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Class 360/126 - Laminated


Subclass of Class 360 - Dynamic magnetic information storage or retrieval
Definition: Subject matter including cores of laminate structure.
No. of patents: 1749
Last issue date: 09/20/2011


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NumberTitleIssue Date
8023227Perpendicular recording head with a grooved yoke
Disclosed is a perpendicular recording head for a hard disk drive. The perpendicular recording head includes a yoke that has a plurality of grooves essentially perpendicular to a magnetic flux that flows in a vertical direction relative to the yoke. The perpendicula...
09/20/2011
7777989Magnetic writer including an electroplated high moment laminated pole
A magnetic writing pole writes perpendicularly to a magnetic medium. The writing pole includes a multilayer structure with alternately electroplated magnetic layers and electroplated non-magnetic layers. The writing pole has a down-track thickness near the magnetic ...
08/17/2010
7773342Thin-film magnetic head having near-field-light-generating portion with trapezoidal end
A thin-film magnetic head for a heat-assisted magnetic recording which can perform a reliable writing immediately only on a desired track by applying a near-field light to a desired position and range is provided. The head comprises: an electromagnetic coil element ...
08/10/2010
7742259Perpendicular magnetic recording head capable of suppressing PTP and obtaining stabilized recording medium and method of manufacturing the same
Particularly, there is provided a perpendicular magnetic recording head capable of suppressing PTP and obtaining a stabilized recording ability by improving the shape of the opposed surface of a return yoke layer and a method of manufacturing the same. The shape of ...
06/22/2010
7692898Magnetic head that includes negative expansion material
Embodiments of the present invention pertain to a magnetic head that includes negative expansion material. According to one embodiment, the magnetic head includes a read element, a substrate, and at least a partial layer of negative expansion material to control, at...
04/06/2010
7688546Perpendicular magnetic recording head having nonmagnetic insertion layers
The method and system provide a perpendicular magnetic recording (PMR) head having an air bearing surface (ABS). The PMR head includes first and second poles each having front and back gap regions, a first nonmagnetic insertion layer between the back gap regions, a ...
03/30/2010
7684151Soft magnetic film and method of manufacturing same, thin-film magnetic head and method of manufacturing same, head arm assembly and magnetic disk drive
A pole layer of a magnetic head incorporates a soft magnetic film made of an iron-cobalt-nickel-base alloy. When the total of the iron, cobalt and nickel contents of the soft magnetic film is assumed as 100 weight percent, the iron content of the soft magnetic film ...
03/23/2010
7626785Thin film magnetic head, method of manufacturing the same, and magnetic recording apparatus
A main magnetic pole layer is constructed so as to have a stacking structure in which a lower main magnetic pole layer having relative low saturated magnetic flux density and an exposed surface area is positioned on a leading side, and an upper main magnetic pole la...
12/01/2009
7595960Thin film magnetic head having heating element
A thin film magnetic head is provided. The thin film magnetic head includes a read head and a write head, a heating element, or the combination thereof. The heating element includes a heating conductor layer and a high-melting-point-material layer disposed so as to ...
09/29/2009
7518826Perpendicular magnetic recording head and magnetic recording apparatus
A perpendicular magnetic recording head capable of preventing information erasing without intention at the time of non-recording through making the magnetic domain structure of a pole layer appropriate is provided. A main pole layer is formed so as to include a firs...
04/14/2009
7508630Thin film magnetic head and method of manufacturing the same
The present invention provides a method of manufacturing a thin film magnetic head, capable of easily manufacturing a thin film magnetic head with high precision, in which a magnetic shield layer is disposed so as to surround a magnetic pole layer from three directi...
03/24/2009
7486478Magnetic head
Provided is a magnetic head having a magnetic thin film structure that reduces the effect of a stray field and generates a magnetization reversal at a high speed. The magnetic head includes a first pole, a second pole spaced apart from the first pole, and an inducti...
02/03/2009
7474503Thin film magnetic head wafer with identification information
A thin-film magnetic head wafer includes a first principal surface and a second principal surface which are substantially parallel to each other. An electrical/magnetic transducer is provided on the first principal surface. Identification information is recorded on ...
01/06/2009
7468864Magnetic head for perpendicular magnetic recording and method of manufacturing same
A pole layer has an end located in a medium facing surface, the end having: a first side close to a substrate; a second side located opposite to the first side; a third side connecting an end of the first side to an end of the second side; and a fourth side connecti...
12/23/2008
7457080Perpendicular magnetic recording head, method of manufacturing the same, and magnetic recording apparatus
A perpendicular magnetic recording head capable of minimizing the possibility of erasing recorded information without intention at the time of recording information is provided. A pole layer has a structure in which a main pole layer disposed on a leading side and a...
11/25/2008
7446974Electronic component and tape head having a closure
An electronic component according to one embodiment comprises a portion of a row cut from a wafer; and a closure coupled to the portion of the row of the wafer towards a first edge of the portion of the row of the wafer; the portion of the row of the wafer having a ...
11/04/2008
7433153Soft magnetic film and thin film magnetic head using soft magnetic film, process for manufacturing soft magnetic film and process for manufacturing thin film magnetic head
The upper magnetic pole layer and/or lower magnetic pole layer comprises a soft magnetic film having a variable region in which the chemical composition of Fe changes in the direction of thickness in at least a part thereof, and the difference of the proportions of ...
10/07/2008
7420787Magnetoresistive sensor having a shape enhanced pinned layer
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 ...
09/02/2008
7397634Magnetic head coil system and damascene/reactive ion etching method for manufacturing the same
A system and method are provided for manufacturing a coil structure for a magnetic head. Initially, an insulating layer is deposited with a photoresist layer deposited on the insulating layer. Moreover, a silicon dielectric layer is deposited on the photoresist laye...
