| 摘要 |
PURPOSE:To stabilize magnetic anisotropy and improve frequency characteristics and writing/reading performance by providing dummy magnetic electrodes among plural magnetic pole elements. CONSTITUTION:An MR head 7b is provided with the dummy magnetic poles 42a and 42b among tip parts of magnetic pole elements 12a-13c (12c; not shown). Gaps (d) between the dummy magnetic poles 42a and 32b, and magnetic pole elements 12a-12c are set extremely small, and facing parts (c) are formed narrowly so that magnetic flux converges. A shield layer 13a is formed on a substrate 11 firstly and an insulating layer 14a is then formed. For example, ''Permalloy'' is vapor-deposited on the insulating layer to form element patterns 22a and 22b, and a dummy pattern 42a. Then, an insulating layer 14b is formed thereupon to form element patterns 32a and 32b and a dummy pattern 62a, and the dummy patterns 52a and 62a are coupled together to form the dummy electrode 42a. |
