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1. 发明授权

US06822830B2 Thin-film magnetic head and method of manufacturing same 有权
标题翻译：薄膜磁头及其制造方法
公开(公告)号：US06822830B2
公开(公告)日：2004-11-23
申请号：US09942871
申请日：2001-08-31
申请人： Tetsuya Mino , Atsushi Yamaguchi , Seiji Yari
发明人： Tetsuya Mino , Atsushi Yamaguchi , Seiji Yari
IPC分类号： G11B5127
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/313 , G11B5/3153 , G11B5/3163 , G11B5/3909 , G11B5/3967 , G11B2005/3996
摘要： A top pole layer in a write head includes, in a pole portion, a first layer having surfaces one of which is adjacent to a write gap layer, a second layer having surfaces one of which is adjacent to the other surface of the first layer, and a third layer having surfaces one of which is adjacent to the other surface of the second layer. The first to third layers have different saturation flux densities such that the closer the layer to the write gap layer, the higher saturation flux density.
摘要翻译：写头中的顶极层包括在极部分中的第一层，其具有与写间隙层相邻的表面，第二层具有与第一层的另一表面相邻的表面，以及第三层，其具有与第二层的另一表面相邻的表面。第一至第三层具有不同的饱和磁通密度，使得层与写间隙层越接近，饱和磁通密度越高。

2. 发明授权

US06801391B2 Magnetic head with ferrite between nonmagnetic portions and a nonmagnetic gap 失效
标题翻译：磁头与非磁性部分之间的铁素体和非磁性间隙
公开(公告)号：US06801391B2
公开(公告)日：2004-10-05
申请号：US10119472
申请日：2002-04-10
申请人： Akira Sugawara , Naoyuki Kaneyama , Akihiro Konno
发明人： Akira Sugawara , Naoyuki Kaneyama , Akihiro Konno
IPC分类号： G11B5127
CPC分类号： G11B5/255 , G11B5/102 , G11B5/1272 , G11B5/187 , G11B5/1878 , Y10T29/49041 , Y10T29/49055 , Y10T29/49057
摘要： There is provided a magnetic head formed with a pair of magnetic core halves fitted to abut on each other having a nonmagnetic gap therebetween and having a slide contact plane for slide contact with a magnetic recording medium on which an end face of the nonmagnetic gap and the magnetic core halves. In the magnetic head, a nonmagnetic portion formed by filling a glass material is provided at an end portion of the slide contact plane outer than the end face of the magnetic core halves on the slide contact plane. The inventive magnetic head realizes less volume of magnetic body while solving problems in mechanical strength of the magnetic head or in compatibility to a conventional head. Accordingly, a magnetic head with excellent head performance without decreasing productivity can be obtained.
摘要翻译：提供一种磁头，形成有一对磁芯半体，它们彼此抵接，彼此之间具有非磁性间隙，并且具有滑动接触平面，用于与非磁性间隙的端面上的磁记录介质滑动接触，磁芯半部。在磁头中，通过填充玻璃材料形成的非磁性部分设置在滑动接触平面外侧的滑动接触平面上的磁芯半部的端面外侧。本发明的磁头在解决磁头的机械强度问题或兼容于常规磁头的同时实现较少体积的磁体。因此，可以获得具有优异的头部性能而不降低生产率的磁头。

3. 发明授权

US06798623B2 Biased CPP sensor using spin-momentum transfer 有权
标题翻译：偏移CPP传感器采用自旋动量传递
公开(公告)号：US06798623B2
公开(公告)日：2004-09-28
申请号：US09683191
申请日：2001-11-29
申请人： Michael Allen Seigler , Petrus Antonius Van der Heijden
发明人： Michael Allen Seigler , Petrus Antonius Van der Heijden
IPC分类号： G11B5127
CPC分类号： G01R33/093 , B82Y10/00 , B82Y25/00 , G11B5/012 , G11B5/3903 , G11B5/3948 , G11B5/4886 , G11B2005/0008 , G11B2005/3996
摘要： Disclosed is a magnetoresistive magnetic field sensor wherein the sense current flows perpendicular to the plane of the layers of the sensor. The sensor is biased into a linear operating region of the transfer curve using the sense current or a permanent magnet in conjunction with the sense current.
摘要翻译：公开了一种磁阻磁场传感器，其中感测电流垂直于传感器的层的平面流动。传感器利用检测电流或永久磁铁结合感应电流偏置到传输曲线的线性运行区域。

