公开(公告)号：WO1998006093A1

公开(公告)日：1998-02-12

申请号：PCT/JP1996002198

申请日：1996-08-05

Applicant: HITACHI, LTD. ,  KANBE, Tetsuya ,  KATAOKA, Hiroyuki ,  TAMAI, Ichiro ,  HOSOE, Yuzuru ,  ISHIKAWA, Akira ,  TANAHASHI, Kiwamu ,  MATSUDA, Yoshibumi ,  YAMAMOTO, Tomoo

Inventor： HITACHI, LTD.

IPC: G11B05/66

CPC classification number: G11B5/7325 ,  G11B5/012 ,  G11B5/39 ,  G11B5/66

Abstract: A magnetic storage device provided with a magnetic recording medium having a magnetic layer formed on a single or plural base layers, a driving section which drives the medium in the recording direction, a magnetic head including a recording section and a reproducing section, means which moves the magnetic head relatively to the medium, and recording and reproducing signal processing means which inputs signals to the head and reproduces signals outputted form the head. The reproducing section of the magnetic head is a magnetoresistance effect magnetic head. The single base layer or one of the base layers of the recording medium is made of an alloy material composed mainly of at least one element selected from among a first group of Cr, Mo, V and Ta and at least one element selected from among a second group of B, C, P, and Bi. Thus, a highly reliable magnetic storage device which records information at a high density and reproduces it is obtained.

Abstract translation: 一种磁存储装置，其具有磁记录介质，所述磁记录介质具有形成在单个或多个基底层上的磁性层，驱动部分，其在记录方向上驱动介质，磁头包括记录部分和再现部分， 磁头相对于介质，以及记录和再现信号处理装置，其向头部输入信号并再现从头部输出的信号。 磁头的再现部分是磁阻效应磁头。 单个基层或记录介质的一个基层由主要由选自第一组Cr，Mo，V和Ta中的至少一种元素组成的合金材料和选自以下的至少一种元素制成： 第二组B，C，P和Bi。 因此，获得以高密度记录信息并再现它的高度可靠的磁存储装置。

公开(公告)号：WO1996037886A1

公开(公告)日：1996-11-28

申请号：PCT/JP1996001372

申请日：1996-05-23

Applicant: SONY CORPORATION ,  UCHIYAMA, Hiroshi

Inventor： SONY CORPORATION

IPC: G11B05/66

CPC classification number: G11B5/735 ,  G11B5/72 ,  Y10S428/90 ,  Y10T428/24975 ,  Y10T428/265 ,  Y10T428/30 ,  Y10T428/3154 ,  Y10T428/31544 ,  Y10T428/31678

Abstract: A magnetic recording medium prepared by forming a magnetic layer comprising metallic magnetic material on the surface of a nonmagnetic support, the magnetic layer being coated with a protective layer while the rear of the support being coated with a backcoating layer. The protective layer is a thin film mainly comprising carbon and containing 5-20 atomic % hydrogen, and so is the backcoating layer. As a result, this recording medium combines excellent sliding characteristics with durability.

Abstract translation: 一种磁记录介质，其通过在非磁性载体的表面上形成包含金属磁性材料的磁性层而制备，所述磁性层被涂覆有保护层，而载体的后部涂覆有背涂层。 保护层是主要包含碳并含有5-20原子％氢的薄膜，背涂层也是如此。 结果，该记录介质具有优异的滑动特性和耐久性。

公开(公告)号：WO1996029697A1

公开(公告)日：1996-09-26

申请号：PCT/US1996003793

申请日：1996-03-20

Applicant: CENSTOR CORPORATION

Inventor： CENSTOR CORPORATION

IPC: G11B05/66

CPC classification number: G11B5/7325 ,  G11B5/3106 ,  G11B5/8404 ,  Y10T428/24355

Abstract: An electromagnetic read/write system includes a contact interface formed by a pole-structure-carrying wear pad (30) and a recording surface (12). The uppermost portion of the recording surface is characterized by a buffed, generally planarized topography. Lower elevations of the recording surface may be texturized or untexturized. Various methods of producing such an interface are described.

