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公开(公告)号：US11842755B2
公开(公告)日：2023-12-12
申请号：US17486608
申请日：2021-09-27
申请人： Dieter Suess
发明人： Dieter Suess
CPC分类号： G11B5/66 , B82Y25/00 , G01R33/093 , G01R33/1207 , G11B5/64
摘要： A multilayer exchange spring recording media consists of a magnetically hard magnetic storage layer strongly exchange coupled to a softer nucleation host. The strong exchange coupling can be through a coupling layer or direct. The hard magnetic storage layer has a strong perpendicular anisotropy. The nucleation host consists of one or more ferromagnetic coupled layers. For a multilayer nucleation host the anisotropy increases from layer to layer. The anisotropy in the softest layer of the nucleation host can be two times smaller than that of the hard magnetic storage layer. The lateral exchange between the grains is small. The nucleation host decreases the coercive field significantly while keeping the energy barrier of the hard layer almost unchanged. The coercive field of the total structure depends on one over number of layers in the nucleation host. The invention proposes a recording media that overcomes the writeability problem of perpendicular recording media.
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公开(公告)号：US09928864B2
公开(公告)日：2018-03-27
申请号：US12619849
申请日：2009-11-17
申请人： Dieter Suess
发明人： Dieter Suess
CPC分类号： G11B5/66 , B82Y25/00 , G01R33/093 , G01R33/1207 , G11B5/64
摘要： A multilayer exchange spring recording media consists of a magnetically hard magnetic storage layer strongly exchange coupled to a softer nucleation host. The strong exchange coupling can be through a coupling layer or direct. The hard magnetic storage layer has a strong perpendicular anisotropy. The nucleation host consists of one or more ferromagnetic coupled layers. For a multilayer nucleation host the anisotropy increases from layer to layer. The anisotropy in the softest layer of the nucleation host can be two times smaller than that of the hard magnetic storage layer. The lateral exchange between the grains is small. The nucleation host decreases the coercive field significantly while keeping the energy barrier of the hard layer almost unchanged. The coercive field of the total structure depends on one over number of layers in the nucleation host. The invention proposes a recording media that overcomes the writeability problem of perpendicular recording media.
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公开(公告)号：US12020734B2
公开(公告)日：2024-06-25
申请号：US17492735
申请日：2021-10-04
申请人： Dieter Suess
发明人： Dieter Suess
CPC分类号： G11B5/674 , B82Y25/00 , G01R33/093 , G01R33/1207 , G11B5/66
摘要： A multilayer exchange spring recording media consists of a magnetically hard magnetic storage layer strongly exchange coupled to a softer nucleation host. The strong exchange coupling can be through a coupling layer or direct. The hard magnetic storage layer has a strong perpendicular anisotropy. The nucleation host consists of one or more ferromagnetic coupled layers. For a multilayer nucleation host the anisotropy increases from layer to layer. The anisotropy in the softest layer of the nucleation host can be two times smaller than that of the hard magnetic storage layer. The lateral exchange between the grains is small. The nucleation host decreases the coercive field significantly while keeping the energy barrier of the hard layer almost unchanged. The coercive field of the total structure depends on one over number of layers in the nucleation host. The invention proposes a recording media that overcomes the writeability problem of perpendicular recording media.
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公开(公告)号：US11908500B2
公开(公告)日：2024-02-20
申请号：US17486608
申请日：2021-09-27
申请人： Dieter Suess
发明人： Dieter Suess
CPC分类号： G11B5/66 , B82Y25/00 , G01R33/093 , G01R33/1207 , G11B5/64
摘要： A multilayer exchange spring recording media consists of a magnetically hard magnetic storage layer strongly exchange coupled to a softer nucleation host. The strong exchange coupling can be through a coupling layer or direct. The hard magnetic storage layer has a strong perpendicular anisotropy. The nucleation host consists of one or more ferromagnetic coupled layers. For a multilayer nucleation host the anisotropy increases from layer to layer. The anisotropy in the softest layer of the nucleation host can be two times smaller than that of the hard magnetic storage layer. The lateral exchange between the grains is small. The nucleation host decreases the coercive field significantly while keeping the energy barrier of the hard layer almost unchanged. The coercive field of the total structure depends on one over number of layers in the nucleation host. The invention proposes a recording media that overcomes the writeability problem of perpendicular recording media.