4. 发明授权

US06788500B2 System and method for pre-stressing a read head for improving performance thereof 失效
标题翻译：用于预加重读头以提高其性能的系统和方法
公开(公告)号：US06788500B2
公开(公告)日：2004-09-07
申请号：US10139475
申请日：2002-05-06
申请人： Lydia Baril , Ciaran A. Fox , Jih-Shiuan Luo , Peter J. Melz , Chin-Yu Yeh
发明人： Lydia Baril , Ciaran A. Fox , Jih-Shiuan Luo , Peter J. Melz , Chin-Yu Yeh
IPC分类号： G11B5127
CPC分类号： G11B5/012 , G11B2005/0002 , G11B2005/0008 , G11B2005/0018 , G11B2005/0021 , Y10T29/49034 , Y10T29/49044
摘要： A system, method and computer program product provide an annealing process for setting a magnetization condition of a read head. An amount of heat for stabilizing magnetization condition of a read head is calculated. A width and amplitude of a voltage pulse that generates the calculated amount of heat in the read head are calculated. A voltage pulse of the calculated width and amplitude is applied to the read head for generating Joule heating in the read head. The width of the voltage pulse is less than one second.
摘要翻译：系统，方法和计算机程序产品提供用于设置读取头的磁化条件的退火处理。计算用于稳定读取头的磁化条件的热量。计算在读取头中产生计算出的热量的电压脉冲的宽度和幅度。所计算的宽度和幅度的电压脉冲被施加到读头，用于在读头中产生焦耳加热。电压脉冲的宽度小于1秒。

5. 发明授权

US06788499B2 Spin valve sensor with insulating and conductive seed layers 失效
标题翻译：具有绝缘和导电种子层的旋转阀传感器
公开(公告)号：US06788499B2
公开(公告)日：2004-09-07
申请号：US10441692
申请日：2003-05-19
申请人： Tsann Lin , Daniele Mauri
发明人： Tsann Lin , Daniele Mauri
IPC分类号： G11B5127
CPC分类号： B82Y25/00 , B82Y10/00 , B82Y40/00 , C23C14/0036 , C23C14/085 , C23C14/568 , G01R33/093 , G11B5/3163 , G11B5/3903 , G11B2005/3996 , H01F10/3295 , H01F41/302 , Y10T29/49032 , Y10T29/49044
摘要： A spin valve sensor with insulating and conductive seed layers is provided. The sensor comprising Al2O3/Ni—Cr—Fe/Ni—Fe/Co—Fe/Cu/Co—Fe/Ru/Co—Fe/Pt—Mn films is formed by depositing an insulating Al2O3 seed layer in a first chamber by reactively pulsed DC magnetron sputtering, depositing a conducting Ni—Cr—Fe seed layer and a ferromagnetic Ni—Fe free layer in a second chamber by ion beam sputtering, and then forming the remainder of the spin valve sensor in a third chamber by DC magnetron sputtering.
摘要翻译：提供具有绝缘和导电种子层的自旋阀传感器。包含Al2O3 / Ni-Cr-Fe / Ni-Fe / Co-Fe / Cu / Co-Fe / Ru / Co-Fe / Pt-Mn膜的传感器通过反应性沉积在第一腔室中而形成绝缘Al2O3晶种层脉冲DC磁控溅射，通过离子束溅射在第二室中沉积导电Ni-Cr-Fe种子层和铁磁性Ni-Fe自由层，然后通过DC磁控溅射在第三室中形成其余的自旋阀传感器。

6. 发明授权

US06781799B2 Current perpendicular-to-the-plane structure spin valve magnetoresistive head 失效
标题翻译：当前垂直于平面结构的自旋阀磁阻头
公开(公告)号：US06781799B2
公开(公告)日：2004-08-24
申请号：US09821185
申请日：2001-03-29
申请人： Yoshihiko Seyama , Atsushi Tanaka , Keiichi Nagasaka , Yutaka Shimizu
发明人： Yoshihiko Seyama , Atsushi Tanaka , Keiichi Nagasaka , Yutaka Shimizu
IPC分类号： G11B5127
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/00 , G11B5/012 , G11B5/3903 , G11B5/3967 , H01F10/3254
摘要： A current perpendicular-to-the-plane (CPP) structure spin valve magnetoresistive (MR) transducer includes an insulating layer. A pinned or free ferromagnetic layer serves to space or isolate the insulating layer from a non-magnetic spacer layer interposed between the pinned and free ferromagnetic layers. The sensing current is allowed to penetrate through the insulating layer. Fine pin-holes generally formed in the insulating layer are supposed to enable migration of electrons through the insulating layer. Similar to the situation in which the sensing current is allowed to flow through a reduced sectional area, a larger variation can be obtained in response to the inversion of the magnetization in the free ferromagnetic layer. The spin valve MR transducer is expected to greatly contribute to realization of a still higher recording density. Moreover, the spin valve MR transducer is also expected to exhibit an electric resistance approximately equal to a tenth part of that of a well-known tunnel junction magnetoresistive (TMR) element. Accordingly, a thermal noise can significantly be suppressed in the spin valve MR transducer as compared with the TMR element.
摘要翻译：电流垂直于平面（CPP）结构的自旋阀磁阻（MR）传感器包括绝缘层。被钉扎或自由的铁磁层用于将绝缘层与置于固定和自由铁磁层之间的非磁性间隔层隔离或隔离。允许感测电流穿过绝缘层。通常在绝缘层中形成的细针孔假设能使电子迁移通过绝缘层。类似于允许感测电流流过减小的截面面积的情况，响应于自由铁磁层中的磁化的反转，可以获得更大的变化。自旋阀MR换能器有望大大有助于实现更高的记录密度。此外，自旋阀MR换能器也预期会呈现大约等于公知的隧道结磁阻（TMR）元件的电阻的十分之一的电阻。因此，与TMR元件相比，自旋阀MR换能器可以显着地抑制热噪声。

