Invention Grant
US08089723B2 Damping control in magnetic nano-elements using ultrathin damping layer
失效
使用超薄阻尼层对磁性纳米元件进行阻尼控制
- Patent Title: Damping control in magnetic nano-elements using ultrathin damping layer
- Patent Title (中): 使用超薄阻尼层对磁性纳米元件进行阻尼控制
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Application No.: US11839034Application Date: 2007-08-15
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Publication No.: US08089723B2Publication Date: 2012-01-03
- Inventor: Manfred Ernst Schabes
- Applicant: Manfred Ernst Schabes
- Applicant Address: NL Amsterdam
- Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Patterson & Sheridan, LLP
- Main IPC: G11B5/127
- IPC: G11B5/127 ; G11B5/187

Abstract:
A write head and a method for forming the write head. The method includes providing a first pole and a second pole for the write head. The first pole and the second pole are formed from a ferromagnetic material. Regions of the write head including at least a portion of at least one of the first pole and the second pole of the write head are volumetrically doped with a dopant material selected from one of a 4d transition metal, 5d transition metal, and 4f rare earth metal. The dopant material is predetermined to provide a magnetic damping in the doped regions which is greater than the magnetic damping in the ferromagnetic material.
Public/Granted literature
- US20080212241A1 DAMPING CONTROL IN MAGNETIC NANO-ELEMENTS USING ULTRATHIN DAMPING LAYER Public/Granted day:2008-09-04
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