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1.发明申请公开(公告)号：US20120154948A1
公开(公告)日：2012-06-21
申请号：US12975197
申请日：2010-12-21
申请人： Ichiro Tamai , Yotsuo Yahisa , Akemi Hirotsune , Kiwamu Tanahashi
发明人： Ichiro Tamai , Yotsuo Yahisa , Akemi Hirotsune , Kiwamu Tanahashi
CPC分类号： G11B5/65 , G11B5/667 , G11B5/732 , G11B5/7325
摘要： In one embodiment, a perpendicular magnetic recording medium includes a substrate, a soft-magnetic underlayer above the substrate, a seed layer above the soft-magnetic underlayer, a first intermediate layer above the seed layer, a second intermediate layer above the first intermediate layer, a recording layer above the second intermediate layer, and a protective layer above the recording layer. The second intermediate layer includes an Ru alloy having an element selected from a group consisting of: Ti in a range from about 20 at. % to about 50 at. %, Nb in a range from about 20 at. % to about 50 at. %, Al in a range from about 20 at. % to about 40 at. %, Ta in a range from about 30 at. % to about 50 at. %, and Si in a range about 20 at. % to about 40 at. %. Other magnetic media and systems using this media are described according to more embodiments.
摘要翻译： 在一个实施例中，垂直磁记录介质包括基底，在基底上方的软磁性底层，软磁性底层上方的晶种层，种子层上方的第一中间层，第一中间层上方的第二中间层 ，第二中间层上方的记录层和记录层上方的保护层。 第二中间层包括具有选自以下的元素的Ru合金：Ti为约20at。 ％至约50。 ％，Nb在约20英寸的范围内。 ％至约50。 ％，Al在约20英寸的范围内。 ％至约40 at。 ％，Ta在约30 at范围内。 ％至约50。 ％，Si在约20at。 ％至约40 at。 ％。 根据更多实施例描述使用该介质的其它磁性介质和系统。
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2.发明申请PERPENDICULAR MAGNETIC RECORDING MEDIUM (PMRM) AND MAGNETIC STORAGE SYSTEMS USING THE SAME 审中-公开全磁磁记录介质（PMRM）和使用其的磁性存储系统公开(公告)号：US20120044595A1
公开(公告)日：2012-02-23
申请号：US12861725
申请日：2010-08-23
申请人： Yotsuo Yahisa , Ichiro Tamai , Akemi Hirotsune
发明人： Yotsuo Yahisa , Ichiro Tamai , Akemi Hirotsune
CPC分类号： G11B5/7325
摘要： In one embodiment, a perpendicular magnetic recording medium (PMRM) includes a first interlayer comprising Ru or a Ru alloy, a second interlayer above the first interlayer comprising Ru or a Ru alloy, and a third interlayer formed between the first interlayer and the second interlayer that reduces an average cluster size of the second interlayer. In another embodiment, a PMRM includes a first interlayer comprising Ru or a Ru alloy, a second interlayer above the first interlayer comprising Ru or a Ru alloy, and a third interlayer formed between the first interlayer and the second interlayer that reduces an average cluster size of the second interlayer. The third interlayer has a thickness of between about 1.0 nm and about 3.0 nm and has a structure selected from a group consisting of: BCC, B2, C11b, L21, and D03. Other PMRMs and methods of fabrication are presented as well.
摘要翻译： 在一个实施方案中，垂直磁记录介质（PMRM）包括包含Ru或Ru合金的第一中间层，包含Ru或Ru合金的第一中间层上的第二中间层，以及在第一中间层和第二中间层之间形成的第三中间层 这降低了第二夹层的平均簇尺寸。 在另一个实施方案中，PMRM包括包含Ru或Ru合金的第一中间层，包含Ru或Ru合金的第一中间层上的第二中间层，以及形成在第一中间层和第二中间层之间的第三中间层，其降低平均簇尺寸 的第二中间层。 第三中间层的厚度为约1.0nm至约3.0nm，并且具有选自由BCC，B2，C11b，L21和D03组成的组的结构。 还提出了其他PMRM和制造方法。
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3.发明授权Perpendicular magnetic recording media having low medium noise and systems using the same 有权具有低介质噪声的垂直磁记录介质和使用其的系统公开(公告)号：US08592060B2
公开(公告)日：2013-11-26
申请号：US12975197
申请日：2010-12-21
申请人： Ichiro Tamai , Yotsuo Yahisa , Akemi Hirotsune , Kiwamu Tanahashi
发明人： Ichiro Tamai , Yotsuo Yahisa , Akemi Hirotsune , Kiwamu Tanahashi
IPC分类号： G11B5/66
CPC分类号： G11B5/65 , G11B5/667 , G11B5/732 , G11B5/7325
摘要： In one embodiment, a perpendicular magnetic recording medium includes a substrate, a soft-magnetic underlayer above the substrate, a seed layer above the soft-magnetic underlayer, a first intermediate layer above the seed layer, a second intermediate layer above the first intermediate layer, a recording layer above the second intermediate layer, and a protective layer above the recording layer. The second intermediate layer includes an Ru alloy having an element selected from a group consisting of: Ti in a range from about 20 at. % to about 50 at. %, Nb in a range from about 20 at. % to about 50 at. %, Al in a range from about 20 at. % to about 40 at. %, Ta in a range from about 30 at. % to about 50 at. %, and Si in a range about 20 at. % to about 40 at. %. Other magnetic media and systems using this media are described according to more embodiments.
