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Non-Uniform Write Gap Perpendicular Writer for Shingle Writing
Non-Uniform Write Gap Perpendicular Writer for Shingle Writing
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机译:非均一的写间隙垂直作者
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摘要
A PMR writer is disclosed that includes at least one of a recessed center section in the write pole trailing edge and a center recessed trailing shield to improve the field gradient at track edge. In all embodiments, there is a non-uniform write gap between the trailing edge and the trailing shield. The recessed portion of the write pole trailing edge and/or center recess of the trailing shield has a thickness from 10 to 40 nm in a down-track direction and a width in a cross-track direction of 20 to 200 nm. The distance between the center recess and a corner of the trailing edge is from 20 to 80 nm. A sequence of steps is provided to fabricate the two embodiments of the present invention.
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