公开(公告)号：US06277484B1

公开(公告)日：2001-08-21

申请号：US09167837

申请日：1998-10-07

申请人： Kazumasa Shimoda ,  Ryoichi Mukai ,  Hiroto Takeshita

发明人： Kazumasa Shimoda ,  Ryoichi Mukai ,  Hiroto Takeshita

IPC分类号： G11B566

CPC分类号： G11B5/66 ,  Y10S428/90 ,  Y10T428/265

摘要： A magnetic recording medium using a substrate, such as a glass substrate, and having, in combination, superior magnetic and magnetic recording properties and good adhesion of a magnetic layer to the substrate. The magnetic recording medium has an intermediate layer of chromium between the substrate and an underlayer of Ni-based non-magnetic material on which a magnetic layer of Co-based magnetic alloy is superimposed. A method of producing the magnetic recording medium is also disclosed, wherein each of the layers is formed by a sputtering process at a sufficient pressure to promote granular growth of crystals of the layer.

摘要翻译： 使用诸如玻璃基板的基板的磁记录介质，并且具有优异的磁记录性能和磁记录性能以及磁性层与基板的良好粘附性。 该磁记录介质在衬底与叠层有Co基磁性合金磁性层的Ni基非磁性材料的底层之间具有铬的中间层。 还公开了一种制造磁记录介质的方法，其中每个层通过溅射工艺在足够的压力下形成以促进该层的晶体的颗粒生长。

公开(公告)号：US06586044B1

公开(公告)日：2003-07-01

申请号：US10256447

申请日：2002-09-27

申请人： Hiroto Takeshita ,  Ryoichi Mukai ,  Wataru Yamagishi

发明人： Hiroto Takeshita ,  Ryoichi Mukai ,  Wataru Yamagishi

IPC分类号： B05D512

CPC分类号： G11B5/72 ,  G11B5/82 ,  G11B5/8408 ,  G11B5/855

摘要： A magnetic hard disk having magnetic tracks for storing data which is read or written by a magnetic head floating immediately above the magnetic track while the magnetic hard disk is rotating, and the magnetic head rests on the magnetic hard disk while the magnetic hard disk is not rotating. One aspect of the present invention is that the magnetic hard disk comprises a non-magnetic substrate having a plurality of banks and grooves alternately and concentrically arranged thereon, a magnetic film formed on each of the banks, and non-magnetic material formed on an entire surface of the substrate all over the banks and grooves such that roughness of the upper surface of the non-magnetic material is in a range between 0.5 nm and 3 nm.

摘要翻译： 一种具有磁道的磁性硬盘，用于存储在磁性硬盘旋转时立即在磁道上方浮动的磁头读取或写入的数据，并且磁头在磁性硬盘不支持时磁头靠在磁性硬盘上 旋转。 本发明的一个方面是磁性硬盘包括一个非磁性基片，它具有交替地同心地布置在其上的多个堤和槽，形成在每个堤上的磁性膜，以及整个形成的非磁性材料 基板的表面遍及堤和槽，使得非磁性材料的上表面的粗糙度在0.5nm和3nm之间的范围内。

公开(公告)号：US06583957B1

公开(公告)日：2003-06-24

申请号：US09468962

申请日：1999-12-22

申请人： Hiroto Takeshita ,  Ryoichi Mukai ,  Wataru Yamagishi

发明人： Hiroto Takeshita ,  Ryoichi Mukai ,  Wataru Yamagishi

IPC分类号： G11B582

CPC分类号： G11B5/72 ,  G11B5/82 ,  G11B5/8408 ,  G11B5/855

摘要： A magnetic hard disk has magnetic tracks for storing data, which is read or written by a magnetic head floating immediately above the magnetic track while the magnetic hard disk is rotating. The magnetic head rests on the magnetic hard disk while the magnetic hard disk is not rotating. The magnetic hard disk comprises a non-magnetic substrate having a plurality of banks and grooves alternately and concentrically arranged thereon, a magnetic film formed on each of the banks, and a non-magnetic material formed on an entire surface of the substrate all over the banks and grooves such that roughness of the upper surface of the non-magnetic material is in a range between 0.5 nm and 3 nm.