Abstract translation: 电磁读/写系统包括由极结构承载耐磨垫（30）和记录表面（12）形成的接触界面。 记录表面的最上部分的特征在于抛光的，通常为平面的形貌。 记录表面的较低高度可以是纹理化的或未被变形的。 描述了生产这种界面的各种方法。

公开(公告)号：WO1995003604A1

公开(公告)日：1995-02-02

申请号：PCT/US1994007692

申请日：1994-07-15

Applicant: NONVOLATILE ELECTRONICS, INCORPORATED

Inventor： NONVOLATILE ELECTRONICS, INCORPORATED ,  DAUGHTON, James, M.

IPC: G11B05/66

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3906 ,  G11B2005/3996 ,  G11C11/15 ,  H01F10/32 ,  H01F10/324 ,  H01F10/3254 ,  H01F10/3268 ,  H01L43/08 ,  Y10S428/90 ,  Y10T428/1121 ,  Y10T428/12611 ,  Y10T428/12625 ,  Y10T428/26 ,  Y10T428/265

Abstract: A composite film (F'1) on a substrate (11) having a first magnetostrictive, magnetoresistive, anisotropic ferromagnetic thin-film (F' ) provided on that substrate with a second ferromagnetic thin-film (11") provided immediately thereon which is also magnetorestrictive, magnetoresistive, anisotropic, with a composition differing from the first ferromagnetic thin-film (F' ). Various parameters of said first and second ferromagnetic thin-films (F' , F' ) are selected to provide such a composite film (F' ) with little or no magnetostriction. Such composite films can be used in various devices (figs 4 and 5).

Abstract translation: 在具有第二铁磁性薄膜（11“）的基板上设置有具有第一磁致伸缩磁阻，各向异性铁磁性薄膜（F'<1-1>）的基板（11）上的复合膜（F'1） 立即在其上提供也具有不同于第一铁磁薄膜（F'<1-2>）的组成的磁致伸缩，磁阻，各向异性的所有第一和第二铁磁性薄膜（F'<1- 1'，F'<1-2>），以提供很少或没有磁致伸缩的这种复合膜（F'1）。这种复合膜可用于各种装置（图4和图5）。

公开(公告)号：WO1989003112A1

公开(公告)日：1989-04-06

申请号：PCT/US1988003453

申请日：1988-10-01

Applicant: DIGITAL EQUIPMENT CORPORATION

Inventor： DIGITAL EQUIPMENT CORPORATION ,  MALLARY, Michael, L.

IPC: G11B05/66

CPC classification number: G11B5/66

Abstract: The magnetic medium includes a soft magnetic layer separated from the hard magnetic recording layer by a nonmagnetic buffer layer. Virtual magnetic images induced in the soft magnetic layer reduce off-track magnetization seen by the recording head. Thus, interference caused by tracks adjacent to the track being read is reduced.

Abstract translation: 磁介质包括通过非磁性缓冲层与硬磁记录层分离的软磁性层。 在软磁层中感应的虚拟磁图像减少由记录头看到的偏磁磁化。 因此，减少了与被读取的轨道相邻的轨道引起的干扰。

公开(公告)号：WO1998044491A1

公开(公告)日：1998-10-08

申请号：PCT/JP1997001092

申请日：1997-03-28

Applicant: TAKAHASHI, Migaku ,  KIKUCHI, Akira

IPC: G11B05/66

CPC classification number: G11B5/7325 ,  G11B5/64 ,  G11B5/656 ,  G11B5/66 ,  Y10S428/90 ,  Y10T428/265

Abstract: A magnetic recording medium having a high normalized coercive force of a ferromagnetic metal layer and excellent S/N ratio and adaptable to high density recording. The magnetic recording medium comprises a substrate and a Co-based ferromagnetic metal layer formed thereon via a metallic underlying layer. The oxygen concentrations in the metallic underlying layer and in the ferromagnetic metal layer are not larger that 100 wt. ppm. Magnetic inversion is used for the recording. The value of 4 pi Ms/Hk is smaller than 1, where Ms is the saturation magnetization of the ferromagnetic metal layer and Hk is the anisotropic magnetic field of the individual crystalline particles. It is preferable that the size of the individual crystalline particles constituting the ferromagnetic metal layer is not larger than 10 nm.

