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公开(公告)号：US20090197120A1
公开(公告)日：2009-08-06
申请号：US12240419
申请日：2008-09-29
申请人： Jun Taguchi , Yuta Toyoda , Takuya Uzumaki , Tsutomu Tanaka , Toshio Sugimoto , Nobuhide Aoyama , Ryosaku Inamura , Ryo Kurita
发明人： Jun Taguchi , Yuta Toyoda , Takuya Uzumaki , Tsutomu Tanaka , Toshio Sugimoto , Nobuhide Aoyama , Ryosaku Inamura , Ryo Kurita
IPC分类号： G11B5/66
摘要： A magnetic recording medium for vertical magnetic recording includes a substrate, and a layer laminated on the substrate, including a first magnetic recording layer made of a granular material, an exchange-coupling-strength control layer, a second magnetic recording layer made of a granular material, and a third magnetic recording layer made of a non-granular material.
摘要翻译： 用于垂直磁记录的磁记录介质包括基板和层叠在基板上的层，包括由粒状材料制成的第一磁记录层，交换耦合强度控制层，由颗粒状的第二磁记录层 材料和由非颗粒材料制成的第三磁记录层。
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公开(公告)号：US07947385B2
公开(公告)日：2011-05-24
申请号：US12496299
申请日：2009-07-01
申请人： Ryosaku Inamura , Yuta Toyoda
发明人： Ryosaku Inamura , Yuta Toyoda
IPC分类号： G11B5/66
CPC分类号： G11B5/732
摘要： A magnetic storage medium includes a seed layer made of non-magnetic and amorphous Co—Cr—W, an intermediate layer having a crystalline structure, which is made of a non-magnetic material on the seed layer and has a c-axis oriented in a thickness direction of the seed layer in a hexagonal close-packed structure, and a recording layer made of mainly a magnetic material on the intermediate layer and having information magnetically recorded therein.
摘要翻译： 磁存储介质包括由非磁性和无定形Co-Cr-W制成的晶种层，该晶体结构在晶种层上由非磁性材料制成并且具有c轴取向为 六方密堆积结构中种子层的厚度方向以及在中间层上主要由磁性材料制成的记录层，并且具有磁性地记录在其中的信息。
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公开(公告)号：US20090296278A1
公开(公告)日：2009-12-03
申请号：US12403215
申请日：2009-03-12
申请人： Ryosaku Inamura , Yuta Toyoda
发明人： Ryosaku Inamura , Yuta Toyoda
摘要： A perpendicular magnetic recording medium includes a nonmagnetic seed layer, a nonmagnetic intermediate layer provided on the nonmagnetic seed layer, and a perpendicular recording layer provided on the nonmagnetic intermediate layer. The nonmagnetic seed layer includes a first seed layer made of an amorphous material, and a second seed layer provided between the first seed layer and the nonmagnetic intermediate layer and made of a material having a fcc structure. The amorphous material includes at least one element selected from a group consisting of Ta, W, Nb, Mo, Zr and alloys thereof which include at least one of Ta, W, Nb, Mo and Zr as a main component exceeding 50 at. %.
摘要翻译： 垂直磁记录介质包括非磁性种子层，设置在非磁性种子层上的非磁性中间层和设置在非磁性中间层上的垂直记录层。 非磁性种子层包括由非晶材料制成的第一籽晶层和设置在第一种子层和非磁性中间层之间并由具有fcc结构的材料制成的第二籽晶层。 无定形材料包括选自Ta，W，Nb，Mo，Zr及其合金中的至少一种元素，其包括作为主要成分的Ta，W，Nb，Mo和Zr中的至少一种超过50at。 ％。
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公开(公告)号：US20100021766A1
公开(公告)日：2010-01-28
申请号：US12496299
申请日：2009-07-01
申请人： Ryosaku Inamura , Yuta Toyoda
发明人： Ryosaku Inamura , Yuta Toyoda
IPC分类号： G11B5/62
CPC分类号： G11B5/732
摘要： A magnetic storage medium includes a seed layer made of non-magnetic and amorphous Co—Cr—W, an intermediate layer having a crystalline structure, which is made of a non-magnetic material on the seed layer and has a c-axis oriented in a thickness direction of the seed layer in a hexagonal close-packed structure, and a recording layer made of mainly a magnetic material on the intermediate layer and having information magnetically recorded therein.
