Invention Grant
- Patent Title: Template-based magnetic grain-nucleation sites on seed layer
- Patent Title (中): 种子层上基于模板的磁性颗粒成核位点
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Application No.: US14154018Application Date: 2014-01-13
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Publication No.: US09245566B2Publication Date: 2016-01-26
- Inventor: Shuaigang Xiao , Thomas Young Chang , Yingguo Peng , David S. Kuo , Kaizhong Gao , Thomas P. Nolan , Ganping Ju
- Applicant: Seagate Technology LLC
- Applicant Address: US CA Cupertino
- Assignee: Seagate Technology LLC
- Current Assignee: Seagate Technology LLC
- Current Assignee Address: US CA Cupertino
- Main IPC: G11B5/66
- IPC: G11B5/66 ; G11B5/73 ; G11B5/855 ; G11B5/84

Abstract:
A perpendicular magnetic media includes a substrate, a patterned template, a seed layer and a magnetic layer. The patterned template is formed on the substrate and includes a plurality of growth sites that are evenly spaced apart from each other. The seed layer is formed over the patterned template and the exposed areas of the substrate. Magnetic material is sputter deposited onto the seed layer with one grain of the magnetic material nucleated over each of the growth sites. The grain size distribution of the magnetic material is reduced by controlling the locations of the growth sites which optimizes the performance of the perpendicular magnetic media.
Public/Granted literature
- US20140127533A1 PATTERNED TEMPLATE WITH 1xN NUCLEATION SITE TO GRAIN GROWTH FOR UNIFORM GRAIN SIZE RECORDING MEDIA Public/Granted day:2014-05-08
Information query
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