Patent Number: 8,792,211

Title: Method and data storage device for laser free heat-assisted magnetic recording

Abstract: A data storage device with a heat assisted magnetic recording (HAMR) system, a magnetic recording medium, and method for data storage are provided. The data storage device includes a magnetic recording medium, a magnetic recording head, a power supply, a controller and a switching device. The magnetic recording head includes a main pole having a surface area facing the magnetic recording medium. The controller is coupled to the magnetic recording head for controlling writing information to and reading information from the magnetic recording medium. The switching device electrically couples the power supply between the main pole and the magnetic recording medium in response to a signal provided from the controller when writing information to the magnetic recording medium. The magnetic recording medium comprises a plurality of layers, including a heating layer, a field enhanced conduction layer, and an electrode layer. The electrode layer is electrically coupleable to the power supply and the magnetic recording head for heating a portion of the heating layer opposite the magnetic recording head during writing of data by the magnetic recording head to the magnetic recording medium, the portion of the heating layer defined by an electric field applied to the field enhanced conduction layer.

Inventors: Yuan; Zhimin (Singapore, SG), Liu; Bo (Singapore, SG), Low; Boon Hao (Singapore, SG), Zhou; Tiejun (Singapore, SG), Leong; Siang Huei (Singapore, SG), Zhang; Mingsheng (Singapore, SG)

Assignee: Agency for Science, Technology and Research

International Classification: G11B 5/127 (20060101)

Expiration Date: 7/29/12018