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    Read head with read track width defining layer that planarizes the write gap layer of a write head
    1.
    发明专利
    Read head with read track width defining layer that planarizes the write gap layer of a write head 未知

    公开(公告)号：GB2361801B

    公开(公告)日：2002-12-18

    申请号：GB0115773

    申请日：1999-11-24

    Applicant: IBM

    Inventor： CHANG HENRY CHINLIN ,  SCHWENKER ROBERT OTTO ,  HWANG CHERNGYE

    IPC: G11B5/012 ,  G11B5/31 ,  G11B5/39

    Abstract: A read track width defining layer is employed for defining first and second side edges of a read sensor. The read track width defining layer preferably remains in the head to planarize the read head at first and second hard bias and lead layers so as to overcome a problem of write gap curvature in an accompanying write head. The read track width defining layer is defined by a subtractive process about a bilayer photoresist layer. The subtractive process is selective to the read track width defining layer over a read sensor material layer therebelow. Ion milling is then employed for defining first and second side edges of a read sensor layer employing the read track width defining layer as a mask. First and second hard bias and lead layers are then deposited which make contiguous junctions with the first and second side edges of each of the read sensor and read track width defining layers. The photoresist is then removed and the remainder of the read head is completed.

    Read head with read track width defining layer that planarizes the write gap layer of a write head
    3.
    发明专利
    Read head with read track width defining layer that planarizes the write gap layer of a write head 未知

    公开(公告)号：GB2361801A

    公开(公告)日：2001-10-31

    申请号：GB0115773

    申请日：1999-11-24

    Applicant: IBM

    Inventor： CHANG HENRY CHINLIN ,  SCHWENKER ROBERT OTTO ,  HWANG CHERNGYE

    IPC: G11B5/012 ,  G11B5/31 ,  G11B5/39

    Abstract: A read track width defining layer (306, 310) is employed for defining first (322) and second side edges of a read sensor. The read track width defining layer (310) preferably remains in the head to planarize the read head at first (330) and second (332) hard bias and lead layers so as to overcome a problem of write gap curvature in an accompanying write head. The read track width defining layer is defined by a subtractive process about a bilayer photoresist layer (308). The subtractive process is selective to the read track width defining layer over a read sensor material layer (304) therebelow. Ion milling is then employed for defining first and second side edges of a read sensor layer employing the read track width defining layer as a mask. First and second hard bias and lead layers are then deposited which make contiguous junctions with the first and second side edges of each of the read sensor and read track width defining layers. The photoresist is then removed and the remainder of the read head is completed.

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