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11. 发明授权

US06168845A Patterned magnetic media and method of making the same using selective oxidation 有权
标题翻译：图案化的磁性介质和使用选择性氧化制备相同的方法
公开(公告)号：US06168845A
公开(公告)日：2001-01-02
申请号：US09233710
申请日：1999-01-19
申请人： Robert Edward Fontana, Jr. , Richard Hsiao , Ernesto Esteban Marinero , Hugo Alberto Emilio Santini , Bruce David Terris
发明人： Robert Edward Fontana, Jr. , Richard Hsiao , Ernesto Esteban Marinero , Hugo Alberto Emilio Santini , Bruce David Terris
IPC分类号： B32B302
CPC分类号： B82Y10/00 , G11B5/656 , G11B5/743 , G11B5/82 , G11B5/84 , G11B5/855 , Y10S428/90 , Y10T428/31678
摘要： A new method for making patterned magnetic storage media with magnetic and substantially non-magnetic zones utilizes a selective oxidation processes. Selective oxidation is achieved by subjecting a magnetic layer to an oxygen plasma through voids in a patterned mask. A high resolution patterned mask is made by embossing and reactive ion etch processes. The method is used to fabricate patterned magnetic disks media with alternating magnetic and non-magnetic zones ranging from 10 to 1000 Nanometers in width. Magnetic storage disks produced by this method have high-bit densities, minimal topography and reduced signal noise.
摘要翻译：用于制造具有磁性和基本上非磁性区域的图案化磁存储介质的新方法利用选择性氧化工艺。通过在图案化掩模中通过空隙使磁性层经受氧等离子体来实现选择性氧化。通过压花和反应离子蚀刻工艺制成高分辨率图案掩模。该方法用于制造具有10至1000纳米宽度的交替磁性和非磁性区域的图案化磁盘介质。通过该方法制造的磁存储盘具有高位密度，最小的形貌和降低的信号噪声。

12. 发明授权

US5798890A Disk drive with identical three-element, side-by-side heads on opposite disk surfaces 失效
标题翻译：磁盘驱动器，在相对的磁盘表面上具有相同的三元件并排磁头
公开(公告)号：US5798890A
公开(公告)日：1998-08-25
申请号：US811490
申请日：1997-03-05
申请人： Robert Edward Fontana, Jr. , Steven Robert Hetzler , Hugo Alberto Emilio Santini , Mason Lamar Williams
发明人： Robert Edward Fontana, Jr. , Steven Robert Hetzler , Hugo Alberto Emilio Santini , Mason Lamar Williams
IPC分类号： G11B5/31 , G11B5/39 , G11B5/48 , G11B21/00 , G11B5/60 , G11B21/21
CPC分类号： G11B5/3967 , G11B21/00 , G11B5/3103 , G11B5/4813 , G11B5/4886 , G11B5/3166 , G11B5/3948
摘要： A magnetic recording disk drive uses side-by-side read/write heads formed on head carriers that are substantially identical for both top and bottom disk surfaces. Thus, a common head carrier functions as a single manufacturable part usable for both top and bottom disk surfaces. The common head carrier has a trailing end with a pattern of components formed on it that includes three side-by-side transducers and sets of terminal pads. In the read/write/read side-by-side head arrangement, the first element is a center write element, such as an inductive coil, and the second and third elements are read elements, such as magnetoresistive read elements, that are generally equally spaced from the center write element. In common carriers to be used for the top disk surfaces, one of the read elements is electrically connected to the read/write channel of the disk drive, and in common carriers to be used for the bottom disk surfaces, the other read element on the common carrier is electrically connected to the read/write channel. The disk drive thus operates in cylinder mode with side-by-side heads using a common carrier for both top and bottom disk surfaces.
摘要翻译：磁记录盘驱动器使用形成在头托架上的并排读/写头，其对于顶盘和底盘表面基本相同。因此，公共的头托架用作可用于顶部和底部盘表面的单个可制造部件。公共头托架具有后端，其上形成有包括三个并排换能器和端子排组的部件图案。在读/写/读并排磁头布置中，第一元件是诸如感应线圈的中心写元件，并且第二和第三元件是读取元件，例如磁阻读取元件，其大致相等与中心写入元件间隔开。在用于顶部磁盘表面的公共载体中，读取元件中的一个电连接到磁盘驱动器的读取/写入通道，并且在用于底部磁盘表面的公共载体中，另一个读取元件公共载体电连接到读/写通道。因此，磁盘驱动器以圆柱模式并行地使用顶部和底部磁盘表面的公共载体。