摘要翻译： 磁性硬盘具有用于存储数据的磁道，用于在磁性硬盘旋转的同时在磁道正上方浮动的磁头读取或写入数据。 当磁盘不旋转时，磁头靠在磁性硬盘上。 磁性硬盘包括具有交替并同心地布置在其上的多个堤和槽的非磁性基板，在每个堤上形成的磁性膜，以及形成在基板的整个表面上的非磁性材料 堤和凹槽，使得非磁性材料的上表面的粗糙度在0.5nm和3nm之间的范围内。

公开(公告)号：US07732070B2

公开(公告)日：2010-06-08

申请号：US11487508

申请日：2006-07-17

申请人： Ryoichi Mukai

发明人： Ryoichi Mukai

IPC分类号： G11B5/66

CPC分类号： G11B5/732 ,  G11B5/65 ,  G11B5/667 ,  G11B5/7325 ,  G11B5/851

摘要： A perpendicular magnetic recording medium is disclosed that includes a substrate; a soft magnetic underlayer formed on the substrate; a seed layer of an amorphous material formed on the soft magnetic underlayer; an oxidation prevention layer formed on the seed layer; an underlayer formed on the oxidation prevention layer, the underlayer including multiple crystal grains formed of Ru or a Ru alloy having an hcp crystal structure, and a first air gap part configured to separate the crystal grains from each other; and a recording layer formed on the underlayer, the recording layer including multiple magnetic particles having a magnetocrystalline easy axis in a direction substantially perpendicular to the surface of the substrate, and one of a second air gap part and a non-magnetic non-solid-solution phase, the one being configured to separate the magnetic particles from each other. The oxidation prevention layer includes a noble metal element other than Ru.

摘要翻译： 公开了一种包括基板的垂直磁记录介质; 形成在所述基板上的软磁性底层; 形成在软磁性底层上的无定形材料种子层; 形成在种子层上的氧化防止层; 形成在氧化防止层上的底层，包含由Ru形成的多个晶粒的底层或具有hcp晶体结构的Ru合金，以及被配置为将晶粒彼此分离的第一气隙部分; 以及形成在所述底层上的记录层，所述记录层包括在基本上垂直于所述基板的表面的方向上具有易磁化轴的多个磁性颗粒，以及第二气隙部分和非磁性非固体磁体之一， 溶液相，其被配置为将磁性颗粒彼此分离。 氧化防止层包括除Ru以外的贵金属元素。

公开(公告)号：US07270897B2

公开(公告)日：2007-09-18

申请号：US10008713

申请日：2001-12-07

申请人： Ryoichi Mukai

发明人： Ryoichi Mukai

IPC分类号： G11B5/66 ,  G11B5/70

CPC分类号： G11B5/656 ,  G11B5/84

摘要： A higher value of an anistropic magnetic feild can be acquired by using a magnetic material where Cr is not added as a material of a magnetic layer on which magnetic data is recorded. A magnetic recording medium can be manufactured through the processes of laminating an underlayer cosisting opf Cr-based non-magnetic material on a substrate, and then laminating, on this underlayer, a magnetic layer consisting of an alloy of at least one kind of non-magnetic material that is different from Cr and Co.

摘要翻译： 通过使用不添加Cr的磁性材料作为记录有磁性数据的磁性层的材料，可以获得较高的无关性磁性值。 可以通过将基于Cr的非磁性材料的下层层叠层叠在基板上的方法制造磁记录介质，然后在该底层上层叠由至少一种非磁性材料的合金构成的磁性层， 与Cr和Co.不同的磁性材料

