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    • 6. 发明专利
    • Magnetic head for perpendicular magnetic recording having main pole and shield
    • 具有主要和屏蔽性能的磁性记录磁头
    • JP2013114740A
    • 2013-06-10
    • JP2012234331
    • 2012-10-24
    • Headway Technologies Incヘッドウェイテクノロジーズ インコーポレイテッドSae Magnetics(H K )Ltd新科實業有限公司SAE Magnetics(H.K.)Ltd.
    • SASAKI YOSHITAKAITO HIROYUKISATO KAZUKITANEMURA SHIGEKIARAKI HIRONORISHIMIZU TATSUYA
    • G11B5/31
    • G11B5/1278G11B5/3116G11B5/3146G11B5/315G11B5/3163
    • PROBLEM TO BE SOLVED: To allow a main pole to produce a write magnetic field of sufficient magnitude while allowing a reduction in length of a magnetic path that passes through the main pole and a return path section that is located on the front side of the main pole in a direction of travel of a recording medium.SOLUTION: A magnetic head includes a coil, a main pole 15, a write shield 16, and a return path section 40. The return path section 40 is located on the front side of the main pole 15 in a direction of travel of a recording medium to thereby define a space S1. The coil includes a first coil element 121A and a plurality of second coil elements 122A and 122B extending to pass through the space S1. The second coil elements 122A and 122B are located on the front side of the first coil element 121A in the direction of travel of the recording medium. The return path section 40 includes a first portion 40A located such that the first coil element 121A is interposed between the first portion 40A and a medium facing surface 100, and a second portion 40B located such that the second coil elements 122A and 122B are interposed between the second portion 40B and the medium facing surface 100.
    • 要解决的问题:为了允许主极产生足够大的写入磁场,同时允许减小通过主极的磁路的长度和位于前侧的返回路径部分 的主极在记录介质的行进方向上。 解决方案:磁头包括线圈,主极15,写入屏蔽16和返回路径部分40.返回路径部分40沿着行进方向位于主极15的前侧 的记录介质,从而限定空间S1。 线圈包括第一线圈元件121A和延伸穿过空间S1的多个第二线圈元件122A和122B。 第二线圈元件122A和122B在记录介质的行进方向上位于第一线圈元件121A的前侧。 返回路径部分40包括第一部分40A,第一部分40A被定位成使得第一线圈元件121A插入在第一部分40A和面向介质的表面100之间,第二部分40B被定位成使得第二线圈元件122A和122B介于 第二部分40B和介质面向表面100.版权所有(C)2013,JPO&INPIT
    • 7. 发明专利
    • Main magnetic pole forming method for heat assisted magnetic recording head
    • 用于热辅助磁记录头的主要磁极形成方法
    • JP2012243384A
    • 2012-12-10
    • JP2012009717
    • 2012-01-20
    • Headway Technologies Incヘッドウェイテクノロジーズ インコーポレイテッド
    • ARAKI HIRONORISASAKI YOSHITAKAITO HIROYUKISATO KAZUKITANEMURA SHIGEKIIKEGAWA YUKINORI
    • G11B5/31
    • G11B5/3163G11B5/3116G11B2005/0021Y10T29/4902Y10T29/49021Y10T29/49032Y10T29/49043
    • PROBLEM TO BE SOLVED: To easily form a main magnetic pole of a shape where a rear end surface is vertical or almost vertical to a top surface of a substrate and, on a front end surface, a first end closer to the top surface of the substrate is smaller in width in a track width direction than a second end farther from the top surface of the substrate.SOLUTION: Using a first etching mask having a first opening, an initial housing layer 20P is etched by an RIE to form a groove part 20P1. Then, so as to enable the groove part 20P to be a housing part, using a second etching mask 54 having a second opening, a part of the initial housing layer 20P including the groove part 20P1 is etched by the RIE. Then, a main magnetic pole is formed in the housing part. The first etching mask includes first and second side walls facing each other with a first interval in a track width direction. The second etching mask 54 includes side walls 54a and 54b facing each other with a second interval larger than the first interval.
    • 要解决的问题:为了容易地形成后端表面垂直或几乎垂直于基板的顶表面的形状的主磁极,并且在前端表面上,靠近顶部的第一端 基板的表面在轨道宽度方向上的宽度比距离基板的顶表面更远的第二端较小。 解决方案:使用具有第一开口的第一蚀刻掩模,通过RIE蚀刻初始外壳层20P以形成凹槽部分20P1。 然后,为了使凹槽部分20P成为壳体部分,使用具有第二开口的第二蚀刻掩模54,通过RIE蚀刻包括凹槽部分20P1的初始壳体层20P的一部分。 然后,在壳体部分中形成主磁极。 第一蚀刻掩模包括在轨道宽度方向上以第一间隔彼此面对的第一和第二侧壁。 第二蚀刻掩模54包括彼此面对的具有大于第一间隔的第二间隔的侧壁54a和54b。 版权所有(C)2013,JPO&INPIT