13. 发明授权

US07116516B2 Magnetic head having write head with helical coil and method for fabrication thereof 失效
标题翻译：具有带螺旋线圈的写头的磁头及其制造方法
公开(公告)号：US07116516B2
公开(公告)日：2006-10-03
申请号：US10611090
申请日：2003-06-30
申请人： Frederick Hayes Dill , Robert Edward Fontana, Jr. , Richard Hsiao , Hugo Alberto Emilio Santini
发明人： Frederick Hayes Dill , Robert Edward Fontana, Jr. , Richard Hsiao , Hugo Alberto Emilio Santini
IPC分类号： G11B5/127
CPC分类号： G11B5/313 , G11B5/012 , G11B5/127 , G11B5/17 , G11B5/3163 , Y10T29/49046
摘要： The present invention is a magnetic head having a helical induction coil and includes hard disk drive devices that utilize the magnetic head. The helical coil is fabricated around a magnetic pole yoke in a series of process steps that include a reactive ion etch (RIE) process step which is utilized to simultaneously form vertical interconnect vias and upper helical coil member trenches. Thereafter, in a single fabrication step, such as by electroplating, the vertical interconnect lines and the upper helical coil traces are created in a single fabrication step, such that they are integrally formed. The vertical interconnect lines provide an electrical connection between outer ends of previously formed lower helical coil traces and outer ends of the integrally formed upper helical coil traces, such that a helical coil is fabricated. In the preferred embodiment, the helical coil is composed of copper.
摘要翻译：本发明是一种具有螺旋感应线圈的磁头，并且包括利用磁头的硬盘驱动装置。在包括反应离子蚀刻（RIE）工艺步骤的一系列工艺步骤中围绕磁极轭制造螺旋线圈，其用于同时形成垂直互连通孔和上部螺旋线圈构件沟槽。此后，在单个制造步骤中，例如通过电镀，在单个制造步骤中产生垂直互连线和上部螺旋线圈迹线，使得它们整体形成。垂直互连线在先前形成的下螺旋线圈迹线的外端和整体形成的上螺旋线圈迹线的外端之间提供电连接，从而制造螺旋线圈。在优选实施例中，螺旋线圈由铜构成。

14. 发明授权

US06188550B1 Self-longitudinally biased magnetoresistive read transducer 失效
标题翻译：自纵向偏置磁阻读取传感器
公开(公告)号：US06188550B1
公开(公告)日：2001-02-13
申请号：US08766383
申请日：1996-12-05
申请人： Robert Edward Fontana, Jr. , Frances Anne Houle , Ching Hwa Tsang
发明人： Robert Edward Fontana, Jr. , Frances Anne Houle , Ching Hwa Tsang
IPC分类号： G11B533
CPC分类号： B82Y25/00 , B82Y40/00 , G01R33/093 , G11B5/3903 , G11B5/3932 , H01F10/324 , H01F41/22 , H01F41/302 , H01F41/34
摘要： A magnetic structure, such as a magnetoresistive sensor, having a continuous multi-region magnetic layer in which the magnetic and electrical characteristics of each region is locally defined. In the preferred embodiment, the continuous multi-region magnetic layer has high coercivity end regions separated by a low coercivity central region.
摘要翻译：诸如磁阻传感器的磁结构具有连续的多区域磁性层，其中局部限定了每个区域的磁特性和电特性。在优选实施例中，连续多区域磁性层具有由低矫顽力中心区域分离的高矫顽力端部区域。