公开(公告)号：US20060222902A1

公开(公告)日：2006-10-05

申请号：US11388547

申请日：2006-03-24

申请人： Ryoichi Mukai

发明人： Ryoichi Mukai

IPC分类号： G11B5/66 ,  C23C14/00

CPC分类号： G11B5/851 ,  G11B5/66 ,  G11B5/7325 ,  G11B5/7379

摘要： A perpendicular magnetic recording medium for enabling high density recording is disclosed. The perpendicular magnetic recording medium includes a substrate on which a soft magnetic underlayer, a seed layer made of a non-crystalline material, an underlayer made of Ru or an Ru alloy including Ru as a main component, and a recording layer including a first magnetic layer and a second magnetic layer. The first and second magnetic layers include a plurality of magnetic grains having easy magnetization axes in a substantially perpendicular direction with respect to the substrate surface, and first and second nonmagnetic non-soluble phases segregating the magnetic grains of the first and second magnetic layers, respectively. The first magnetic layer includes the first non-soluble phase at a first atomic concentration that is higher than a second atomic concentration of the second non-soluble phase in the second magnetic layer.

摘要翻译： 公开了用于实现高密度记录的垂直磁记录介质。 垂直磁记录介质包括其上由软磁性底层，由非结晶材料制成的种子层，由Ru制成的底层或包含Ru作为主要成分的Ru合金的基板，以及包括第一磁性层 层和第二磁性层。 第一和第二磁性层包括相对于衬底表面在基本垂直的方向上具有容易的磁化轴的多个磁性颗粒以及分别分离第一和第二磁性层的磁性颗粒的第一和第二非磁性不溶性相 。 第一磁性层包括第一原子浓度的第一非溶解相，其高于第二磁性层中第二非可溶相的第二原子浓度。

公开(公告)号：US06171676B2

公开(公告)日：2001-01-09

申请号：US08800916

申请日：1997-02-13

申请人： Ryoichi Mukai ,  Kazunori Yamanaka ,  Kazuo Kobayashi

发明人： Ryoichi Mukai ,  Kazunori Yamanaka ,  Kazuo Kobayashi

IPC分类号： G11B566

CPC分类号： G11B5/65 ,  G11B5/851 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/265

摘要： A magnetic recording medium has a substrate of a disk shape having a non-magnetic surface and a through hole formed at the central area of the substrate, and a plurality of dispersed island regions made of magnetic material and directly formed on the non-magnetic surface. The size of each of the island regions is a single magnetic domain size or finer of the magnetic material. The island regions are formed by cohering atoms of a magnetic film formed by sputtering.

摘要翻译： 磁记录介质具有形成在基板的中心区域的具有非磁性表面和通孔的盘形基板，以及由磁性材料制成并直接形成在非磁性表面上的多个分散的岛状区域 。 每个岛区域的尺寸是磁性材料的单个磁畴尺寸或更细的。 岛区域是由通过溅射形成的磁性膜的原子共同构成的。

公开(公告)号：US5110759A

公开(公告)日：1992-05-05

申请号：US737910

申请日：1991-07-26

申请人： Ryoichi Mukai

发明人： Ryoichi Mukai

IPC分类号： H01L21/768

CPC分类号： H01L21/76879

摘要： In a conductive plug forming method, a conductor layer is formed on the main surface of an insulator layer, only in the vicinity of a plurality of adjacent via holes in which plugs are to be formed, the conductor layer having a periphery defining a boundary encompassing the plurality of adjacent via holes. The volume of the material of the conductor layer within the boundary is of a predetermined amount, ranging from a minimum volume approximately equal to, to a maximum volume approximately equal to two times the total interior volume of the via holes. An energy beam is irradiated on the conductor layer to melt the conductor layer, so that the melted conductor material of the conductor layer flows toward and into the via holes, thereby forming a conductive plug in each of the via holes and without leaving any conductor layer material on the main surface of the substrate. The plurality of adjacent via holes may include at least first and second via holes of the same or different volume, and which may have the same or different depths in the insulator layer and/or areas in the plane of the main surface of the insulator layer. Multiple layer structures are disclosed which provide multiple layer interconnects and also include selectively positioned, reflective and/or energy absorptive layers for facilitating and selectively controlling the melting of the conductor layer while protecting other layers exposed to and irradiated by and/or otherwise heated by the irradiating energy beam.

