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| Number | Title | Issue Date |
| 7307814 | Pedestal defined zero throat writer having a recessed pedestal A method and system for providing a pedestal defined zero throat write head is disclosed. The method and system include providing a first pole having a pedestal, providing a gap and providing a second pole. The first pole has a pedestal. The gap separates the pedest... | 12/11/2007 |
| 7305753 | Method for manufacturing a magnetic head A first magnetic layer is formed on a first magnetic layer formation surface, and then a first material layer-forming layer is deposited on the first magnetic layer formation surface and on the sides and the top of the first magnetic layer and is etched to form firs... | 12/11/2007 |
| 7304822 | Magnetic head with multilayer film including metal magnetic films and non-magnetic films and magnetic recording/reproducing device In a magnetic head, a multilayer film is disposed, the multilayer film including metal magnetic films and non-magnetic films that are alternately laminated, and a boundary between the multilayer film and a magnetic oxide substrate or a non-magnetic substrate on whic... | 12/04/2007 |
| 7304821 | Magnetic head coil structure and method for manufacturing the same A Damascene process is provided for manufacturing a coil structure for a magnetic head. During the manufacturing process, an insulating layer is initially deposited after which a photoresist layer is deposited. A silicon dielectric layer is then deposited on the pho... | 12/04/2007 |
| 7301727 | Return pole of a transducer having low thermal induced protrusion A transducer including a return pole having a return pole tip extending to an external surface of the transducer. The external surface of the return pole tip has an area that is larger than a cross-sectional area of the return pole taken parallel to the external sur... | 11/27/2007 |
| 7296337 | Notched trailing shield for perpendicular write head During fabrication of a perpendicular write head in a wafer, at least two sides of a write pole are defined (e.g. by ion milling) while a third side of the write pole is protected by a masking material. At this stage, a material that is to be located in the write ga... | 11/20/2007 |
| 7296338 | Method and apparatus for providing a reverse air bearing surface head with trailing shield design for perpendicular recording A method and apparatus for providing a reverse air bearing surface head with trailing shield design for perpendicular recording. A reverse air bearing surface head for perpendicular recording is provided with an inversed bevel shape to handle skew when recording dat... | 11/20/2007 |
| 7298587 | Rounded top pole A magnetic recording head having an air bearing surface for confronting a surface of a rotating disc and comprising a pole tip and a generally rounded and substantially planar body attached to the pole tip is disclosed. The width of the pole tip defines a track widt... | 11/20/2007 |
| 7296339 | Method for manufacturing a perpendicular magnetic recording head A method and system for manufacturing a perpendicular magnetic recording head is disclosed. The method and system include providing a chemical mechanical planarization (CMP) uniformity structure having an aperture therein and forming a perpendicular magnetic recordi... | 11/20/2007 |
| 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 gap layer to then be deposited through a precisely controllable proce... | 11/13/2007 |
| 7294418 | Magnetic film for magnetic head The magnetic film includes an FeCo layer, restrains erasing data by a magnetic field leaked from a magnetic pole, has high saturation magnetic flux density and soft magnetism and writes data with high recording density. The magnetic film for a magnetic head of the p... | 11/13/2007 |
| 7295401 | Laminated side shield for perpendicular write head for improved performance A perpendicular write head is disclosed for writing information onto tracks. The write head includes a top pole and a return pole and side shields with laminated layers wherein said laminated layers have magnetization in a direction parallel to an air bearing surfac... | 11/13/2007 |
| 7292415 | Ferromagnetic layered material having reliable uniaxial anisotropy A magnetoresistive film includes a pinned ferromagnetic layer, a free ferromagnetic layer, an intermediate layer interposed between the pinned and free ferromagnetic layers, and a pinning layer contacting the pinned ferromagnetic layer. The free ferromagnetic layer ... | 11/06/2007 |
| 7292408 | Bilayer coil insulation for magnetic write heads to minimize pole recession A magnetic write head for use in a data recording system having first and second magnetic pole, the first pole having a P1 pedestal. An electrically conductive coil passes through a space between the first and second poles for inducing a magnetic flux through the yo... | 11/06/2007 |
