公开(公告)号：JP2000339642A

公开(公告)日：2000-12-08

申请号：JP2000146366

申请日：2000-05-18

Applicant: IBM

Inventor： THOMAS YOUNG CHAN ,  SHANRIN DYUAN ,  TERENCE TIN-LOCK LAMB ,  WEI C LENG

IPC: G11B5/11 ,  G11B5/31 ,  G11B5/39 ,  G11B5/60

Abstract: PROBLEM TO BE SOLVED: To simultaneously realize data writing and reading functions by causing an electromagnetic field shield element arranged between writing and reading head elements to shield the reading head from an electromagnetic field energy generated by the writing head. SOLUTION: After depositing an insulating layer, an electromagnetic field shield element 44 is deposited on the outer side of a writing head. This shield element 44 provides shielding to a circular inductive coil 120, is formed to be circular, and at least equal in diameter of the inductive coil 120. The shield 44 is disposed between the coil 120 and an MR reading head, and thereby the MR reading head is shielded from the electromagnetic field of the inductive coil 120. Even when the diameter of the shield is smaller than that of the inductive coil, an effective shielding effect is still maintained. Further, even when the shape of the inductive coil is other than circular, the shield is preferably identical to the shape of the inductive coil.