7. 发明授权

US06775902B1 Method of making a magnetic head with aligned pole tips 失效
标题翻译：制造具有对准极尖的磁头的方法
公开(公告)号：US06775902B1
公开(公告)日：2004-08-17
申请号：US09590898
申请日：2000-06-09
申请人： Yiming Huai , Durga P. Ravipati , Mark D. Thomas , Carlos Corona , William D. Jensen
发明人： Yiming Huai , Durga P. Ravipati , Mark D. Thomas , Carlos Corona , William D. Jensen
IPC分类号： G11B5127
CPC分类号： G11B5/31 , G11B5/3106 , G11B5/3116 , G11B5/313 , G11B5/3153 , G11B5/3163 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49052
摘要： A magnetic head is fabricated by providing a substrate with a planar surface, forming at least one cavity in the planar substrate, depositing a second yoke layer in the cavity, forming a second pole tip in the cavity in contact with the second yoke layer, patterning an inductive coil in the cavity, depositing a gap layer over the second pole tip, sputtering a first pole tip over the gap layer, etching the first and second pole tips and the gap layer to form a stack of layers, depositing a protective layer over the stack of layers, leveling the protective layer to expose the first pole tip, and patterning a first yoke layer in contact with the first pole tip.
摘要翻译：通过提供具有平坦表面的基板来制造磁头，在平面基板中形成至少一个空腔，在空腔中沉积第二磁轭层，在空腔中形成与第二磁轭层接触的第二极尖，图案化空腔中的感应线圈，在第二极尖上方沉积间隙层，在间隙层上溅射第一极尖，蚀刻第一和第二极尖和间隙层，以形成一叠层，将保护层沉积在层叠层，使保护层平整以暴露第一极尖端，以及图案化与第一极尖接触的第一磁轭层。

8. 发明授权

US06765756B1 Ultra-short yoke and ultra-low stack height writer and method of fabrication 失效
标题翻译：超短磁轭和超低叠层高度写入器及其制造方法
公开(公告)号：US06765756B1
公开(公告)日：2004-07-20
申请号：US09268088
申请日：1999-03-12
申请人： Liubo Hong , Ronald A. Barr , Dashun Steve Zhou
发明人： Liubo Hong , Ronald A. Barr , Dashun Steve Zhou
IPC分类号： G11B5127
CPC分类号： G11B5/313 , G11B5/17 , G11B5/3116 , G11B5/3163
摘要： The present invention provides an improved thin film write head and method of fabrication capable of providing an ultra-short yoke and/or an ultra-low conductor winding stack. The present invention reduces yoke length and stack height by forming the conductor winding in a trench etched from an insulation layer, preferably formed of an inorganic insulation material. A thin resist mask is used to define the width of the trench while the etch process defines the depth. Preferably, the insulation layer is formed on a different inorganic insulation material to control the etch process, thus, the conductor winding may be formed on the underlying layer. The conductor winding preferably is formed by depositing conductor material so that it fills the trench and then planarizing, such as by chemical mechanical polish, to remove conductor material deposited outside the trench. An organic insulation layer, such as cured photoresist, may be deposited on the planarized surface of the conductor winding to insulate it from an overlying yoke. This overlying organic insulation layer may also define the apex angle of the head. The present invention may have multiple layers of conductor winding. The subsequent layers of conductor may be formed similar to the first layer, or may be formed with conventional photoresist processes and structures. The present invention may utilize any known pole structure or material.
摘要翻译：本发明提供了一种改进的薄膜写入头和制造方法，其能够提供超短磁轭和/或超低导体绕组。本发明通过在绝缘层中蚀刻的沟槽中形成导体绕组，优选地由无机绝缘材料形成，来减小磁轭长度和堆叠高度。当蚀刻工艺限定深度时，使用薄的抗蚀剂掩模来限定沟槽的宽度。优选地，绝缘层形成在不同的无机绝缘材料上以控制蚀刻工艺，因此，导体绕组可以形成在下层上。导体绕组优选地通过沉积导体材料形成，使得其填充沟槽，然后通过化学机械抛光来平坦化，以去除沉积在沟槽外部的导体材料。可以在导体绕组的平坦化表面上沉积有机绝缘层，例如固化的光致抗蚀剂，以使其与上覆的轭绝缘。该上覆的有机绝缘层也可以限定头部的顶角。本发明可以具有多层导体绕组。导体的后续层可以类似于第一层形成，或者可以用常规光刻胶工艺和结构形成。本发明可以利用任何已知的极结构或材料。

