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61.发明申请公开(公告)号：US20080141522A1
公开(公告)日：2008-06-19
申请号：US11611829
申请日：2006-12-15
CPC分类号： G11B5/3166 , G11B5/102 , G11B5/1278 , G11B5/3146 , G11B5/3169 , G11B5/3173 , Y10T29/49032 , Y10T29/49041 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： An optical lapping guide for determining an amount of lapping performed on a row of sliders in a process for manufacturing sliders for magnetic data recording. The optical lapping guide is constructed with a front edge that is at an angle with respect to an air bearing surface plane ABS plane, such that a portion of the lapping guides is in front of the ABS and portion of the lapping guide is behind the ABS. As lapping progresses, an increasing amount of the lapping guide will be exposed at the ABS and visible for inspection. Therefore, after a lapping process has been performed, the optical lapping guide can be inspected to determine the amount of material removed by lapping. The greater the amount of the lapping guide that is exposed and visible, the greater the amount of material removed by lapping.
摘要翻译： 光学研磨引导件，用于确定在用于制造用于磁数据记录的滑块的过程中对一排滑块执行的研磨量。 光学研磨引导件的前边缘相对于空气轴承表面平面ABS平面成一定角度，使得研磨导轨的一部分在ABS的前面，研磨导轨的一部分在ABS后面 。 随着研磨的进行，越来越多的研磨导轨将暴露在ABS处并可见以供检查。 因此，在进行研磨处理之后，可以检查光学研磨导向件以确定通过研磨去除的材料的量。 暴露和可见的研磨导轨的量越大，通过研磨去除的材料量就越大。
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62.发明申请Perpendicular magnetic write pole formation using an aluminum oxide wrap around mask 失效使用氧化铝缠绕掩模的垂直磁性写入磁极形成公开(公告)号：US20080072417A1
公开(公告)日：2008-03-27
申请号：US11525788
申请日：2006-09-21
申请人： Yimin Hsu , Vladimir Nikitin , Aron Pentek
发明人： Yimin Hsu , Vladimir Nikitin , Aron Pentek
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/3146 , G11B5/315 , G11B5/3163 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： A method for manufacturing a write pole for a perpendicular magnetic write head. The method includes forming a mask structure over a full film layer of magnetic write pole material. A layer of hard mask material such as conformally deposited alumina is then deposited full film over the mask and write pole material. An ion mill, such as in an Ar or CHF3 chemistry is then used to preferentially remove horizontally disposed portions of the alumina layer (hard mask layer), thereby forming vertical hard mask walls at the sides of the mask structure. An ion mill is then used to form the write pole, with the alumna side walls providing excellent masking for forming well defined write pole edges. A relatively gentle clean up process can then be performed to remove the remaining mask material and side walls. The use of the alumina side walls eliminated the need to use an alumina hard mask that extends over the entire top of the write pole, Because of this, after forming the write pole, a relatively gentle clean up such as TMAH etch and NMP can be used to remove the remaining mask and alumina walls from the write pole.
摘要翻译： 一种用于制造用于垂直磁写头的写极的方法。 该方法包括在磁性写入磁极材料的全部薄膜层上形成掩模结构。 然后将诸如保形沉积氧化铝的硬掩模材料层沉积在掩模上并写入极材料。 然后使用诸如Ar或CHF 3化学中的离子磨机来优先除去氧化铝层（硬掩模层）的水平设置的部分，从而在掩模结构的侧面形成垂直的硬掩模壁。 然后使用离子磨机形成写柱，校准侧壁为形成良好定义的写极边缘提供了优异的掩模。 然后可以执行相对温和的清理过程以除去剩余的掩模材料和侧壁。 使用氧化铝侧壁消除了使用在写入极的整个顶部上延伸的氧化铝硬掩模的需要。因此，在形成写入极之后，可以进行相对温和的清洁，例如TMAH蚀刻和NMP可以 用于从写入极上去除剩余的掩模和氧化铝壁。
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63.发明申请Perpendicular magnetic write head with shunt structure to prevent read sensor interference 有权垂直磁头，分流结构，防止读取传感器干扰公开(公告)号：US20080030897A1
公开(公告)日：2008-02-07
申请号：US11497202
申请日：2006-08-01
申请人： Hardayal Singh Gill , Kuok San Ho , Wen-Chien David Hsiao , Yimin Hsu , Edward Hin Pong Lee , Vladimir Nikitin
发明人： Hardayal Singh Gill , Kuok San Ho , Wen-Chien David Hsiao , Yimin Hsu , Edward Hin Pong Lee , Vladimir Nikitin
CPC分类号： G11B5/3123 , G11B5/1278 , G11B5/3967
摘要： A magnetic head structure for use in perpendicular magnetic recording. The magnetic head includes a magnetic write head having a return pole with a magnetic shunt structure extending from the back end opposite the ABS. The magnetic shunt structure prevents magnetic field from the write coil from reaching and affecting the read head. More specifically the shunt structure prevents magnetic field from the portion of the write coil beyond the back gap (as measured from the ABS) from magnetizing a magnetic shield of the read head. The shunt structure is also configured so as to avoid stray field writing. The size and shape of the shunt structure is therefore, limited to avoid attracting stray fields that might cause such stray field writing.
