Patent application number | Description | Published |
20090197121 | THERMALLY STABLE HIGH ANISOTROPIC HIGH MAGNETIC MOMENT FILMS - High magnetic moment films FeCo(X, Y), where X is a transition metal element and Y is a rare earth element are formed using off-axis static deposition techniques. The films have tunable magnetic anisotropy from 0 Oe to greater than 500 Oe that are thermally stable beyond nominal photoresist curing temperatures. By using off-axis static deposited FeCo(X, Y) films as seed layers to normally deposited FeCo films, inplane anisotropy and the magnetic moment can be controlled for specific design needs. Epitaxial-like growth (column-to-column matching) from the off-axis static FeCo(X,Y) seed layers to normally deposited FeCo films is attributed to sustained anisotropy in the entire film. | 08-06-2009 |
20100214692 | MAGNETIC RECORDING HEAD WITH LAYERED STRUCTURE IN WRITE GAP - The present disclosure provides a magnetic recording head for a data storage system having improved write field characteristics. In one example, an apparatus having magnetic properties is provided. The apparatus includes a pole, a shield, and a multilayer block positioned between the pole and the shield. The multilayer block includes a plurality of layers wherein at least one of the plurality of layers comprises a magnetic material. In one embodiment, the multilayer block provides an antiferromagnetic coupling between the pole and the shield such that a magnetization of the pole is in a first direction and a magnetization of the shield in a second direction that is substantially anti-parallel to the first direction. | 08-26-2010 |
20100328817 | MAGNETIC MAIN WRITE POLE - A magnetic writer includes a write pole configured such that the easy magnetic axis is parallel to the vertical length direction of the write pole tip and to the ABS of the recording media. The write pole tip can be a multilayer structure comprising alternating magnetic and nonmagnetic layers with a planar orientation substantially perpendicular to the ABS and with magnetic anisotropy parallel to the vertical length direction of the write pole tip. The alternating magnetic and nonmagnetic layers may be formed by electroplating on a conformal seedlayer in a trench, or by static off axis physical vapor deposition. | 12-30-2010 |
20110007425 | MAGNETIC SENSOR WITH COMPOSITE MAGNETIC SHIELD - A magneto-resistive reader includes a first magnetic shield element, a second magnetic shield element and a magneto-resistive sensor stack separating the first magnetic shield element from the second magnetic shield element. The first shield element includes two ferromagnetic anisotropic layers separated by a grain growth suppression layer. | 01-13-2011 |
20120045662 | Recording Head For Heat Assisted Magnetic Recording With Diffusion Barrier Surrounding A Near Field Transducer - An apparatus includes a near field transducer positioned adjacent to an air bearing surface, a first magnetic pole, a heat sink positioned between the first magnetic pole and the near field transducer, and a diffusion barrier positioned between the near field transducer and the first magnetic pole. The diffusion barrier can be positioned adjacent to the magnetic pole or the near field transducer. | 02-23-2012 |
20130070576 | RECORDING HEAD FOR HEAT ASSISTED MAGNETIC RECORDING WITH DIFFUSION BARRIER SURROUNDING A NEAR FIELD TRANSDUCER - An apparatus includes a near field transducer positioned adjacent to an air bearing surface, a first magnetic pole, a heat sink positioned between the first magnetic pole and the near field transducer, and a diffusion barrier positioned between the near field transducer and the first magnetic pole. The diffusion barrier can be positioned adjacent to the magnetic pole or the near field transducer. | 03-21-2013 |
20130233823 | MAGNETIC SENSOR WITH COMPOSITE MAGNETIC SHIELD - A magneto-resistive reader includes a first magnetic shield element, a second magnetic shield element and a magneto-resistive sensor stack separating the first magnetic shield element from the second magnetic shield element. The first shield element includes two ferromagnetic anisotropic layers separated by a grain growth suppression layer. | 09-12-2013 |
20130343167 | RECORDING HEAD FOR HEAT ASSISTED MAGNETIC RECORDING WITH DIFFUSION BARRIER SURROUNDING A NEAR FIELD TRANSDUCER - An apparatus includes a near field transducer positioned adjacent to an air bearing surface, a first magnetic pole, a heat sink positioned between the first magnetic pole and the near field transducer, and a diffusion barrier positioned between the near field transducer and the first magnetic pole. The diffusion barrier can be positioned adjacent to the magnetic pole or the near field transducer. | 12-26-2013 |