9. 发明授权

US06760200B2 Spin-valve thin-film magnetic element suitable for track narrowing and thin-film magnetic head using the same 失效
标题翻译：适用于轨道变窄的旋转阀薄膜磁性元件及使用其的薄膜磁头
公开(公告)号：US06760200B2
公开(公告)日：2004-07-06
申请号：US09989788
申请日：2001-11-19
申请人： Naoya Hasegawa
发明人： Naoya Hasegawa
IPC分类号： G11B5127
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3116 , G11B5/3903 , H01F10/3268 , H01F41/325
摘要： A spin-valve thin-film magnetic element includes a substrate, an antiferromagnetic layer, a pinned magnetic layer in contact with the antiferromagnetic layer, a free magnetic layer formed on the pinned magnetic layer with a nonmagnetic conductive layer therebetween, a pair of hard bias layers, and a pair of electrode layers. The magnetic read track width Tw is set at 0.4 &mgr;m or less. At least a part of the free magnetic layer is composed of an NiFe alloy, the Ni content CNi in the NiFe alloy being in the range of 70.2 to 89.9 atomic percent, or the magnetostriction &lgr;s of the free magnetic layer is in the range of −7.0×10−6 to 2.0×10−5. A thin-film magnetic head using such a spin-valve thin-film magnetic head is also disclosed.
摘要翻译：自旋阀薄膜磁性元件包括基板，反铁磁层，与反铁磁层接触的钉扎磁性层，在其上具有非磁性导电层的钉扎磁性层上形成的自由磁性层，一对硬偏置层和一对电极层。磁读取宽度Tw设定为0.4mum以下。自由磁性层的至少一部分由NiFe合金构成，NiFe合金中的Ni含量CNi在70.2〜89.9原子％的范围内，或者自由磁性层的磁致伸缩体的范围在 - 7.0×10 -6至2.0×10 -5。还公开了一种使用这种自旋阀薄膜磁头的薄膜磁头。

10. 发明授权

US06760198B2 Magnetic multilayered films with reduced magnetostriction 失效
标题翻译：具有减小的磁致伸缩的磁性多层膜
公开(公告)号：US06760198B2
公开(公告)日：2004-07-06
申请号：US09894193
申请日：2001-06-27
申请人： James Devereaux Jarratt
发明人： James Devereaux Jarratt
IPC分类号： G11B5127
CPC分类号： B82Y25/00 , G11B5/00813 , G11B5/0086 , G11B5/012 , G11B5/147 , G11B5/3109 , G11B5/4833 , G11B5/486 , H01F10/32
摘要： It is the primary object of the present invention to provide a shield and pole material with reduced magnetostriction while preserving good magnetic characteristics. This material is used in recording heads in tape and disk drives. The material is a repeating sequence of three layers. One layer is FeX(N) where the (N) indicates a nitrogenated film and the additional element, X, is preferentially Ta but can be selected from a group of elements. Another layer is made from a NiFe alloy. The third layer, disposed between the FeX(N) and NiFe layers is tantalum. The sequence of three layers is repeated to build the required thickness for the final material.
摘要翻译：本发明的主要目的是提供具有减小的磁致伸缩的屏蔽和极材料，同时保持良好的磁特性。该材料用于磁带和磁盘驱动器中的记录头。该材料是三层重复序列。一层为FeX（N），其中（N）表示氮化膜，附加元素X优选为Ta，但可以选自一组元素。另一层由NiFe合金制成。设置在FeX（N）和NiFe层之间的第三层是钽。重复三层的顺序以构成最终材料所需的厚度。

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