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| Number | Title | Issue Date |
| 8176623 | Method of manufacturing a magnetic head for perpendicular magnetic recording A method of manufacturing the magnetic head includes the steps of: forming the pole-layer-encasing layer; forming an initial nonmagnetic layer in the groove of the pole-layer-encasing layer by physical vapor deposition, the initial nonmagnetic layer being intended t... | 05/15/2012 |
| 7995308 | Magnetic head for perpendicular magnetic recording and method of manufacturing same, the magnetic head incuding pole layer and two shields sandwiching the pole layer A magnetic head incorporates: a medium facing surface; a coil; a pole layer; first and second shields disposed to sandwich the pole layer therebetween; a first gap layer disposed between the first shield and the pole layer; a second gap layer disposed between the se... | 08/09/2011 |
| 7979978 | Method for manufacturing a self-aligned full side shield PMR A process for forming the write pole of a PMR head is described. This write pole is symmetrically located relative to its side shields, This is accomplished, not through optical alignment, but by coating the pole with a uniform layer of non-magnetic material of a pr... | 07/19/2011 |
| 7950136 | Process of making an improved AP1 layer for a TMR device A process to manufacturing a TMR read head with improved voltage breakdown is performed 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 sm... | 05/31/2011 |
| 7941911 | Planarization methods for patterned media disks A method is provided for forming a plurality of regions of magnetic material in a substrate having a first approximately planar surface. The method comprises the steps of fabricating projections in the first surface of the substrate, depositing onto the first surfac... | 05/17/2011 |
| 7924528 | Magnetic head for perpendicular magnetic recording and method of manufacturing same A top surface of a pole layer of a magnetic head includes: a first portion having a first edge located in a medium facing surface and a second edge opposite thereto; and a second portion located farther from the medium facing surface than the first portion and conne... | 04/12/2011 |
| 7843665 | Perpendicular magnetic recording head with nonmagnetic metal layer even with top face of pole layer A magnetic head including an encasing layer having a groove; a nonmagnetic metal layer that has a sidewall located directly above the edge of the groove and that is disposed on a region of the encasing layer away from the medium facing surface; two side shield layer... | 11/30/2010 |
| 7818875 | Method of manufacturing a magnetic head with integration of a small flash field, zero bias, and non-reactive ion milling for pole tip uniformity A method of manufacturing a magnetic write head that provides improved pole critical dimension control, such as improved track width control (improved sigma) and improved flare point control. The method involves a combination of several process improvements, such as... | 10/26/2010 |
| 7810227 | Process to manufacture CPP GMR read head 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 comprising a vertical section that includes all of the free layer, has... | 10/12/2010 |
| 7784170 | Method for forming a resist pattern of magnetic device by etching with a gas cluster ion beam A resist pattern for lift-off is formed on a first film composed of one or more layers deposited on a substrate. The first film is patterned by dry-etching using the resist pattern as a mask. Subsequently, a second film is deposited with presence of the resist patte... | 08/31/2010 |
| 7748103 | Method of manufacturing a perpendicular magnetic recording write head with notched trailing shield A perpendicular magnetic recording write head has a write pole, a trapezoidal-shaped trailing shield notch, and a metal gap layer between the write pole and notch. The write pole has a trailing edge that has a width substantially defining the track width and that fa... | 07/06/2010 |
| 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 DURAMIDE®. The first mask structure may be a bi-layer mask structure that... | 09/15/2009 |
| 7565732 | Method of manufacturing a write pole A method of fabricating a magnetic write head, in accordance with one embodiment, includes forming a beveled write pole. A conformal spacer may be formed upon a portion of a flare length proximate a tip of the write pole. A shield layer may also be formed upon the c... | 07/28/2009 |
| 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 side, such that the main pole air bearing surface is formed in the shape... | 01/13/2009 |
| 7453668 | Thin film magnetic head, method of manufacturing the same, and magnetic recording apparatus The present invention provides a method of manufacturing a thin film magnetic head capable of assuring recording characteristics by determining throat height with high precision. A TH specifying layer is formed so as to extend to a position P1 while being adj... | 11/18/2008 |
| 7444739 | Method for fabricating improved sensor for a magnetic head utilizing reactive ion milling process A magnetic head fabrication process in which a stencil layer is deposited upon a plurality of sensor layers. A photoresist mask in the desired read track width is fabricated upon the stencil layer. A reactive ion milling step is then conducted to remove the unmasked... | 11/04/2008 |
| 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 |
| 7443635 | Magnetic detector including antiferromagnetic layer, amorphous barrier layer, base layer, and hard layer arranged in that order and method for manufacturing magnetic detector A multilayer film is placed on a subatrate. The multilayer film includes an antiferromagnetic layer, a pinned magnetic layer, a non-magnetic material layer, and a free magnetic layer. The multilayer film has recessed sections arranged in both side regions thereof, t... | 10/28/2008 |
| 7422511 | Element for detecting the amount of lapping having a resistive film electrically connected to the substrate An element for detecting an amount of lapping of a stacked structure that includes a substrate and a magnetic field detecting sensor is provided. The element comprises: a resistive film that is arranged on a lapping surface of the stacked structure, the resistive fi... | 09/09/2008 |
| 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 |
| 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 |
| 7392578 | Thin film magnetic head and manufacturing method thereof A method for manufacturing a thin film magnetic head with a write element, the write element having a first yoke portion and a second yoke portion connected to each other by a back gap portion, a first pole portion and a second pole portion disposed in the medium-fa... | 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 |
| 7393262 | Apparatus including pin adapter for air bearing surface (ABS) lapping A system is provided for measuring a head during a lapping process. First provided is a wafer including at least one head each having an electrical lapping guide (ELG), a plurality of wafer contacts in electrical communication with the ELG, and a closure formed ther... | 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 |
| 7380331 | Methods for forming a reed sensor A method comprises depositing first and second lead layers in end regions which surround a central region; and forming a read sensor in the central region such that a first edge of the read sensor is disposed above an edge of the first lead layer and a second edge o... | 06/03/2008 |
| 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 |
| 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 |
| 7369369 | Bidirectional micropositioning recording head for a magnetic storage device A recording head for use in magnetic storage devices is disclosed. The recording head includes a transducer that is bi-directionally movable with respect to a magnetic medium surface of the magnetic storage medium, thereby enabling improved positioning of the transd... | 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 |
| 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 |
| 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 |
| 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 |
