Patent application number | Description | Published |
20100020441 | METHOD AND MANUFACTURE PROCESS FOR EXCHANGE DECOUPLED FIRST MAGNETIC LAYER - A perpendicular magnetic recording medium having a dual-layer magnetic film is disclosed. The bottom layer is completely exchange decoupled, and the top layer contains a certain amount of exchange coupling optimized for recording performance. Preferably, the bottom magnetic layer contains stable oxide material (for example, TiO | 01-28-2010 |
20100021763 | EASY TO WRITE AND HARD TO DECAY MEDIA FOR HARD DISK DRIVE APPLICATIONS - A magnetic recording medium is presented, characterized by having a nonmonotonicity in the DCD curve, resulting in low dynamic coercivity when writing information to the medium, with high static coercivity and thermal stability during storage. A method is also presented for producing the magnetic recording medium of the present invention. | 01-28-2010 |
20100021770 | NICKEL BASED ALLOYS AS CRYSTAL GROWTH ENHANCING AND MECHANICAL STRENGTHENING LAYER FOR PERPENDICULAR RECORDING MEDIA - The invention relates to a perpendicular magnetic recording medium having a substrate and a seed layer comprising a Ni alloy. | 01-28-2010 |
20100209739 | MAGNETIC STORAGE MEDIA WITH Ag, Au-CONTAINING MAGNETIC LAYERS - A magnetic recording medium having a Au, Ag-containing magnetic layer having Co, Cr, Ag and Au; the magnetic recording layer having Co-containing magnetic grains surrounded by substantially nonmagnetic Cr-containing grain boundaries; wherein said Ag and said Au are substantially immiscible in the Co-containing magnetic grains is disclosed. | 08-19-2010 |
20110003175 | COMPOSITE PERPENDICULAR MEDIA WITH GRADED ANISOTROPY LAYERS AND EXCHANGE BREAK LAYERS - A perpendicular magnetic recording layer may include a hard granular layer, an exchange break layer formed on the hard granular layer, and a soft granular layer formed on the exchange break layer. In some embodiments, the exchange break layer may consist essentially of ruthenium. In some embodiments, the perpendicular magnetic recording layer may include n magnetic layers and n−1 exchange break layers, where n is greater than or equal to three, and where the n−1 exchange break layers alternate with the n magnetic layers in the magnetic recording layer. | 01-06-2011 |
20130163118 | RECORDING MEDIUM WITH THIN STABILIZATION LAYER HAVING HIGH MAGNETIC SATURATION AND ANISOTROPIC FIELD CHARACTERISTICS - A perpendicular recording medium with enhanced magnetic stability. In accordance with some embodiments, a multi-layer recording structure is formed on a base substrate and adapted to magnetically store a magnetic bit sequence in domains substantially perpendicular to said layers. A thin magnetic stabilization layer is formed on the multi-layer recording substrate to magnetically stabilize an upper portion of the recording structure. | 06-27-2013 |
20130280556 | MAGNETIC RECORDING MEDIA WITH SOFT MAGNETIC UNDERLAYERS - Provided herein, is an apparatus that includes a nonmagnetic substrate having a surface; and a plurality of overlying thin film layers forming a layer stack on the substrate surface. The layer stack includes a magnetically hard perpendicular magnetic recording layer structure and an underlying soft magnetic underlayer (SUL), wherein the sum of a magnetic thickness of the layer stack is a magnetic thickness of up to about 2 memu/cm̂2. | 10-24-2013 |
20140178714 | Method and Manufacture Process for Exchange Decoupled First Magnetic Layer - A perpendicular magnetic recording medium having a dual-layer magnetic film is disclosed. The bottom layer is completely exchange decoupled, and the top layer contains a certain amount of exchange coupling optimized for recording performance. Preferably, the bottom magnetic layer contains stable oxide material (for example, TiO | 06-26-2014 |