Abstract translation: 具有强磁性金属层的高归一化矫顽力的磁记录介质，S / N比优异，适用于高密度记录。 磁记录介质包括经由金属底层在其上形成的基底和Co基强磁性金属层。 金属底层和强磁性金属层中的氧浓度不大于100wt。 PPM。 磁反转用于记录。 4 pi Ms / Hk 的值小于1，其中Ms是强磁性金属层的饱和磁化强度，Hk 是各结晶颗粒的各向异性磁场。 构成强磁性金属层的各结晶粒子的尺寸优选为10nm以下。

公开(公告)号：WO1998016923A1

公开(公告)日：1998-04-23

申请号：PCT/US1997002169

申请日：1997-02-26

Applicant: SEAGATE TECHNOLOGY ,  CHEN, Qixu ,  CHANG, Jyh-Kau ,  LEU, Charles ,  CHEN, Ga-Lane

Inventor： SEAGATE TECHNOLOGY

IPC: G11B05/66

CPC classification number: G11B5/732 ,  G11B5/7325

Abstract: A magnetic recording medium is formed by depositing a Cr-containing sub-underlayer (52A) on a surface oxidized seed layer, such as NiP (51A) with direct current (DC) magnetron sputtering, depositing an NiAl or FeAl underlayer (53A) on the sub-underlayer, and depositing a Cr-containing intermediate layer (54A) on the NiAl or FeAl underlayer. The medium features high coercivity, low noise, and (200)-dominant underlayer crystallographic orientation, even with sub-underlayer deposition at temperatures as low as about 25 DEG C. The medium is suitable for high density longitudinal magnetic recording.

Abstract translation: 通过在直流（DC）磁控溅射上沉积NiAl或FeAl底层（53A）的NiP（51A）表面氧化种子层上沉积含Cr的亚底层（52A），形成磁记录介质 所述亚底层，以及在所述NiAl或FeAl底层上沉积含Cr的中间层（54A）。 该介质具有高矫顽力，低噪声和（200）优势的底层结晶取向，即使在低至约25℃的低底层沉积下也是如此。该介质适用于高密度纵向磁记录。

公开(公告)号：WO1998006094A1

公开(公告)日：1998-02-12

申请号：PCT/US1997013613

申请日：1997-08-04

Applicant: AMPEX CORPORATION

Inventor： AMPEX CORPORATION ,  COUGHLIN, Thomas, M.

IPC: G11B05/66

CPC classification number: G11B5/851 ,  G11B5/66 ,  Y10S428/90

Abstract: A magnetic storage medium comprises a keeper layer of soft magnetic, saturable material disposed upon a magnetic storage layer. The keeper layer is disposed above the magnetic storage layer, and a non-magnetic "break" layer may be used between the keeper and the storage layer to reduce the exchange coupling between these layers. To increase the ability of the keeper layer to shunt flux from the magnetic storage layer, a longitudinal anisotropy is induced in the keeper layer. This establishes a desired magnetic orientation of the keeper which facilitates maintaining the regularity (i.e., relative uniformity) of the transitions, and reducing the magnetic interaction between transitions as the spacing between transitions is reduced to provide denser media. Specifically, the longitudinal anisotropy may be oriented either circumferentially or radially relative to the plane of rotation of the magnetic storage layer.

Abstract translation: 磁存储介质包括设置在磁存储层上的软磁可饱和材料的保持层。 保持层设置在磁存储层上方，并且可以在保持器和存储层之间使用非磁性“断裂”层，以减少这些层之间的交换耦合。 为了增加保持层从磁存储层分流磁通的能力，在保持层中引起纵向各向异性。 这建立了保持器的期望的磁性取向，其有助于保持转变的规则性（即，相对均匀性），并且当转换之间的间隔减小时减小转换之间的磁性相互作用，以提供更密集的介质。 具体地，纵向各向异性可以相对于磁性存储层的旋转平面圆周地或径向地取向。

公开(公告)号：WO1997026650A1

公开(公告)日：1997-07-24

申请号：PCT/US1996020153

申请日：1996-12-23

Applicant: SEAGATE TECHNOLOGY

Inventor： SEAGATE TECHNOLOGY ,  CHEN, Ga-Lane ,  CHEN, Qixu

IPC: G11B05/66

CPC classification number: G11B5/732 ,  G11B5/656 ,  G11B5/7325 ,  G11B5/8404 ,  Y10S428/90 ,  Y10S428/928 ,  Y10T428/12465 ,  Y10T428/12819 ,  Y10T428/12847 ,  Y10T428/12854 ,  Y10T428/12944 ,  Y10T428/24355 ,  Y10T428/24975 ,  Y10T428/265 ,  Y10T428/31678

Abstract: A magnetic recording medium having low medium noise and suitable for high density magnetic recording is produced with a bicrystal cluster magnetic layer (33) on a glass or glass-ceramic substrate (30). An underlayer (32) which is formed with a (200) crystallographic orientation induces the formation of a bicrystal cluster microstructure in a magnetic alloy layer (33) epitaxially grown on the underlayer.