摘要翻译： 在一个实施例中，垂直磁记录介质包括基底，在基底上方的软磁性底层，软磁性底层上方的晶种层，种子层上方的第一中间层，第一中间层上方的第二中间层 ，第二中间层上方的记录层和记录层上方的保护层。 第二中间层包括具有选自以下的元素的Ru合金：Ti为约20at。 ％至约50。 ％，Nb在约20英寸的范围内。 ％至约50。 ％，Al在约20英寸的范围内。 ％至约40 at。 ％，Ta在约30 at范围内。 ％至约50。 ％，Si在约20at。 ％至约40 at。 ％。 根据更多实施例描述使用该介质的其它磁性介质和系统。
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4.发明申请公开(公告)号：US20120087034A1
公开(公告)日：2012-04-12
申请号：US12903135
申请日：2010-10-12
申请人： Akemi Hirotsune , Yotsuo Yahisa , Ichiro Tamai
发明人： Akemi Hirotsune , Yotsuo Yahisa , Ichiro Tamai
CPC分类号： G11B5/82 , G11B5/732 , G11B5/7325
摘要： According to one embodiment, a perpendicular magnetic recording medium includes a soft magnetic underlayer formed above a substrate, a lower seed layer formed above the soft magnetic underlayer, at least one upper seed layer formed above the lower seed layer, an interlayer formed above the at least one upper seed layer, a perpendicular recording layer formed above the interlayer, and a protective layer formed above the perpendicular recording layer, wherein the at least one upper seed layer comprises Ni or a Ni based alloy including N, and wherein the lower seed layer includes Ni and at least one element selected from a group consisting of: W and Cr. Other embodiments are described herein regarding perpendicular magnetic recording systems and methods of producing perpendicular magnetic media.
摘要翻译： 根据一个实施例，垂直磁记录介质包括形成在基底上方的软磁性底层，形成在软磁性底层上方的下部种子层，形成在下部种子层上方的至少一个上部种子层， 至少一个上部种子层，形成在中间层上方的垂直记录层和形成在垂直记录层上方的保护层，其中至少一个上部种子层包含Ni或包含N的Ni基合金，并且其中下部种子层 包括Ni和选自由W和Cr组成的组中的至少一种元素。 本文描述了关于垂直磁记录系统和产生垂直磁性介质的方法的其它实施例。
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5.发明授权公开(公告)号：US08703307B2
公开(公告)日：2014-04-22
申请号：US12903135
申请日：2010-10-12
申请人： Akemi Hirotsune , Yotsuo Yahisa , Ichiro Tamai
发明人： Akemi Hirotsune , Yotsuo Yahisa , Ichiro Tamai
IPC分类号： G11B5/66
CPC分类号： G11B5/82 , G11B5/732 , G11B5/7325
摘要： According to one embodiment, a perpendicular magnetic recording medium includes a soft magnetic underlayer formed above a substrate, a lower seed layer formed above the soft magnetic underlayer, at least one upper seed layer formed above the lower seed layer, an interlayer formed above the at least one upper seed layer, a perpendicular recording layer formed above the interlayer, and a protective layer formed above the perpendicular recording layer, wherein the at least one upper seed layer comprises Ni or a Ni based alloy including N, and wherein the lower seed layer includes Ni and at least one element selected from a group consisting of: W and Cr. Other embodiments are described herein regarding perpendicular magnetic recording systems and methods of producing perpendicular magnetic media.