15. 发明授权

US06005753A Magnetic tunnel junction magnetoresistive read head with longitudinal and transverse bias 失效
标题翻译：磁隧道结磁阻读头，具有纵向和横向偏置
公开(公告)号：US06005753A
公开(公告)日：1999-12-21
申请号：US87322
申请日：1998-05-29
申请人： Robert Edward Fontana, Jr. , Stuart Stephen Papworth Parkin , Ching Hwa Tsang
发明人： Robert Edward Fontana, Jr. , Stuart Stephen Papworth Parkin , Ching Hwa Tsang
IPC分类号： G01R33/06 , G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/06 , G11B5/3903 , G11B2005/3996
摘要： A magnetic tunnel junction magnetoresistive read head has one fixed ferromagnetic layer and one generally rectangularly shaped sensing ferromagnetic layer on opposite sides of the tunnel barrier layer, and a biasing ferromagnetic layer located around the side edges and back edges of the sensing ferromagnetic layer. An electrically insulating layer separates the biasing layer from the edges of the sensing layer. The biasing layer is a continuous boundary biasing layer that has side regions and a back region to surround the three edges of the sensing layer. When the biasing layer is a single layer with contiguous side and back regions its magnetic moment can be selected to make an angle with the long edges of the sensing layer. In this manner the biasing layer provides both a transverse bias field to compensate for transverse ferromagnetic coupling and magnetostatic coupling fields acting on the sensing layer to thus provide for a linear response of the head and a longitudinal bias field to stabilize the head. The biasing layer may also be formed with discrete side regions and a back region. The discrete side regions may have a magnetic moment oriented in a different direction from the moment of the back region in order to provide the correct combination of transverse and longitudinal bias fields.
摘要翻译：磁性隧道结磁阻读取头在隧道势垒层的相对侧具有一个固定的铁磁层和一个大致矩形的感测铁磁层，以及位于感测铁磁层的侧边缘和后边缘周围的偏置铁磁层。电绝缘层将偏置层与感测层的边缘分开。偏置层是连续的边界偏置层，其具有围绕感测层的三个边缘的侧面区域和后部区域。当偏置层是具有相邻侧面和后部区域的单层时，其磁矩可以被选择成与感测层的长边缘形成一个角度。以这种方式，偏置层提供横向偏置场以补偿作用在感测层上的横向铁磁耦合和静磁耦合场，从而提供头部的线性响应和纵向偏置场以稳定头部。偏压层也可以形成有离散的侧部区域和后部区域。离散的侧部区域可以具有与从后部区域的力矩不同的方向定向的磁矩，以便提供横向和纵向偏置场的正确组合。

16. 发明授权

US5898547A Magnetic tunnel junction magnetoresistive read head with sensing layer as flux guide 失效
标题翻译：磁性隧道结磁阻读头，传感层作为助焊剂
公开(公告)号：US5898547A
公开(公告)日：1999-04-27
申请号：US957699
申请日：1997-10-24
申请人： Robert Edward Fontana, Jr. , Stuart Stephen Papworth Parkin , Ching Hwa Tsang
发明人： Robert Edward Fontana, Jr. , Stuart Stephen Papworth Parkin , Ching Hwa Tsang
IPC分类号： G11B5/39 , G11B5/40 , G11B5/33
CPC分类号： G11B5/3916 , G11B5/3169 , G11B5/3903 , G11B5/3967 , G11B5/40
摘要： A magnetic tunnel junction (MTJ) magnetoresistive read head for a magnetic recording system has the MTJ sensing or free ferromagnetic layer also functioning as a flux guide to direct magnetic flux from the magnetic recording medium to the tunnel junction. The MTJ fixed ferromagnetic layer has its front edge recessed from the sensing surface of the head. Both the fixed and free ferromagnetic layers are in contact with opposite surfaces of the MTJ tunnel barrier layer but the free ferromagnetic layer extends beyond the back edge of either the tunnel barrier layer or the fixed ferromagnetic layer, whichever back edge is closer to the sensing surface. This assures that the magnetic flux is non-zero in the tunnel junction region. The magnetization direction of the fixed ferromagnetic layer is fixed in a direction generally perpendicular to the sensing surface and thus to the magnetic recording medium, preferably by interfacial exchange coupling with an antiferromagnetic layer. The magnetization direction of the free ferromagnetic layer is aligned in a direction generally parallel to the surface of the medium in the absence of an applied magnetic field and is free to rotate in the presence of applied magnetic fields from the medium. A layer of high coercivity hard magnetic material adjacent the sides of the free ferromagnetic layer longitudinally biases the magnetization of the free ferromagnetic layer in the preferred direction.
摘要翻译：用于磁记录系统的磁隧道结（MTJ）磁阻读取头具有MTJ感测或自由铁磁层，还用作磁通指引，以将磁通量从磁记录介质引导到隧道结。 MTJ固定铁磁层的前缘从头部的感测表面凹陷。固定和自由铁磁层都与MTJ隧道势垒层的相对表面接触，但自由铁磁层延伸超过隧道势垒层或固定铁磁层的后边缘，无论哪个后边缘更靠近感测表面。这确保了隧道结区域中的磁通量不为零。固定铁磁层的磁化方向固定在大致垂直于感测表面的方向上，并因此固定在磁记录介质上，优选地通过与反铁磁层的界面交换耦合。在没有施加的磁场的情况下，自由铁磁层的磁化方向在大致平行于介质的表面的方向上排列，并且在存在来自介质的施加的磁场的情况下自由旋转。邻近自由铁磁层侧面的高矫顽磁性硬磁材料层沿优选方向纵向偏置自由铁磁层的磁化。

