| 摘要 |
PURPOSE:To effectively secure the magnetic anisotropy at the tip of a magnetic pole by forming the auxiliary magnetic poles having the thickness equal to or larger than the tip thickness of a lower magnetic pole at the both sides of this magnetic pole prior to the formation of an upper magnetic pole and then forming this upper magnetic pole. CONSTITUTION:A lower magnetic pole tip 5 is covered with a photoresist 8, etc., before an upper magnetic pole 6 is formed. Then a plating film is formed around the tip 5. Thus an auxiliary electrode 7 is obtained. Then the photoresist 8 is removed and a resist frame 1 is obtained. Then the pole 6 is formed by plating. In this case, a plan has such a form as shown in a figure. In such a way, a diamagnetic field is reduced at the tip of the pole 6 at formation of the pole 6. Then the magnetic anisotropy is effectively secured at the tip of the pole 6. |