摘要翻译： 根据一个实施例，垂直磁记录介质包括形成在基底上方的软磁性底层，形成在软磁性底层上方的下部种子层，形成在下部种子层上方的至少一个上部种子层， 至少一个上部种子层，形成在中间层上方的垂直记录层和形成在垂直记录层上方的保护层，其中至少一个上部种子层包含Ni或包含N的Ni基合金，并且其中下部种子层 包括Ni和选自由W和Cr组成的组中的至少一种元素。 本文描述了关于垂直磁记录系统和产生垂直磁性介质的方法的其它实施例。
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公开(公告)号：US20120099220A1
公开(公告)日：2012-04-26
申请号：US12909783
申请日：2010-10-21
申请人： Ichiro Tamai , Yotsuo Yahisa , Akemi Hirotsune
发明人： Ichiro Tamai , Yotsuo Yahisa , Akemi Hirotsune
CPC分类号： G11B5/7325 , G11B5/7379
摘要： In one embodiment, a perpendicular magnetic recording medium includes a crystalline seed layer having a pseudo-hcp structure with stacking faults formed above a soft magnetic underlayer, a first interlayer comprising Ru and one of W, Ta, Mo, and Nb formed above the crystalline seed layer, a second interlayer formed above the first interlayer, and a magnetic recording layer formed above the second interlayer. The first interlayer has a W concentration between about 32 at % and 50 at %, Mo in a concentration between about 36 at % and 52 at %, Ta in a concentration between about 20 at % and 30 at %, or Nb in a concentration between about 7 at % and 30 at %. In another embodiment, a system includes a recording medium as described above, a magnetic head for reading from and/or writing to the medium, a head slider for supporting the head, and a control unit coupled to the head.
摘要翻译： 在一个实施例中，垂直磁记录介质包括具有形成在软磁性底层上方的堆垛层错的伪hcp结构的结晶种子层，包含Ru和在晶体上形成的W，Ta，Mo和Nb中的一个的第一中间层 晶种层，形成在第一中间层上方的第二中间层和形成在第二中间层上方的磁记录层。 第一中间层具有约32at％至50at％的W浓度，浓度在约36at％至52at％之间的Mo，浓度在约20at％至30at％之间的Ta或浓度为Nb 在约7at％和30at％之间。 在另一个实施例中，系统包括如上所述的记录介质，用于从介质读取和/或写入介质的磁头，用于支撑磁头的磁头滑块以及耦合到磁头的控制单元。
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公开(公告)号：US06596420B2
公开(公告)日：2003-07-22
申请号：US10101946
申请日：2002-03-21
申请人： Tetsuya Kanbe , Akira Ishikawa , Ichiro Tamai , Yotsuo Yahisa , Yuzuru Hosoe , Kiwamu Tanahashi , Yoshibumi Matsuda , Hiroyuki Kataoka , Toshinori Ono , Shinji Fukaya , Kazuhiro Ura , Naoto Endo , Tomoo Yamamoto
发明人： Tetsuya Kanbe , Akira Ishikawa , Ichiro Tamai , Yotsuo Yahisa , Yuzuru Hosoe , Kiwamu Tanahashi , Yoshibumi Matsuda , Hiroyuki Kataoka , Toshinori Ono , Shinji Fukaya , Kazuhiro Ura , Naoto Endo , Tomoo Yamamoto
IPC分类号： G11B566
CPC分类号： G11B5/7325 , G11B5/012 , G11B5/39 , G11B5/66 , Y10S428/90 , Y10T428/12465 , Y10T428/12847 , Y10T428/12854 , Y10T428/26
摘要： A magnetic recording system includes an in-plane magnetic recording medium having a magnetic layer fabricated on a single underlayer or on a plurality of underlayers respectively fabricated on a substrate; a driver unit for driving the in-plane magnetic recording medium in a write direction; a magnetic head having a read unit and a write unit; a unit for moving the magnetic head relative to the in-plane magnetic recording medium; and a read/write signal processing unit for reading an output signal from the magnetic head and writing an input signal to the magnetic recording media, wherein the read unit of the magnetic head is a magnetoresistive head and the single underlayer or at least one of the plurality of underlayers is made of Co-containing amorphous material or fine crystal material, or is made of alloy material, the alloy material having as the main components at least one element selected from a group consisting of Cr, Mo, V and Ta and containing at least one element selected from a group consisting of B, C, P and Bi. The magnetic recording system can be realized which can read and write high density information and have high reliability.