摘要翻译： 用于垂直磁记录的磁头结构。 磁头包括具有从与ABS相对的后端延伸的磁分路结构的返回极的磁写头。 磁分路结构防止来自写入线圈的磁场到达并影响读取头。 更具体地说，分流结构防止来自写入线圈的部分的磁场超过后隙（从ABS测量）来磁化读取磁头的磁屏蔽。 分流结构也被配置为避免杂散场写入。 因此，分流结构的尺寸和形状受到限制，以避免吸引可能导致这种杂散场写入的杂散场。
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64.发明授权公开(公告)号：US07187520B2
公开(公告)日：2007-03-06
申请号：US10791186
申请日：2004-03-01
IPC分类号： G11B5/147
CPC分类号： G11B5/3133
摘要： A magnetic head including a media heating device that is fabricated within the magnetic head structure. The media heating device includes an electrically resistive element that is fabricated above the first magnetic pole layer close to the ABS surface of the head. A P1 pole pedestal is fabricated above the heating element. Electrical insulation layers are fabricated beneath and above the heating element to prevent electrical shorting to the P1 pole layer and the P1 pole pedestal that are disposed beneath and above the heating element, respectively.
摘要翻译： 一种磁头，包括制造在磁头结构内的介质加热装置。 介质加热装置包括电阻元件，其制造在接近头部的ABS表面的第一磁极层的上方。 在加热元件上方制造一个P 1极基座。 在加热元件下方和上方制造电绝缘层，以防止分别设置在加热元件下方和上方的P 1极层和P 1极基座的电短路。
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65.发明申请Method for manufacturing a magnetic sensor having an ultra-narrow track width 审中-公开具有超窄轨道宽度的磁传感器的制造方法公开(公告)号：US20060273066A1
公开(公告)日：2006-12-07
申请号：US11143902
申请日：2005-06-01
CPC分类号： C23F4/00 , B82Y10/00 , G11B5/3116 , G11B5/3163 , G11B5/3903 , G11B5/3967 , G11B2005/3996
摘要： A method for constructing a device such as a magnetoresistive sensor having an extremely narrow width (track width). A photoresist mask is deposited with an edge where an edge of the device is to be located. A layer of material that is susceptible to removal by reactive ion etch (RIEable material) is then deposited over this first mask. The RIEable material is deposited by a conformal deposition method so that it covers the edge of the first mask substantially the same thickness as it covers the other areas. A reactive ion etch (RIE) is then performed to remove horizontally disposed portions of the RIEable layer intact, while leaving at least a portion of the RIEable material at the edge of the sensor intact. This remaining portion of the RIEable material can then be used as a very narrow mask for defining a device such as a magnetoresitive sensor by ion milling.
