Invention Grant
US09053713B2 High coercivity magnetic film for use as a hot seed in a magnetic write head and method to grow it
有权
用于磁写头中的热种子的高矫顽力磁性膜及其生长方法
- Patent Title: High coercivity magnetic film for use as a hot seed in a magnetic write head and method to grow it
- Patent Title (中): 用于磁写头中的热种子的高矫顽力磁性膜及其生长方法
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Application No.: US13651437Application Date: 2012-10-14
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Publication No.: US09053713B2Publication Date: 2015-06-09
- Inventor: Shengyuan Wang , Kunliang Zhang , Min Li
- Applicant: Headway Technologies, Inc.
- Applicant Address: US CA Milpitas
- Assignee: Headway Technologies, Inc.
- Current Assignee: Headway Technologies, Inc.
- Current Assignee Address: US CA Milpitas
- Agency: Saile Ackerman LLC
- Agent Stephen B. Ackerman
- Main IPC: G11B5/127
- IPC: G11B5/127 ; G11B5/31 ; C23C14/02 ; C23C14/16
Abstract:
A sub-structure, suitable for use as a hot seed on which to form a perpendicular magnetic main write pole, is described. It is made up of a buffer layer of atomic layer deposited alumina on which there are one or more seed layers having a body-centered cubic (bcc) crystal structure. Finally, the high coercivity magnetic film lies on the seed layer(s). It is critical that the high coercivity magnetic film be deposited at a very low deposition rate (around 1 Angstrom per second).
Public/Granted literature
- US20140106182A1 High Coercivity Magnetic Film for Use as a Hot Seed in a Magnetic Write Head and Method to Grow It Public/Granted day:2014-04-17
Information query
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