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公开(公告)号：US06403240B1
公开(公告)日：2002-06-11
申请号：US08849414
申请日：1997-05-19
申请人： Tetsuya Kanbe , Akira Ishikawa , Ichiro Tamai , Yotsuo Yahisa , Yuzuru Hosoe , Kiwamu Tanahashi , Yoshibumi Matsuda , Hiroyuki Kataoka , Toshinori Ono , Shinji Fukaya , Kazuhiro Ura , Naoto Endo , Tomoo Yamamoto
发明人： Tetsuya Kanbe , Akira Ishikawa , Ichiro Tamai , Yotsuo Yahisa , Yuzuru Hosoe , Kiwamu Tanahashi , Yoshibumi Matsuda , Hiroyuki Kataoka , Toshinori Ono , Shinji Fukaya , Kazuhiro Ura , Naoto Endo , Tomoo Yamamoto
IPC分类号： B32B1504
CPC分类号： G11B5/7325 , G11B5/012 , G11B5/39 , G11B5/66 , Y10S428/90 , Y10T428/12465 , Y10T428/12847 , Y10T428/12854 , Y10T428/26
摘要： A magnetic recording system includes an in-plane magnetic recording medium having a magnetic layer fabricated on a single underlayer or on a plurality of underlayers respectively fabricated on a substrate; a driver unit for driving the in-plane magnetic recording medium in a write direction; a magnetic head having a read unit and a write unit; a unit for moving the magnetic head relative to the in-plane magnetic recording medium; and a read/write signal processing unit for reading an output signal from the magnetic head and writing an input signal to the magnetic recording media, wherein the read unit of the magnetic head is a magnetoresistive head and the single underlayer or at least one of the plurality of underlayers is made of Co-containing amorphous material or fine crystal material, or is made of alloy material, the alloy material having as the main components at least one element selected from a group consisting of Cr, Mo, V and Ta and containing at least one element selected from a group consisting of B, C, P and Bi. The magnetic recording system can be realized which can read and write high density information and have high reliability.
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公开(公告)号：US07056604B2
公开(公告)日：2006-06-06
申请号：US10452723
申请日：2003-06-03
申请人： Tetsuya Kanbe , Akira Ishikawa , Ichiro Tamai , Yotsuo Yahisa , Yuzuru Hosoe , Kiwamu Tanahashi , Yoshibumi Matsuda , Hiroyuki Kataoka , Toshinori Ono , Shinji Fukaya , Kazuhiro Ura , Naoto Endo , Tomoo Yamamoto
发明人： Tetsuya Kanbe , Akira Ishikawa , Ichiro Tamai , Yotsuo Yahisa , Yuzuru Hosoe , Kiwamu Tanahashi , Yoshibumi Matsuda , Hiroyuki Kataoka , Toshinori Ono , Shinji Fukaya , Kazuhiro Ura , Naoto Endo , Tomoo Yamamoto
CPC分类号： G11B5/7325 , G11B5/012 , G11B5/39 , G11B5/66 , Y10S428/90 , Y10T428/12465 , Y10T428/12847 , Y10T428/12854 , Y10T428/26
摘要： A magnetic recording system includes an in-plane magnetic recording medium having a magnetic layer fabricated on a single underlayer or on a plurality of underlayers respectively fabricated on a substrate; a driver unit for driving the in-plane magnetic recording medium in a write direction; a magnetic head having a read unit and a write unit; a unit for moving the magnetic head relative to the in-plane magnetic recording medium; and a read/write signal processing unit for reading an output signal from the magnetic head and writing an input signal to the magnetic recording media, wherein the read unit of the magnetic head is a magnetoresistive head and the single underlayer or at least one of the plurality of underlayers is made of Co-containing amorphous material or fine crystal material, or is made of alloy material, the alloy material having as the main components at least one element selected from a group consisting of Cr, Mo, V and Ta and containing at least one element selected from a group consisting of B, C, P and Bi. The magnetic recording system can be realized which can read and write high density information and have high reliability.
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公开(公告)号：US06887565B2
公开(公告)日：2005-05-03
申请号：US10306361
申请日：2002-11-27
CPC分类号： G11B5/7325 , G11B5/66 , Y10S428/90 , Y10T428/12465 , Y10T428/12854 , Y10T428/265
摘要： An inplane magnetic recording medium having high S/N and thermal stability and a reliable magnetic storage device having surface recording density of 50 megabit/mm2 or more is described. The magnetic recording medium includes magnetic layers formed on a nonmagnetic substrate with a plurality of ground layers therebetween, at least one of the ground layers formed from an alloy of a body-centered cubic structure containing Cr as a main component and B of from 2 atomic % to 12 atomic %. Main components of the magnetic layers include a lower magnetic layer containing Co and Cr of from 10 atomic % to 16 atomic %, with film thickness of from 1.5 nm to 4.5 nm, and an upper magnetic layer containing Co, coupling anti-ferromagnetically with the lower magnetic layer through nonmagnetic intermediate layers.
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