17. 发明授权

US5896249A Disk drive with identical top and bottom heads having three side-by-side elements and a common terminal pad 失效
标题翻译：具有相同顶部和底部头部的盘驱动器具有三个并排元件和公共端子垫
公开(公告)号：US5896249A
公开(公告)日：1999-04-20
申请号：US138836
申请日：1998-08-24
申请人： Robert Edward Fontana, Jr. , Steven Robert Hetzler , Hugo Alberto Emilio Santini , Mason Lamar Williams
发明人： Robert Edward Fontana, Jr. , Steven Robert Hetzler , Hugo Alberto Emilio Santini , Mason Lamar Williams
IPC分类号： G11B5/31 , G11B5/39 , G11B5/48 , G11B21/00 , G11B5/60
CPC分类号： G11B5/3967 , G11B21/00 , G11B5/3103 , G11B5/4813 , G11B5/4886 , G11B5/3166 , G11B5/3948
摘要： A magnetic recording disk drive uses side-by-side read/write heads formed on head carriers that are identical for both top and bottom disk surfaces. Thus, a common head carrier functions as a single manufacturable part usable for both top and bottom disk surfaces. The common head carrier has a trailing end with a pattern of components formed on it that includes three side-by-side transducers (two read elements equally spaced about a center write element) and five terminal pads, one of which is a common pad, and all of the electrical connectors interconnecting the five terminal pads with the three transducers. There are only three terminal pads for the two read elements, with one of the read terminal pads being a common terminal pad that is electrically connected to both read elements. During assembly of the disk drive, the common carrier, when used as the top carrier, has a first read terminal pad and the common terminal pad connected to the leads on the suspension. When used as the bottom carrier, the second read terminal pad and the common terminal pad are connected to the leads on the suspension. Thus, only one carrier common to both top and bottom sides of the disk needs to be manufactured. The uniqueness of the top and bottom carriers is obtained by the wiring connection of the read terminal pads to the leads on the suspensions.
摘要翻译：磁记录盘驱动器使用形成在头托架上的并排读/写头，其对于顶盘和底盘表面是相同的。因此，公共的头托架用作可用于顶部和底部盘表面的单个可制造部件。公共头托架具有后端，其上形成有包括三个并排换能器（两个读取元件，围绕中心写入元件等间隔开）的部件图案，以及五个端子焊盘，其中一个是公共焊盘，并且所有电连接器将五个端子焊盘与三个换能器互连。两个读取元件只有三个端子焊盘，其中一个读取端子焊盘是与两个读取元件电连接的公共端子焊盘。在盘驱动器的组装期间，公共载体当用作顶部载体时，具有第一读取端子焊盘，并且公共端子焊盘连接到悬架上的引线。当用作底部载体时，第二读取端子焊盘和公共端子焊盘连接到悬架上的引线。因此，只需要制造一个与磁盘的顶面和底面共同的载体。顶部和底部载体的唯一性是通过将读取的端子焊盘连接到悬架上的引线而获得的。

