 | Method of manufacturing a thin film magnetic head A manufacturing method of a thin film magnetic head is provided. In the manufacturing method of a thin film magnetic head, an inorganic insulating layer is formed along at least a sidewall surface of each conductor part. A gap of each conductor part is filled by an ... | 03/18/2008 |
| 7340824 | Method for fabricating a magnetic head having an improved magnetic shield A first magnetic shield layer of the read head sensor is deposited upon a slider substrate surface. A patterned photoresist is then photolithographically fabricated upon the first magnetic shield layer with openings that are formed alongside the location at which th... | 03/11/2008 |
