摘要:
In accordance with the present invention, a colloidal immersion lithography medium is provided. The medium comprises: a) a continuous liquid phase comprising a liquid having an index of refraction of at least 1.0, generally 1.4; and b) a plurality of particles having an average particle size between 1 nanometer and 2 microns and having an index of refraction of at least that of the liquid, substantially homogeneously dispersed in the liquid phase. Also provided are methods of preparing a colloidal immersion lithography medium, immersion lithography systems, and immersion lithography processes.
摘要:
A heat assisted magnetic recording head with a multilayer electromagnetic (EM) radiation emission structure. The multilayer EM radiation emission structure is in optical communication with a light source for heating a recording medium. Particularly, the multilayer EM radiation emission structure includes a conducting layer for receiving the light source and a protective layer formed adjacent the conducting layer to protect the conducting layer from contact with a recording medium. An aperture extends through the conducting layer in the protective layer to allow the light source to pass therethrough to heat the recording medium.
摘要:
A method for forming a magnetic write pole with a trapezoidal cross-section is described. The method consists of first forming a magnetic seedlayer on a base followed by depositing a removable material layer on the seedlayer, and then a resist layer on the removable material layer. A trench is then formed in the resist, and the resist is heated to cause the cross-sectional profile of the trench to assume a trapezoidal shape. The resist is then capped with another resist layer and further heated to cause the width of the trapezoidal trench to become narrower. The cap layer and removable material layer at the bottom of the trench are then removed and the trench filled with magnetic material by electroplating. The resist and seedlayer external to the trench are finally removed to form a write pole with a trapezoidal cross-section.
摘要:
The present invention includes a magnetic sensing structure having a stripe height and a stripe width defining an area for a current flowing therethrough, and at least one electrode positioned adjacent an edge of the magnetic sensing structure for adjustably controlling the stripe width and/or stripe height, and therefore the area (SW×SH), of the magnetic sensing structure through which the current can flow.
摘要:
A magnetic field sensor includes a metallic bar coupled to a substrate. Current leads are adapted to provide current to the ferromagnetic bar. Voltage leads are coupled to the ferromagnetic bar to sense an induced Hall voltage therein.
摘要:
A data writing system includes an array of cells for storing data and a write transducer that moves over a selected cell in the array of cells. The write transducer includes a writer producing a write magnetic field that intersects the selected cell. The write transducer also includes a plasmon resonator that is adjacent the writer. The plasmon resonator is shaped to receive lower power density radiation and to provide plasmon radiation at a higher power density to an optical spot intersecting with the selected cell. The plasmon radiation heats the selected cell above a write temperature.
摘要:
A method for forming a magnetic write pole with a trapezoidal cross-section is described. The method consists of first forming a magnetic seedlayer on a base followed by depositing a removable material layer on the seedlayer, and then a resist layer on the removable material layer. A trench is then formed in the resist, and the resist is heated to cause the cross-sectional profile of the trench to assume a trapezoidal shape. The resist is then capped with another resist layer and further heated to cause the width of the trapezoidal trench to become narrower. The cap layer and removable material layer at the bottom of the trench are then removed and the trench filled with magnetic material by electroplating. The resist and seedlayer external to the trench are finally removed to form a write pole with a trapezoidal cross-section.
摘要:
A giant magnetoresistive (GMR) stack configured to operate in a current-perpendicular-to-plane (CPP) mode includes a ferromagnetic free layer, at least one synthetic antiferromagnet, at least one nonmagnetic spacer layer, and at least one antiferromagnetic pinning layer. The ferromagnetic free layer has a rotatable magnetic moment. The synthetic antiferromagnet includes a ferromagnetic reference layer having a fixed magnetic moment, a ferromagnetic pinned layer having a fixed magnetic moment, and a coupling layer positioned between the reference layer and the pinned layer, wherein the coupling layer is selected from the group consisting of Cu, Ag and CuAg. The nonmagnetic spacer layer is positioned between the free layer and the synthetic antiferromagnet. The antiferromagnetic pinning layer is positioned adjacent to the synthetic antiferromagnet.
摘要:
A method for forming a magnetic write pole with a trapezoidal cross-section is described. The method consists of first forming a magnetic seedlayer on a base followed by depositing a removable material layer on the seedlayer, and then a resist layer on the removable material layer. A trench is then formed in the resist, and the resist is heated to cause the cross-sectional profile of the trench to assume a trapezoidal shape. The resist is then capped with another resist layer and further heated to cause the width of the trapezoidal trench to become narrower. The cap layer and removable material layer at the bottom of the trench are then removed and the trench filled with magnetic material by electroplating. The resist and seedlayer external to the trench are finally removed to form a write pole with a trapezoidal cross-section.
摘要:
An apparatus comprises a first current-in-plane sensor, a first magnetic field source for biasing the first current-in-plane sensor in a first direction, a second current-in-plane sensor positioned parallel to the first current-in-plane sensor, a second magnetic field source for biasing the second current-in-plane sensor in a second direction, and first and second electrodes for supplying sense current to the first and second current-in-plane sensors.