07/08/2008
7388732Perpendicular recording magnetic head with a write shield megnetically coupled to a first pole piece
A perpendicular recording write head has ferromagnetic first and second pole pieces which are connected at a back gap and an insulation stack with a write coil layer embedded therein is located between the first and second pole pieces and between a head surface of t...
06/17/2008
7382578Thin film magnetic head, method of manufacturing the same and magnetic recording apparatus
Provided is a method of manufacturing a thin film magnetic head capable of manufacturing a thin film magnetic head with as high performance as possible. A magnetic pole layer is formed so as to have a laminate structure in which an auxiliary magnetic pole layer (inc...
06/03/2008
7382579Magnetic head structure
A magnetic head structure capable of reducing the quantity of protrusion of a portion of a floating surface, at which a coil is located, toward a disk has been disclosed. The head comprises a coil 22, a magnetic pole 26 allowing a magnetic flux generat...
06/03/2008
7379269Write element with reduced yoke length for ultra-high density writing
A head including a write element for writing data to a magnetic media, and methods for its production are provided. A write element of the invention includes one or more of a recessed first pole, a heat sink layer, and a shortened yoke length. A method of the invent...
05/27/2008
7379276Magnetic recording head having a plurality of shield layers
Provided is a magnetic recording head including a return pole, a writing pole spaced by a predetermined distance from the return pole, an induction writing coil for inducing a magnetic field to be formed across the writing pole, and a plurality of shield layers form...
05/27/2008
7375926Inductive writer design using a soft magnetic pedestal having a high magnetic saturation layer
A magnetic head for writing information on a relatively-moving medium includes a first substantially flat soft magnetic pole layer and a second substantially flat pole layer with at least one coil layer between them. The pole layers are magnetically coupled in a cor...
05/20/2008
7375925Magnetic head for perpendicular magnetic recording and method of manufacturing same
A pole layer incorporates: a first portion having an end face located in a medium facing surface; and a second portion having a thickness greater than that of the first portion. A surface of the first portion closer to a substrate is located farther from the substra...
05/20/2008
7372667Thin-film magnetic head, head gimbal assembly with thin-film magnetic head, head arm assembly with head gimbal assembly, magnetic disk drive apparatus with head gimbal assembly and manufacturing method of thin-film magnetic head
A thin-film magnetic head comprising an inductive element including at least: a lower magnetic pole; a write gap layer; and an upper magnetic pole opposed to the lower magnetic pole through the write gap layer, a width WP2 in a track-width direction at a ...
05/13/2008
7372664Techniques to reduce adjacent track erasure including a write pole with a tip having faces at angles
Techniques for reducing adjacent track erasure include: a bucking coil having a lower number of turns than the write coil for bucking out a portion of the field induced by the write coil; a hybrid solenoid coil that includes turns that are in a pancake arrangement a...
05/13/2008
7372656disk drive with side erase control
Embodiments of the invention provide a disk drive that is capable of effectively controlling a side erase, which is one of the problems with the use of the perpendicular recording technology. In one embodiment, tracks on a recording medium are formed concentrically ...
05/13/2008
7372665Magnetic recording head with resistive heating element located near the write coil
A magnetic head includes a slider body having a trailing surface meeting an air-bearing surface at a trailing edge, with a thin-film transducer disposed on the trailing surface of the slider body near the trailing edge. The thin-film transducer includes a coil embed...
05/13/2008
7372666Magnetic head with alternately laminated (110)-orientation-inducing non-magnetic underlayers, magnetic layers, and discontinuous insulating layers
A magnetic head according to the present invention includes a write magnetic pole on which a magnetic film has been formed, and is characterized by the magnetic film being formed by alternately laminating magnetic layers, which have iron (Fe) and cobalt (Co) as main...
05/13/2008
7370405Fabrication 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
7367110Method 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
7369359Thin film magnetic head having sectional shape of write magnetic pole formed as a trapezoid
A thin film magnetic head having a high write-in accuracy can be produced by suppressing a magnetic field leak between upper and lower magnetic poles. The method of producing the thin film magnetic head, in which a head substrate, magnetoresistance effect element, l...
05/06/2008
7369360Perpendicular recording head having controlled permeability and saturation moment
A method and apparatus having magnetic properties. The apparatus includes a main pole and a return pole spaced apart from the main pole. The return includes at least one multilayer block having a plurality of alternating layers of magnetic material and non-magnetic ...
05/06/2008
7368227Method to print photoresist lines with negative sidewalls
It is very difficult to produce a negative wall angle from either negative or positive-tone chemically amplified resists, especially by e-beam lithography. This problem has now been overcome by first forming a photoresist pedestal in the conventional way, followed b...
05/06/2008
7369361Magnetic head and magnetic head substructure including resistor element whose resistance corresponds to the length of the track width defining portion of the pole layer
A method of manufacturing magnetic heads comprises the step of: fabricating a magnetic head substructure by forming components of a plurality of magnetic heads on a single substrate, wherein a plurality of rows of pre-head portions that will be the respective magnet...
05/06/2008
7369027High frequency magnetic thin film, composite magnetic thin film and magnetic device using them
A high frequency magnetic thin film characterized by comprising a first layer made of a T-L composition (here, T is Fe or FeCo, and L is one or more of C, B, and N) and a second layer comprising a Co-based amorphous alloy arranged on either of the surfaces of the fi...
05/06/2008
7369358Grounded writer core
A transducing head includes a substrate, a writer having a writer core, and an electrical connector for grounding the writer, wherein the electrical connector electrically connects the writer core to the substrate. ...
05/06/2008
7363699Method 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
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