| 7290324 | Method for fabricating a magnetic head including a media heating element A magnetic head including a media heating device. Following the fabrication of the heating device, a sacrificial layer of material is deposited to protect the heating device during subsequent process steps. Thereafter, write head components, such as write head induc... | 11/06/2007 |
| 7292414 | External coil bias for giant magneto-resistive sensor A disk includes a perpendicular recording disk, a head having a read portion to read information recorded on the perpendicular recording disk, a sensor in the read portion, and a coil structure, coupled to the read portion, to provide bias flux to the sensor. The co... | 11/06/2007 |
| 7292407 | Disk drive with support structure for disk-vibration capacitive sensors A data recording disk drive has one or more capacitive sensors for sensing out-of-plane vibration of the disk or disks. The sensors are attached to a support structure that is attached to the disk drive housing. Each sensor is associated with a disk and faces a surf... | 11/06/2007 |
| 7292409 | Magnetic head with thin trailing pedestal layer A magnetic head for a disk drive is disclosed that has a first soft magnetic pole layer disposed in the head adjacent to a medium-facing surface and extending perpendicular to the medium-facing surface; a second soft magnetic pole layer disposed closer than the firs... | 11/06/2007 |
| 7289296 | Thin-film magnetic head having magnetic gap formed of NiP A gap of a thin-film magnetic head is formed of NiP. The P content of the NiP gap layer is controlled to be within the range of 11 mass percent to 14 mass percent so that the gap layer is nonmagnetic. ... | 10/30/2007 |
| 7289295 | Return pole field reduction for perpendicular write head In a single vertical pole magnetic writer, flux passing through the return pole can sometimes be strong enough to erase previously recorded data. This problem has been overcome by the addition of a second return pole that is magnetically connected to the conventiona... | 10/30/2007 |
| 7287314 | One step copper damascene CMP process and slurry A Chemical Mechanical Polish (CMP) process and slurry therefore slurry that is capable of removing NiFe, SiO2, Photoresist, Ta, alumina and Cu at substantially the same rate. The slurry is useful for obtaining a substantially planar surface of several materials whil... | 10/30/2007 |
| 7289297 | Multilayered ferromagnetic laminate having alternating cobalt alloy and iron-nitrogen alloy films for use with magnetic heads A multilayered ferromagnetic laminate includes a first magnetic film having a cobalt alloy and a second magnetic film having an iron-nitrogen alloy. The films are deposited upon one another and laminated to provide a multilayered film structure having an alternating... | 10/30/2007 |
| 7288333 | Magnetic film and thin film magnetic head using this magnetic film A soft magnetic film of the present invention is a plated film composed of Co and Fe, and columnar crystals extending in the film thickness direction are provided. In the present invention, columnar crystals extending in the film thickness direction are provided so ... | 10/30/2007 |
| 7289293 | Perpendicular recording magnetic disk apparatus A perpendicular recording magnetic disk apparatus has a perpendicular two-layered medium including a pinning layer, a soft underlayer and a perpendicular recording layer, and a write head including a main pole, a return yoke and an exciting coil. In this apparatus, ... | 10/30/2007 |
| 7289421 | Optical pickup head of optical recording reproducing apparatus, fabrication method thereof, lubricant-coated optical pickup head of optical recording reproducing apparatus and lubricant coating method thereof In an optical pickup head of an optical recording reproducing apparatus, a fabrication method thereof, a lubricant-coated optical pickup head of an optical recording reproducing apparatus and a method for coating lubricant onto an optical pickup head, by using a MEM... | 10/30/2007 |
| 7286321 | Thin film magnetic head having toroidal coil and manufacturing method of the same Within a space surrounded by a lower core layer, an upheaval layer, and a back gap layer, there are a plurality of first coil pieces arranged in a height direction and covered with a coil insulating layer. On the coil insulating layer, the upheaval layer, and a laye... | 10/23/2007 |