摘要翻译： 磁存储介质包括由非磁性和无定形Co-Cr-W制成的晶种层，该晶体结构在晶种层上由非磁性材料制成并且具有c轴取向为 六方密堆积结构中种子层的厚度方向以及在中间层上主要由磁性材料制成的记录层，并且具有磁性地记录在其中的信息。
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公开(公告)号：US20090296274A1
公开(公告)日：2009-12-03
申请号：US12403236
申请日：2009-03-12
申请人： Ryosaku Inamura , Yuta Toyoda
发明人： Ryosaku Inamura , Yuta Toyoda
摘要： A perpendicular magnetic recording medium includes a nonmagnetic seed layer, a nonmagnetic intermediate layer provided on the nonmagnetic seed layer, and a perpendicular recording layer provided on the nonmagnetic intermediate layer. The nonmagnetic seed layer includes a first seed layer made of a Ni alloy having a fcc structure, and a second seed layer provided between the first seed layer and the nonmagnetic intermediate layer and made of a Ni alloy having a fcc structure. A content of one or more elements other than Ni within the Ni alloy forming the second seed layer and having a Goldschmidt radius greater than that of Ni is larger than a content of one or more elements other than Ni within the Ni alloy forming the first seed layer and having a Goldschmidt radius greater than that of Ni.
摘要翻译： 垂直磁记录介质包括非磁性种子层，设置在非磁性种子层上的非磁性中间层和设置在非磁性中间层上的垂直记录层。 非磁性种子层包括由具有fcc结构的Ni合金制成的第一籽晶层和设置在第一种子层和非磁性中间层之间并由具有fcc结构的Ni合金制成的第二籽晶层。 形成第二晶种层的Ni合金中除了Ni之外的一种或多种元素，并且具有大于Ni的Goldschmidt半径的Ni的含量大于形成第一种子的Ni合金内的Ni以外的一种或多种元素的含量 并且具有大于Ni的Goldschmidt半径。
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公开(公告)号：US07871718B2
公开(公告)日：2011-01-18
申请号：US12403215
申请日：2009-03-12
申请人： Ryosaku Inamura , Yuta Toyoda
发明人： Ryosaku Inamura , Yuta Toyoda
IPC分类号： G11B5/66
摘要： A perpendicular magnetic recording medium includes a nonmagnetic seed layer, a nonmagnetic intermediate layer provided on the nonmagnetic seed layer, and a perpendicular recording layer provided on the nonmagnetic intermediate layer. The nonmagnetic seed layer includes a first seed layer made of an amorphous material, and a second seed layer provided between the first seed layer and the nonmagnetic intermediate layer and made of a material having a fcc structure. The amorphous material includes at least one element selected from a group consisting of Ta, W, Nb, Mo, Zr and alloys thereof which include at least one of Ta, W, Nb, Mo and Zr as a main component exceeding 50 at. %.
摘要翻译： 垂直磁记录介质包括非磁性种子层，设置在非磁性种子层上的非磁性中间层和设置在非磁性中间层上的垂直记录层。 非磁性种子层包括由非晶材料制成的第一籽晶层和设置在第一种子层和非磁性中间层之间并由具有fcc结构的材料制成的第二籽晶层。 无定形材料包括选自Ta，W，Nb，Mo，Zr及其合金中的至少一种元素，其包括作为主要成分的Ta，W，Nb，Mo和Zr中的至少一种超过50at。 ％。
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公开(公告)号：US07824785B2
公开(公告)日：2010-11-02
申请号：US12403236
申请日：2009-03-12
申请人： Ryosaku Inamura , Yuta Toyoda
发明人： Ryosaku Inamura , Yuta Toyoda
IPC分类号： G11B5/66
摘要： A perpendicular magnetic recording medium includes a nonmagnetic seed layer, a nonmagnetic intermediate layer provided on the nonmagnetic seed layer, and a perpendicular recording layer provided on the nonmagnetic intermediate layer. The nonmagnetic seed layer includes a first seed layer made of a Ni alloy having a fcc structure, and a second seed layer provided between the first seed layer and the nonmagnetic intermediate layer and made of a Ni alloy having a fcc structure. A content of one or more elements other than Ni within the Ni alloy forming the second seed layer and having a Goldschmidt radius greater than that of Ni is larger than a content of one or more elements other than Ni within the Ni alloy forming the first seed layer and having a Goldschmidt radius greater than that of Ni.
摘要翻译： 垂直磁记录介质包括非磁性种子层，设置在非磁性种子层上的非磁性中间层和设置在非磁性中间层上的垂直记录层。 非磁性种子层包括由具有fcc结构的Ni合金制成的第一籽晶层和设置在第一种子层和非磁性中间层之间并由具有fcc结构的Ni合金制成的第二籽晶层。 形成第二晶种层的Ni合金中除了Ni之外的一种或多种元素，并且具有大于Ni的Goldschmidt半径的Ni的含量大于形成第一种子的Ni合金内的Ni以外的一种或多种元素的含量 并且具有大于Ni的Goldschmidt半径。
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