Abarra
E. Noel Abarra, Tokyo JP
Patent application number | Description | Published |
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20100328818 | MAGNETIC RECORDING MEDIUM FOR PERPENDICULAR MAGNETIC RECORDING - A perpendicular recording medium having a perpendicular magnetic recording layer and a magnetically soft underlayer structure disposed beneath the recording layer. The soft underlayer structure includes at least first and second soft magnetic layers having different magnetic permeabilities to create a magnetic permeability gradient in the soft underlayer structure. One or more of the soft magnetic layers can be anti-parallel coupled. The soft underlayer structure of the present invention having a magnetic permeability gradient advantageously leads to reduced adjacent track erasure (ATE) while maintaining good overwrite (OW) properties. | 12-30-2010 |
20130022842 | Magnetic Recording Medium for Perpendicular Magnetic Recording - A perpendicular recording medium having a perpendicular magnetic recording layer and a magnetically soft underlayer structure disposed beneath the recording layer. The soft underlayer structure includes at least first and second soft magnetic layers having different magnetic permeabilities to create a magnetic permeability gradient in the soft underlayer structure. One or more of the soft magnetic layers can be antiparallel coupled. The soft underlayer structure of the present invention having a magnetic permeability gradient advantageously leads to reduced adjacent track erasure (ATE) while maintaining good overwrite (OW) properties. | 01-24-2013 |
Noel Abarra, Fuchu-Shi JP
Patent application number | Description | Published |
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20130299345 | SPUTTERING APPARATUS - A sputtering apparatus is provided with an elongated target holder, a substrate holder having a substrate receiving surface, and a mask assembly having an opening configured between the target holder and the substrate holder. The mask assembly is comprised of a first and second masking part having facing edges that form the opening and are disposed parallel to the substrate receiving surface and independently movable in a direction perpendicular to the length of the target holder and parallel to the substrate receiving surface, or in a direction perpendicular to the substrate receiving surface. | 11-14-2013 |
20130302532 | METHOD AND APPARATUS FOR MANUFACTURING PERPENDICULAR MAGNETIC RECORDING MEDIUM - A method and an apparatus for manufacturing a perpendicular magnetic recording medium are provided which can easily demagnetize a magnetic layer with a high coercivity. The method includes: forming a magnetic layer on a substrate; applying magnetic fields parallel to the surface of the magnetic layer having a coercivity reduced below the intensity of said magnetic field by heating of the magnetic layer; and removing said magnetic field. | 11-14-2013 |
20140141624 | METHOD OF MANUFACTURING TUNNEL BARRIER LAYER OR GATE INSULATOR FILM AND APPARATUS FOR MANUFACTURING TUNNEL BARRIER LAYER OR GATE INSULATOR FILM - It is an object of the present invention to provide a method of and an apparatus for manufacturing a tunnel barrier layer or a gate insulator film with good film quality and film thickness uniformity. The present invention is characterized in that, a shield is configured to shield a region of a substrate to which an erosion region of a target is projected along a normal from a surface of the target and sputtered particles are configured to deposit on the substrate linearly moved when passing through an opening formed in the shield. | 05-22-2014 |
Noel Einstein Abarra, Hachioji-Shi JP
Patent application number | Description | Published |
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20090236219 | MAGNETRON UNIT, MAGNETRON SPUTTERING APPARATUS, AND METHOD OF MANUFACTURING ELECTRONIC DEVICE - A magnetron unit includes a plurality of first magnet elements each including first magnets which have the same polarity and are provided on two end portions of a yoke plate made of a magnetic material and a second magnet which has a polarity different from that of the first magnets and is provided on a middle portion of the yoke plate, a base plate on which a moving unit is placed to make each of the plurality of first magnet elements move in one direction, and a second magnet element which includes yoke plates made of a magnetic material and fixed to two end portions respectively, of the base plate, a magnet which has the same polarity as that of the second magnet and is placed on the yoke plate and a magnet which has the same polarity as that of the first magnet and is placed on the magnet. | 09-24-2009 |