18. 发明授权

US5867889A Double self-aligned insulated contiguous junction for flux-guided-MR or yoke-MR head applications 失效
标题翻译：用于磁通引导MR或磁轭磁头应用的双自对准绝缘连接结
公开(公告)号：US5867889A
公开(公告)日：1999-02-09
申请号：US829869
申请日：1997-04-01
申请人： Moris Musa Dovek , Robert Edward Fontana, Jr. , Linda Hope Lane , Edward Hin Pong Lee
发明人： Moris Musa Dovek , Robert Edward Fontana, Jr. , Linda Hope Lane , Edward Hin Pong Lee
IPC分类号： G11B5/31 , G11B5/39 , G11B5/127
CPC分类号： G11B5/3912 , G11B5/3163 , G11B5/39 , G11B5/3903 , G11B5/3916 , G11B5/3919 , G11B5/3922 , Y10T29/49043
摘要： A magnetoresistive (MR) head having a double self-aligned contiguous junction includes an MR sensor structure with a biased guide joined thereto. The guide is formed using a first resist mask applied over the MR sensor structure. A guide biasing structure is formed using the first resist mask and a second resist mask applied over the first resist mask and the guide. The first resist mask is configured to form a double self-aligned contiguous junction between the MR sensor structure and the guide and guide bias structure. In this manner, the position of the guide biasing structure is carefully controlled so that it does not overlap the MR sensor structure.
摘要翻译：具有双自对准连续结的磁阻（MR）头包括具有与其连接的偏置引导件的MR传感器结构。使用施加在MR传感器结构上的第一抗蚀剂掩模形成引导件。使用第一抗蚀剂掩模和施加在第一抗蚀剂掩模和引导件上的第二抗蚀剂掩模形成引导偏置结构。第一抗蚀剂掩模被配置为在MR传感器结构和引导和引导偏置结构之间形成双重自对准的连续结。以这种方式，仔细地控制引导偏置结构的位置，使其不与MR传感器结构重叠。

19. 发明授权

US5701223A Spin valve magnetoresistive sensor with antiparallel pinned layer and improved exchange bias layer, and magnetic recording system using the sensor 失效
标题翻译：旋转阀磁阻传感器具有反平行钉扎层和改进的交换偏置层，以及使用传感器的磁记录系统
公开(公告)号：US5701223A
公开(公告)日：1997-12-23
申请号：US697396
申请日：1996-08-23
申请人： Robert Edward Fontana, Jr. , Bruce Alvin Gurney , Tsann Lin , Virgil Simon Speriosu , Ching Hwa Tsang , Dennis Richard Wilhoit
发明人： Robert Edward Fontana, Jr. , Bruce Alvin Gurney , Tsann Lin , Virgil Simon Speriosu , Ching Hwa Tsang , Dennis Richard Wilhoit
IPC分类号： G01R33/09 , G11B5/39 , H01F10/32 , H01L43/10
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/3903 , H01F10/3272 , H01L43/10 , G11B2005/3996
摘要： A spin valve magnetoresistive (SVMR) sensor uses a laminated antiparallel (AP) pinned layer in combination with an improved antiferromagnetic (AF) exchange biasing layer. The pinned layer comprises two ferromagnetic films separated by a nonmagnetic coupling film such that the magnetizations of the two ferromagnetic films are strongly coupled together antiferromagnetically in an antiparallel orientation. This laminated AP pinned layer is magnetically rigid in the small field excitations required to rotate the SVMR sensor's free layer. When the magnetic moments of the two ferromagnetic layers in this AP pinned layer are nearly the same, the net magnetic moment of the pinned layer is small. However, the exchange field is correspondingly large because it is inversely proportional to the net magnetic moment. The laminated AP pinned layer has its magnetization fixed or pinned by an AF material that is highly corrosion resistant but that has an exchange anisotropy too low to be usable in conventional SVMR sensors. In the preferred embodiment the AF layer is nickel-oxide and is formed on one of the magnetoresistive (MR) shields that serves as the substrate. Thus the AF material also serves as the insulating MR gap material. The location of the AF layer and the laminated AP-pinned layer to which it is exchange coupled on the bottom of the SVMR sensor allows for improved longitudinal biasing of the free layer when the SVMR sensor is fabricated.
摘要翻译：自旋阀磁阻（SVMR）传感器使用层叠反平行（AP）钉扎层与改进的反铁磁（AF）交换偏置层组合。被钉扎层包括由非磁性耦合膜分离的两个铁磁膜，使得两个铁磁膜的磁化强烈耦合在反铁磁反向反平行取向。该层压AP钉扎层在旋转SVMR传感器自由层所需的小场激励中是磁性刚性的。当该AP钉扎层中的两个铁磁层的磁矩几乎相同时，被钉扎层的净磁矩小。然而，交换场相当大，因为它与净磁矩成反比。层压的AP钉扎层的磁化固定或由AF材料固定，该材料具有高度耐腐蚀性，但具有太低的交换各向异性，无法在传统的SVMR传感器中使用。在优选实施例中，AF层是氧化镍，并且形成在用作衬底的磁阻（MR）屏蔽之一上。因此，AF材料也用作绝缘MR间隙材料。在SVMR传感器的底部上交换耦合的AF层和层压的AP钉扎层的位置允许在制造SVMR传感器时改善自由层的纵向偏置。