摘要翻译： 一种用于构造诸如具有极窄宽度（磁道宽度）的磁阻传感器的装置的方法。 光刻胶掩模沉积有设备边缘所在的边缘。 然后通过反应离子蚀刻（RIEable材料）容易去除的材料层沉积在该第一掩模上。 RIEable材料通过保形沉积方法沉积，使得它覆盖第一掩模的边缘，其覆盖其它区域的厚度基本相同。 然后执行反应离子蚀刻（RIE）以完全去除RIEable层的水平放置部分，同时将可再循环材料的至少一部分留在传感器的边缘完好无损。 然后可以将RIEable材料的剩余部分用作通过离子铣削定义诸如磁阻传感器的装置的非常窄的掩模。
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66.发明授权公开(公告)号：US07079353B2
公开(公告)日：2006-07-18
申请号：US10629060
申请日：2003-07-29
IPC分类号： G11B5/17
CPC分类号： G11B5/3136 , G11B5/012 , G11B5/17 , G11B5/3116 , G11B5/313 , G11B5/40
摘要： Magnetic heads having write coil structures with reduced electrical resistances for reducing thermal protrusion are disclosed. In one illustrative example, a magnetic head includes a magnetic yoke; a write gap layer formed between upper and lower poles of the magnetic yoke; and a write coil having a plurality of coil layers. Each coil layer of the write coil extends continuously between the upper and the lower poles through a plane defined by the write gap layer. Preferably, the write coil is formed using a damascene process, such that each coil layer is wider than each coil separating layer. Such a structure provides for a relatively large amount of coil materials to be used, which reduces the coil's electrical resistance. This, in turn, reduces the heat generated by the write coils during operation. Further, either one or both of the lower and upper poles may include a horizontally laminated structure of alternating magnetic and non-magnetic dielectric layers to further reduce heating caused by eddy current losses. Since thermal protrusion is reduced, the fly height of magnetic head may be made relatively small with a reduced risk of head-to-disk crashes and disk scratches.
摘要翻译： 公开了具有降低的电阻以减少热突起的具有写入线圈结构的磁头。 在一个说明性示例中，磁头包括磁轭; 形成在磁轭的上下极之间的写间隙层; 以及具有多个线圈层的写入线圈。 写入线圈的每个线圈层通过由写入间隙层限定的平面在上极和下极之间连续延伸。 优选地，使用镶嵌工艺形成写入线圈，使得每个线圈层比每个线圈分离层宽。 这种结构提供了相对大量的待使用的线圈材料，这降低了线圈的电阻。 这又减少了在操作期间由写入线圈产生的热量。 此外，下极和上极中的一个或两个可以包括交替的磁和非磁性介电层的水平层叠结构，以进一步减少由涡流损耗引起的加热。 由于热突起减少，所以磁头的飞行高度可以相对较小，同时降低了磁头与磁盘的碰撞和磁盘划痕的风险。
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67.发明授权公开(公告)号：US07075750B2
公开(公告)日：2006-07-11
申请号：US10652877
申请日：2003-08-29
申请人： Daniel Wayne Bedell , Quang Le , Edward Hin Pong Lee , Son Van Nguyen , Vladimir Nikitin , Murali Ramasubramanian
发明人： Daniel Wayne Bedell , Quang Le , Edward Hin Pong Lee , Son Van Nguyen , Vladimir Nikitin , Murali Ramasubramanian
IPC分类号： G11B5/147
CPC分类号： G11B5/127
摘要： An apparatus for patterning a self-aligned coil using a damascene process is disclosed. Coil pockets are formed in a first insulation layer disposed over a first pole layer. A barrier/seed layer is deposited along walls of the coil pockets in the insulation layer. Copper is formed in the coil pockets and over the insulation layer. The copper is planarized down to the insulation layer. The self-aligned coil process packs more copper into the same coil pocket and relaxes the coil alignment tolerance. Protrusions are prevented because of the more efficient and uniform spacing of the coil to reduce heat buildup in the head during a write.
摘要翻译： 公开了一种使用镶嵌工艺图案化自对准线圈的装置。 在设置在第一极层上的第一绝缘层中形成线圈腔。 隔离层/籽晶层沿绝缘层中的线圈袋的壁被沉积。 在线圈袋中形成铜，并在绝缘层上形成铜。 铜平坦化到绝缘层。 自对准线圈工艺将更多的铜包装到相同的线圈袋中，并松弛线圈对准公差。 由于在写入期间线圈的间隔更加有效和均匀以减少头部的积聚，所以防止了突起。
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68.发明申请Magnetic recording disk drive with data written and read as cross-track magnetizations 失效磁记录磁盘，数据写入和读取作为交叉磁道磁化公开(公告)号：US20060114589A1
公开(公告)日：2006-06-01
申请号：US11001399
申请日：2004-11-30
申请人： Vladimir Nikitin
发明人： Vladimir Nikitin
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/02 , G11B5/127 , G11B5/2655 , G11B5/31 , G11B5/3909 , G11B5/3912 , G11B5/3967 , G11B5/743 , G11B2005/0005 , G11B2005/3996
摘要： A magnetic recording disk drive has a disk with the magnetizations in the concentric data tracks oriented in the cross-track direction. The concentric data tracks are magnetically separated from each other by guard bands. An inductive write head has its write poles and write gap oriented to generate magnetic fields in the cross-track direction. The guard bands may provide magnetic separation by containing along-the-track magnetizations, in which case the write head also has an erase pole and an erase gap to generate magnetic fields in an along-the-track direction on the sides of the data tracks. A magnetoresistive read head has its free-layer magnetization direction perpendicular to the disk surface and its pinned-layer magnetization direction parallel to the disk surface and orthogonal to the free-layer magnetization direction. The read head may have magnetic side shields spaced from it in the cross-track direction to prevent magnetic flux from adjacent data tracks from reaching the read head.
