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公开(公告)号：US20200234934A1
公开(公告)日：2020-07-23
申请号：US16751079
申请日：2020-01-23
Applicant: Seagate Technology LLC
Inventor： Toon Hai FOO , Thomas P. Nolan
Abstract: An apparatus includes a target, wherein the target includes a nonuniform erosion profile. The apparatus also includes a number of interchangeable magnetic and non-magnetic inserts. The interchangeable magnetic and non-magnetic inserts are configured to control a pass through flux based on the nonuniform erosion profile.
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