20. 发明授权

US06950260B2 Thermally assisted magnetic recording system and method of writing using magnetic and thermal gradients 有权
标题翻译：热辅助磁记录系统和使用磁和热梯度的写入方法
公开(公告)号：US06950260B2
公开(公告)日：2005-09-27
申请号：US09874673
申请日：2001-06-04
申请人： Kevin Robert Coffey , Robert Edward Fontana, Jr. , Jan-Ulrich Thiele
发明人： Kevin Robert Coffey , Robert Edward Fontana, Jr. , Jan-Ulrich Thiele
IPC分类号： G11B5/02 , G11B5/55 , G11B5/596 , G11B27/36
CPC分类号： G11B5/02 , G11B5/5521 , G11B5/59683
摘要： A magnetic recording system is provided having a write head employing a combination of magnetic write field gradient and thermal gradient to write data on a ‘thermal spring’ magnetic recording media. The write head comprises a magnetic element using a write current to induce a magnetic write field at the magnetic media and a thermal element using a very small aperture laser to heat a portion of the media. The thermal spring magnetic media comprises [comprises] first and second stacks providing two exchange coupled ferromagnetic layers having different Curie temperatures [The first stack has a high magneto-crystalline anisotropy, a relatively low saturation magnetization and a low Curie temperature.] [The second stack has a relatively low magneto-crystalline anisotropy, a high saturation magnetization and a high Curie temperature.] The magnetic field gradient and the thermal gradient are arranged to substantially overlap at the trailing edge of the heated portion of the magnetic media allowing data at high density with high thermal stability to be recorded on the rapidly cooling thermal spring magnetic recording media.
摘要翻译：提供磁记录系统，其具有采用磁写场梯度和热梯度的组合的写头，以在“温度弹簧”磁记录介质上写入数据。写头包括使用写入电流以在磁性介质上引起磁写入场的磁性元件，以及使用非常小的孔径激光器加热介质的一部分的热元件。热弹簧磁介质包括[包括]第一和第二堆叠，提供具有不同居里温度的两个交换耦合铁磁层[第一堆叠具有高磁晶各向异性，相对低的饱和磁化强度和低居里温度]。[第二堆叠具有相对较低的磁晶各向异性，高饱和磁化强度和高居里温度。]磁场梯度和热梯度被布置成在磁介质的加热部分的后缘处基本上重叠，允许高数据具有高热稳定性的密度被记录在快速冷却的热弹簧磁记录介质上。

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