Abstract translation: 在玻璃或玻璃陶瓷基板（30）上用双晶簇磁性层（33）制造具有低介质噪声且适用于高密度磁记录的磁记录介质。 形成（200）结晶取向的底层（32）在外层生长在底层上的磁性合金层（33）中诱导形成双晶簇微结构。

公开(公告)号：WO1996024927A1

公开(公告)日：1996-08-15

申请号：PCT/US1996001364

申请日：1996-02-01

Applicant: CONNER PERIPHERALS, INC.

Inventor： CONNER PERIPHERALS, INC. ,  TANG, Xiaoxia ,  CHEN, Ga-Lane

IPC: G11B05/66

CPC classification number: G11B5/3967 ,  G11B5/1278 ,  G11B5/3903 ,  G11B5/66 ,  G11B2005/0016 ,  G11B2005/0029 ,  Y10S428/90 ,  Y10S428/928 ,  Y10T428/12465 ,  Y10T428/12632 ,  Y10T428/12861 ,  Y10T428/12875 ,  Y10T428/24975 ,  Y10T428/265

Abstract: The present invention relates to improved multi-layer magnetic recording media and magnetoresistive drive systems incorporating the same. In particular, multi-layer media including alternating layers of cobalt or cobalt alloys and a precious metal, such as palladium or platinum, and a process to manufacture such media, are disclosed. Media in accordance with the invention generally include a substrate, a nucleating layer, a lattice, and a protective layer. In certain embodiments, the substrate is polished aluminum. In other embodiments, the thickness of the nucleating layer is thicker than 100 ANGSTROM , and in certain embodiments between about 200 and about 600 ANGSTROM . The lattice, generally includes bilayers of cobalt (or an alloy thereof) and palladium or platinum. The thickness of the cobalt layers are between about 1.5 ANGSTROM and 10 ANGSTROM , or between about 2 ANGSTROM and 7 ANGSTROM , or between about 3 ANGSTROM and 5 ANGSTROM . The thickness of the palladium or platinum layers are between about 5 ANGSTROM and 15 ANGSTROM , or between about 7 ANGSTROM and 12 ANGSTROM , or between about 8 ANGSTROM and 11 ANGSTROM . The number of layers in the lattice (33), or its periodicity, is between about 10 and 30 or between about 15 and 25. In certain embodiments, the thickness of the lattice (33) and the nucleating layer (32) do not exceed 1500 ANGSTROM . The invention also provides a novel information storage device that includes a ring write head and a magnetoresistive (MR) read head in combination with a vertical recording media with perpendicular anisotropy exceeding 2 X 10 erg/cc and coercivity as high as 5000 Oe. Also provided is an improved MR read head. The improvement includes a physical offset in the MR element, such that the element is offset from perpendicular to the media.

Abstract translation: 本发明涉及改进的多层磁记录介质和结合其的磁阻驱动系统。 特别地，公开了包括钴或钴合金的交替层和贵金属如钯或铂的多层介质以及制造这种介质的方法。 根据本发明的介质通常包括基底，成核层，晶格和保护层。 在某些实施例中，基底是抛光铝。 在其它实施方案中，成核层的厚度比100厚，在某些实施方案中为约200至约600。 晶格通常包括钴（或其合金）和钯或铂的双层。 钴层的厚度介于约1.5安培和10安培之间，或介于约2安格姆与7安士之间，或约3安格姆和5安士之间。 钯或铂层的厚度在约5 ANGSTROM和15 ANGSTROM之间，或介于约7 ANGSTROM和12 ANGSTROM之间，或介于约8 ANGSTROM和11 ANGSTROM之间。 晶格（33）中的层数或其周期为约10至30或约15至25之间。在某些实施例中，晶格（33）和成核层（32）的厚度不超过 1500 ANGSTROM。 本发明还提供了一种新颖的信息存储装置，其包括环形写入头和磁阻（MR）读取头，其结合垂直记录介质，垂直各向异性超过2×10 6 / g / cc，矫顽力高达5000Oe 。 还提供了改进的MR读取头。 该改进包括MR元件中的物理偏移，使得元件与介质垂直偏移。