摘要翻译： 磁记录盘驱动器具有在同心数据磁道中的磁化在磁道方向上定向的磁盘。 同心数据磁道通过保护带彼此磁性分离。 感应写入头具有写入极和写入间隙，以在交叉轨道方向上产生磁场。 保护带可以通过包含沿轨道磁化来提供磁分离，在这种情况下，写头还具有擦除极和擦除间隙，以在数据轨道的侧面上沿轨道方向产生磁场 。 磁阻读头具有垂直于盘表面的自由层磁化方向及其平行于盘表面并与自由层磁化方向正交的钉扎层磁化方向。 读取头可以具有在横向方向上与其隔开的磁性侧屏蔽，以防止来自相邻数据轨道的磁通量到达读取头。
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69.发明授权Magnetic head with a vertically laminated back gap structure having magnetic layer thicknesses less than the skin depth 失效具有垂直层叠的后隙结构的磁头，其磁性层厚度小于皮肤深度公开(公告)号：US06909579B2
公开(公告)日：2005-06-21
申请号：US10266471
申请日：2002-10-08
CPC分类号： G11B5/127 , G11B5/3116 , G11B5/313 , G11B5/3143 , G11B5/3163 , G11B5/3967 , G11B2005/0013 , Y10T29/49046
摘要： A magnetic write head having a vertically laminated back gap structure and method of making the same are disclosed. The magnetic head is formed with lower and upper pole pieces and a back gap structure which connects the lower and the upper pole pieces in a back gap region. In one illustrative example, the back gap is a vertically laminated structure having alternating layers of magnetic and non-magnetic materials. Each alternating layer is perpendicular to both the lower and the upper pole pieces. This vertically laminated structure significantly reduces the eddy currents in the back gap region at high operating frequencies as the layers are oriented in a direction parallel with the magnetic flux.
摘要翻译： 公开了一种具有垂直层压背隙结构的磁写头及其制造方法。 磁头形成有下极片和上磁极片，以及在后间隙区域中连接下极片和上极片的后间隙结构。 在一个说明性示例中，后间隙是具有交替的磁性和非磁性材料层的垂直层压结构。 每个交替层垂直于下极和上极片。 这种垂直层压结构在高度工作频率下显着地降低了后隙区域中的涡流，因为层在与磁通平行的方向上取向。
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70.发明授权Antiferromagnetically coupled bi-layer sensor for magnetic random access memory 有权用于磁随机存取存储器的反铁磁耦合双层传感器公开(公告)号：US06873542B2
公开(公告)日：2005-03-29
申请号：US10263495
申请日：2002-10-03
申请人： Savas Gider , Vladimir Nikitin
发明人： Savas Gider , Vladimir Nikitin
CPC分类号： G11C11/16
摘要： A magnetic tunnel junction (MTJ) memory array having a magnetically stable free layer that can be switched from one memory state to another with a minimum of energy input. The memory array includes a MTJ cell having an antiparallel coupled free layer. An electrically conductive word line passes through the free layer such that current passed through the electrically conductive word line induces a magnetic field that acts on antiparallel coupled layers of the free layer causing their magnetizations to rotate while remaining antiparallel to one another.
摘要翻译： 具有磁性稳定的自由层的磁性隧道结（MTJ）存储器阵列，其能够以最小的能量输入从一个存储器状态切换到另一个存储器状态。 存储器阵列包括具有反平行耦合自由层的MTJ单元。 导电字线通过自由层，使得通过导电字线的电流引起作用于自由层的反平行耦合层的磁场，导致它们的磁化旋转同时保持反向平行。
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