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| Number | Title | Issue Date |
| 7369360 | Perpendicular 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 |
| 7355813 | Method of fabricating a narrow projection such as a write pole extending from a substrate An article is formed as a substrate having a projection extending outwardly therefrom. The article may be a magnetic recording head and the projection a write pole. The projection has a width in a thinnest dimension measured parallel to a substrate surface of no mor... | 04/08/2008 |
| 7312951 | Magnetic head for perpendicular magnetic recording The invention provides a magnetic head for perpendicular magnetic recording having an air bearing surface positioned facing the recording surface of a recording medium, which records magnetic information on the recording medium by generating magnetic flux toward the... | 12/25/2007 |
| 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 |
| 7193814 | Pole piece for high track density recording For high track density recording, tighter reader and writer track width control are essential. This has been achieved by using a plated NiPd write gap which is self-aligned with a plated 23 KG pole material. Heat dissipation by the writer is thus improved since alum... | 03/20/2007 |
| 7177117 | Magnetically soft, high saturation magnetization laminates of iron-cobalt-nitrogen and iron-nickel for magnetic head pole layers A magnetic head comprising a first layer containing NiFe having a concentration of iron that is at least thirty percent and not more than seventy percent; a second layer that adjoins the first layer and contains FeCoN having a concentration of iron that is greater t... | 02/13/2007 |
| 7157160 | Magnetic thin film and method of manufacturing the same The magnetic thin film has high saturation magnetic flux density and superior soft magnetic characteristics. The magnetic thin film of the present invention comprises: a base layer being made of FeCo/NiFe; and a plated layer being formed on the base layer, the plate... | 01/02/2007 |
| 7112375 | Seed layer structure for improved crystallographic orientation of a hard magnetic material A seed layer structure for improved crystallographic orientation of grains in a hard magnetic material is disclosed. The seed layer structure is comprised of alternating layers of a metal and a dielectric. Hard magnetic materials deposited on the seed layer structur... | 09/26/2006 |
| 7101633 | Electroplated magnetic thin film, method of manufacturing the same, electroplating bath and thin film magnetic head An electroplated magnetic thin film consisting of an electroplated film of Fe—Co alloy containing Fe by an amount of 52–86 wt % and having a highly packed fine crystal grain structure, a flat and glossy surface, a high saturation magnetic flux density not less t... | 09/05/2006 |
| 5108837 | Laminated poles for recording heads The pole includes at least two ferromagnetic layers having different uniaxial anisotropies with the layers in a master/slave relationship, and a nonmagnetic layer disposed between the ferromagnetic layers. The nonmagnetic layer inhibits exchange coupling ... | 04/28/1992 |
| 5089334 | Flux spreading thin film magnetic devices A method of flux conduction comprising providing a structure with anisotropy not purely in the transverse in-plane direction such that flux spreading into the transverse in-plane direction can occur by rotation. This method of flux conduction is used in magnet... | 02/18/1992 |
| 5085935 | Flux spreading thin film magnetic devices One aspect of the invention is a method of flux conduction comprising providing a structure with anisotropy not purely in the transverse in-plane direction such that flux spreading into the transverse in-plane direction can occur by rotation. Apparatus in... | 02/04/1992 |
| 4517616 | Thin film magnetic recording transducer having embedded pole piece design The subject invention relates to the fabrication of metal oxide patterns on a substrate adapted for use with thin film magnetic heads. The metal oxide pattern has a precisely defined geometry including nearly vertical side walls, for minimizing read/write... | 05/14/1985 |