| 7283328 | Thin-film magnetic head, head gimbal assembly with thin-film magnetic head, magnetic disk drive apparatus with head gimbal assembly, method for designing thin-film magnetic head and manufacturing method of thin-film magnetic head A thin-film magnetic head includes at least one inductive write head element and at least one read magnetic head element, capable of controlling a spacing between a magnetic recording medium and the at least one magnetic read head element by heating. A gain SG (nm/... | 10/16/2007 |
| 7283317 | Apparatuses and methods for pre-erasing during manufacture of magnetic tape The present invention relates to direct current (“DC”) pre-erasing servo channels of a magnetic tape prior to writing servo data in a servo channel. The present invention particularly relates to those servo recordings which were written with a uni-polar current ... | 10/16/2007 |
| 7280314 | Lower saturation field structure for perpendicular AFC pole A magnetic write head for perpendicular magnetic recording having a laminated write pole with improved low saturation field. ... | 10/09/2007 |
| 7280313 | High aspect ratio co-planar structure fabrication consisting of different materials A a method for fabricating a structure, such as a magnetic head, having two coplanar metallic features of different compositions, both deposited on their own seed layers. The features may be made tall relative to their widths (ie. have a high aspect ratio), and are ... | 10/09/2007 |
| 7279424 | Method for fabricating thin film magnetic heads using CMP with polishing stop layer A method is described for thin film processing using a selected CMP slurry with a silicon dioxide stop layer. The slurry includes an abrasive, preferably alumina, a corrosion inhibitor, preferably benzotriazole (BTA), and an oxidizer preferably hydrogen peroxide. Th... | 10/09/2007 |
| 7280298 | Thin film magnetic head fit to recordation of higher frequency A set of coils wind around a magnetic core in a thin film magnetic head. Current supplying circuits are separately connected to the individual coils. The individual coils get shorter in the overall length as compared with the case where a set of coils consist of a s... | 10/09/2007 |
| 7277260 | Magnetic head spin valve structure with CoFeCu magnetic layer and ZnO/TaOcap layer A magnetic head that includes a spin valve sensor of the present invention which may be a CIP or CPP device. The sensor includes a free magnetic layer that is comprised of CoFeCu. In certain embodiments the free magnetic layer may also include a sublayer of NiFe. Th... | 10/02/2007 |
| 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 hard mask layer; performing an image patterning process to produce a wri... | 10/02/2007 |
| 7277251 | Data reliability improvement at low temperature Embodiments of the invention perform a stable data write operation at a low operating ambient temperature and promptly perform a write command process within a magnetic recording apparatus that employs a load/unload design. In one embodiment, write heads unloaded on... | 10/02/2007 |
| 7274542 | Magnetic sensor having a free layer containing a single magnetic domain A magnetic sensor includes a spacer having at least a nonmagnetic metal layer inserted between the upper shield layer and the longitudinal bias layers or between the upper shield layer and the longitudinal bias layers plus the magnetoresistive film, the shortest dis... | 09/25/2007 |
| 7274539 | Composite type thin film magnetic head having a low parasitic capacitance between a write coil and an upper read head shield A composite type thin-film magnetic head is provided, which comprises: a MR read head element having an upper shield layer, a lower shield layer, an MR layer in which a sense current flows in a direction perpendicular to a surface of the layer through the upper shie... | 09/25/2007 |
| 7272883 | Methods of forming an electrical connection in a magnetic head using a damascene process In one illustrative example disclosed, a method for use in making a magnetic head involves forming a thermal-assist heater for the magnetic head; forming a plurality of coil layers of a write coil using a damascene process; and simultaneously forming an electrical c... | 09/25/2007 |
| 7273667 | Longitudinal multi-layer magnetic recording medium A magnetic recording medium capable of attaining high in-plane recording density of 100 Mbits or more per 1 mm2 is provided. Magnetic recording medium is provided in which underlayers, a first magnetic layer, a first intermediate layer, a second magnetic ... | 09/25/2007 |
| 7271981 | Ultrafast pulse field source utilizing optically induced magnetic transformation A magnetic field transducer includes a phase transition material exhibiting a change from an antiferromagnetic phase to a ferromagnetic phase when heated above a critical temperature, means for applying a magnetic bias field to the phase transition material, and mea... | 09/18/2007 |
