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    • 5. 发明授权
    • Magnetic write head having a stair notched, steep shouldered pole and a write gap bump
    • 磁性写头具有阶梯式切口,陡峭的肩部极点和写入间隙凸起
    • US07675709B2
    • 2010-03-09
    • US11525789
    • 2006-09-21
    • Hung-Chin GuthrieWen-Chien David HsiaoJyh-Shuey LoAron Pentek
    • Hung-Chin GuthrieWen-Chien David HsiaoJyh-Shuey LoAron Pentek
    • G11B5/31G11B5/187
    • G11B5/3116G11B5/1278G11B5/3163
    • A magnetic write head structure that maximizes write field strength while minimizing stray fields. The write pole structure maximizes write field strength by minimizing saturation of the magnetic pole tips, and minimizes stray field writing by preventing magnetic fields from extending laterally from the sides of the magnetic pole. The write head structure includes a write pole having a pole tip configured with a stair notched shape and a steep shouldered base beneath the stair notched portion. This configuration maximizes the amount of flux that can be delivered to the pole tip while also avoiding stray fields. The magnetic pole can also be configured with wing shaped extensions that extend laterally from the pole tip region but which are recessed from the ABS by a desired amount. The magnetic write head structure can be manufactured by forming a magnetic pole with a raised portion, depositing a write gap material over the magnetic pole and then forming a magnetic pedestal over the magnetic pole and write gap, the pedestal having a width significantly smaller than the width of the raised portion of the magnetic pole, a first ion mill can then be performed to notch and trim the magnetic pole. Then a non-magnetic layer such as alumina can be deposited and a second ion mill performed to form a stair notched configuration. An alumina bump can be formed prior to ion milling to provide a mask for forming the laterally extending, recessed wings in the pole tip of the magnetic pole.
    • 磁写头结构,使写入场强度最大化,同时最小化杂散场。 写磁极结构通过最小化磁极尖端的饱和度来最大化写入场强度,并且通过防止磁场从磁极的侧面横向延伸来最小化杂散磁场写入。 写头结构包括具有构造为具有阶梯形切口形状的极尖的写入极和在阶梯切口部下方的陡峭的肩部基座。 该配置最大化可以传送到极尖的通量,同时也避免杂散场。 磁极还可以配置有翼形延伸部,其从极尖区域横向延伸,但是从ABS凹入所需量。 可以通过形成具有凸起部分的磁极来制造磁性写入头结构,在磁极上沉积写入间隙材料,然后在磁极和写入间隙上形成磁性基座,该基座具有明显小于 磁极的凸起部分的宽度,然后可以执行第一离子磨机来切割和修整磁极。 然后可以沉积诸如氧化铝的非磁性层,并且执行第二离子磨,以形成阶梯形缺口构型。 可以在离子研磨之前形成氧化铝凸块,以提供用于在磁极的极尖中形成横向延伸的凹入的翼的掩模。
    • 6. 发明申请
    • Magnetic write head having a stair notched, steep shouldered pole and a write gap bump
    • 磁性写头具有阶梯式切口,陡峭的肩部极点和写入间隙凸起
    • US20080074782A1
    • 2008-03-27
    • US11525789
    • 2006-09-21
    • Hung-Chin GuthrieWen-Chien David HsiaoJyh-Shuey LoAron Pentek
    • Hung-Chin GuthrieWen-Chien David HsiaoJyh-Shuey LoAron Pentek
    • G11B5/127
    • G11B5/3116G11B5/1278G11B5/3163
    • A magnetic write head structure that maximizes write field strength while minimizing stray fields. The write pole structure maximizes write field strength by minimizing saturation of the magnetic pole tips, and minimizes stray field writing by preventing magnetic fields from extending laterally from the sides of the magnetic pole. The write head structure includes a write pole having a pole tip configured with a stair notched shape and a steep shouldered base beneath the stair notched portion. This configuration maximizes the amount of flux that can be delivered to the pole tip while also avoiding stray fields. The magnetic pole can also be configured with wing shaped extensions that extend laterally from the pole tip region but which are recessed from the ABS by a desired amount. The magnetic write head structure can be manufactured by forming a magnetic pole with a raised portion, depositing a write gap material over the magnetic pole and then forming a magnetic pedestal over the magnetic pole and write gap, the pedestal having a width significantly smaller than the width of the raised portion of the magnetic pole, a first ion mill can then be performed to notch and trim the magnetic pole. Then a non-magnetic layer such as alumina can be deposited and a second ion mill performed to form a stair notched configuration. An alumina bump can be formed prior to ion milling to provide a mask for forming the laterally extending, recessed wings in the pole tip of the magnetic pole.
    • 磁写头结构,使写入场强度最大化,同时最小化杂散场。 写磁极结构通过最小化磁极尖端的饱和度来最大化写入场强度,并且通过防止磁场从磁极的侧面横向延伸来最小化杂散磁场写入。 写头结构包括具有构造为具有阶梯形切口形状的极尖的写入极和在阶梯切口部下方的陡峭的肩部基座。 该配置最大化可以传送到极尖的通量,同时也避免杂散场。 磁极还可以配置有翼形延伸部,其从极尖区域横向延伸,但是从ABS凹入所需量。 可以通过形成具有凸起部分的磁极来制造磁性写入头结构,在磁极上沉积写入间隙材料,然后在磁极和写入间隙上形成磁性基座,该基座具有明显小于 磁极的凸起部分的宽度,然后可以执行第一离子磨机来切割和修整磁极。 然后可以沉积诸如氧化铝的非磁性层,并且执行第二离子磨,以形成阶梯形缺口构型。 可以在离子研磨之前形成氧化铝凸块,以提供用于在磁极的极尖中形成横向延伸的凹入的翼的掩模。