20140004387 | THIN FILM WITH TUNED GRAIN SIZE | 01-02-2014 |
20140050057 | RECORDING HEAD INCLUDING NFT AND HEATSINK - An apparatus including a near field transducer positioned adjacent to an air bearing surface, the near field transducer comprising silver (Ag) and at least one other element or compound; a first magnetic pole; and a heat sink positioned between the first magnetic pole and the near field transducer, wherein the heat sink includes: rhodium (Rh) or an alloy thereof; ruthenium (Ru) or an alloy thereof; titanium (Ti) or an alloy thereof; tantalum (Ta) or an alloy thereof; tungsten (W) or an alloy thereof; borides; nitrides; transition metal oxides; or palladium (Pd) or an alloy thereof. | 02-20-2014 |
20140050058 | RECORDING HEAD INCLUDING A NEAR FIELD TRANSDUCER - An apparatus including a near field transducer positioned adjacent to an air bearing surface, the near field transducer including an electrically conductive nitride; a first magnetic pole; and a heat sink, a diffusion barrier layer, or both positioned between the first magnetic pole and the near field transducer, wherein the heat sink, the diffusion barrier or both include rhodium (Rh) or an alloy thereof; ruthenium (Ru) or an alloy thereof titanium (Ti) or an alloy thereof tantalum (Ta) or an alloy thereof tungsten (W) or an alloy thereof borides; nitrides; transition metal oxides; or palladium (Pd) or an alloy thereof. | 02-20-2014 |
20140146856 | THIN FILMS HAVING LARGE TEMPERATURE COEFFICIENT OF RESISTANCE AND METHODS OF FABRICATING SAME - An apparatus comprises a head transducer and a resistive temperature sensor provided on the head transducer. The resistive temperature sensor comprises a first layer comprising a conductive material and having a temperature coefficient of resistance (TCR) and a second layer comprising at least one of a specular layer and a seed layer. A method is disclosed to fabricate such sensor with a laminated thin film structure to achieve a large TCR. The thicknesses of various layers in the laminated thin film are in the range of few to a few tens of nanometers. The combinations of the deliberately optimized multilayer thin film structures and the fabrication of such films at the elevated temperatures are disclosed to obtain the large TCR. | 05-29-2014 |
20140147702 | Thin Film With Tuned Anisotropy and Magnetic Moment - An apparatus and associated method are generally described as a thin film exhibiting a tuned anisotropy and magnetic moment. Various embodiments may form a magnetic layer that is tuned to a predetermined anisotropy and magnetic moment through deposition of a material on a substrate cooled to a predetermined substrate temperature. | 05-29-2014 |
20140169146 | WRITE POLE FOR RECORDING HEAD - A write pole structure disclosed herein includes a write pole, a trailing shield, and a high magnetic moment (HMM) material layer on a surface of the trailing shield facing the write pole. | 06-19-2014 |
20140268415 | GAP BETWEEN MAGNETIC MATERIALS - In accordance with one embodiment, a method may be implemented by depositing a non-magnetic gap layer of material above a main pole layer of magnetic material; depositing a sacrificial layer of material above the non-magnetic gap layer of material; etching a portion of the sacrificial layer of material while not entirely removing the sacrificial layer of material; and depositing additional sacrificial material to the etched sacrificial layer. | 09-18-2014 |
20140272471 | NON-MAGNETIC SEED LAYER METHOD AND APPARATUS - In accordance with one embodiment, an apparatus can be configured that includes a main pole layer of magnetic material; a second layer of magnetic material; a first gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material; a second gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material; and wherein the second gap layer of non-magnetic material is disposed directly adjacent to the second layer of magnetic material. In accordance with one embodiment, this allows the gap to serve as a non-magnetic seed for the second layer of magnetic material. In accordance with one embodiment, this allows the gap to serve as a non-magnetic seed for the second layer of magnetic material. In accordance with one embodiment, a method of manufacturing such a device may also be utilized. | 09-18-2014 |