摘要翻译： 在导电插塞形成方法中，导体层形成在绝缘体层的主表面上，仅在要形成插塞的多个相邻的通孔附近，导体层具有限定边界的周边 多个相邻的通孔。 在边界内的导体层的材料的体积是从最小体积大约等于最大体积大约相当于通孔总内部体积的两倍的预定量。 能量束被照射在导体层上以熔化导体层，使得导体层的熔化的导体材料流向通孔，从而在每个通孔中形成导电塞，而不留下任何导体层 在基板的主表面上的材料。 多个相邻的通孔可以包括相同或不同体积的至少第一和第二通孔，并且其可以在绝缘体层和/或绝缘体层的主表面的平面中的区域中具有相同或不同的深度 。 公开了提供多层互连的多层结构，并且还包括选择性定位的，反射的和/或能量的吸收层，用于促进和选择性地控制导体层的熔化，同时保护暴露于和/或由其加热的其它层 照射能量束。

公开(公告)号：US4551907A

公开(公告)日：1985-11-12

申请号：US554544

申请日：1983-11-23

申请人： Ryoichi Mukai

发明人： Ryoichi Mukai

IPC分类号： H01L29/78 ,  H01L21/28 ,  H01L21/3205 ,  H01L21/321 ,  H01L21/768 ,  H01L23/52 ,  H01L21/24

CPC分类号： H01L21/76889 ,  H01L21/28 ,  H01L21/321

摘要： A metal silicide interconnection technique selectively forming a metal silicide layer on a silicon layer followed by heat treating the layers so that a surface silicon dioxide layer is formed and the metal silicide layer is forced down and is buried under the silicon dioxide layer. This silicon dioxide layer has an even top surface.

摘要翻译： 一种金属硅化物互连技术，在硅层上选择性地形成金属硅化物层，随后对这些层进行热处理，从而形成表面二氧化硅层，并且将金属硅化物层压下并埋在二氧化硅层下面。 该二氧化硅层具有均匀的顶表面。

公开(公告)号：US07799446B2

公开(公告)日：2010-09-21

申请号：US12024418

申请日：2008-02-01

申请人： Ryoichi Mukai

发明人： Ryoichi Mukai

IPC分类号： G11B5/66

CPC分类号： G11B5/7325

摘要： A perpendicular magnetic recording medium comprises a soft-magnetic backing layer formed on a substrate, an orientation control layer formed on the soft-magnetic backing layer, a first foundation layer of a continuous film of Ru or a Ru alloy formed on the orientation control layer, a second foundation layer including a plurality of crystal grains of Ru or a Ru alloy formed on the first foundation layer with a gap separating the plurality of crystal grains from each other, and a recording layer including a plurality of magnetic particles formed on the second foundation layer respectively in correspondence to the plurality of crystal grains, each of the magnetic particles having an easy axis of magnetization in a direction generally perpendicular to a substrate surface, and a non-magnetic grain boundary phase isolating said plurality of magnetic particles from each other, wherein the first foundation layer comprises a plurality of crystal grains formed in contact with each other at respective grain boundaries, one of the plurality of crystal grains constituting the second foundation layer being formed in correspondence to one of the plurality of crystal grains constituting the first foundation layer, and wherein there are provided a plurality of nuclei at an interface between the crystal grain of the second foundation layer corresponding to the one crystal grain of the plurality of crystal grains constituting the first foundation layer and the orientation control layer.

摘要翻译： 垂直磁记录介质包括形成在基板上的软磁背衬层，形成在软磁背衬层上的取向控制层，形成在取向控制层上的Ru或Ru合金的连续膜的第一基础层 形成有第一基础层上形成有多个晶粒的Ru或Ru合金的第二基底层，其间形成有使多个晶粒彼此分离的间隙，以及包含形成在第二基底层上的多个磁性粒子的记录层 基体层分别对应于多个晶粒，每个磁性颗粒在大致垂直于基板表面的方向上具有易磁化轴，以及将所述多个磁性颗粒彼此隔离的非磁性晶界相 ，其中所述第一基础层包括彼此接触形成的多个晶粒， 构成第二基础层的多个晶粒中的一个晶粒与构成第一基础层的多个晶粒中的一个相对应地形成，并且其中在晶粒之间的界面处设置有多个核 对应于构成第一基础层的多个晶粒的一个晶粒和取向控制层的第二基础层。