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公开(公告)号：US20220028419A1
公开(公告)日：2022-01-27
申请号：US17492735
申请日：2021-10-04
申请人： Dieter Suess
发明人： Dieter Suess
摘要： A multilayer exchange spring recording media consists of a magnetically hard magnetic storage layer strongly exchange coupled to a softer nucleation host. The strong exchange coupling can be through a coupling layer or direct. The hard magnetic storage layer has a strong perpendicular anisotropy. The nucleation host consists of one or more ferromagnetic coupled layers. For a multilayer nucleation host the anisotropy increases from layer to layer. The anisotropy in the softest layer of the nucleation host can be two times smaller than that of the hard magnetic storage layer. The lateral exchange between the grains is small. The nucleation host decreases the coercive field significantly while keeping the energy barrier of the hard layer almost unchanged. The coercive field of the total structure depends on one over number of layers in the nucleation host. The invention proposes a recording media that overcomes the writeability problem of perpendicular recording media.
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公开(公告)号：US11138997B2
公开(公告)日：2021-10-05
申请号：US15925749
申请日：2018-03-19
申请人： Dieter Suess
发明人： Dieter Suess
摘要： A multilayer exchange spring recording media consist of a magnetically hard magnetic storage layer strongly exchange coupled to a softer nucleation host. The strong exchange coupling can be through a coupling layer or direct. The hard magnetic storage layer has a strong perpendicular anisotropy. The nucleation host consists of one or more ferromagnetic coupled layers. For a multilayer nucleation host the anisotropy increases from layer to layer. The anisotropy in the softest layer of the nucleation host can be two times smaller than that of the hard magnetic storage layer. The lateral exchange between the grains is small. The nucleation host decreases the coercive field significantly while keeping the energy barrier of the hard layer almost unchanged. The coercive field of the total structure depends on one over number of layers in the nucleation host. The invention proposes a recording media that overcomes the writeability problem of perpendicular recording media.
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公开(公告)号：US20100062286A1
公开(公告)日：2010-03-11
申请号：US12619849
申请日：2009-11-17
申请人： Dieter SUESS
发明人： Dieter SUESS
IPC分类号： G11B5/33
CPC分类号： G11B5/66 , B82Y25/00 , G01R33/093 , G01R33/1207 , G11B5/64
摘要： A multilayer exchange spring recording media consists of a magnetically hard magnetic storage layer strongly exchange coupled to a softer nucleation host. The strong exchange coupling can be through a coupling layer or direct. The hard magnetic storage layer has a strong perpendicular anisotropy. The nucleation host consists of one or more ferromagnetic coupled layers. For a multilayer nucleation host the anisotropy increases from layer to layer. The anisotropy in the softest layer of the nucleation host can be two times smaller than that of the hard magnetic storage layer. The lateral exchange between the grains is small. The nucleation host decreases the coercive field significantly while keeping the energy barrier of the hard layer almost unchanged. The coercive field of the total structure depends on one over number of layers in the nucleation host. The invention proposes a recording media that overcomes the writeability problem of perpendicular recording media.
摘要翻译： 多层交换弹簧记录介质由磁性硬磁存储层强烈交换耦合到较软的成核主机。 强交换耦合可以通过耦合层或直接连接。 硬磁存储层具有强烈的垂直各向异性。 成核主体由一个或多个铁磁耦合层组成。 对于多层成核主体，各向异性逐层增加。 成核主体最软层的各向异性可以比硬磁存储层小两倍。 颗粒之间的横向交换很小。 成核主体显着降低矫顽场，同时保持硬层的能量阻挡几乎不变。 总结构的矫顽场取决于成核主体中的一层多层。 本发明提出了克服垂直记录介质的可写性问题的记录介质。
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公开(公告)号：US20070292720A1
公开(公告)日：2007-12-20
申请号：US11424859
申请日：2006-06-17
申请人： Dieter Suess
发明人： Dieter Suess
IPC分类号： G11B5/66
CPC分类号： G11B5/66 , B82Y25/00 , G01R33/093 , G01R33/1207 , G11B5/64
摘要： A multilayer exchange spring recording media consists of a magnetically hard magnetic storage layer strongly exchange coupled to a softer nucleation host. The strong exchange coupling can be through a coupling layer or direct. The hard magnetic storage layer has a strong perpendicular anisotropy. The nucleation host consists of one or more ferromagnetic coupled layers. For a multilayer nucleation host the anisotropy increases from layer to layer. The anisotropy in the softest layer of the nucleation host can be two times smaller than that of the hard magnetic storage layer. The lateral exchange between the grains is small. The nucleation host decreases the coercive field significantly while keeping the energy barrier of the hard layer almost unchanged. The coercive field of the total structure depends on one over number of layers in the nucleation host. The invention proposes a recording media that overcomes the writeability problem of perpendicular recording media.
摘要翻译： 多层交换弹簧记录介质由磁性硬磁存储层强烈交换耦合到较软的成核主机。 强交换耦合可以通过耦合层或直接连接。 硬磁存储层具有强烈的垂直各向异性。 成核主体由一个或多个铁磁耦合层组成。 对于多层成核主体，各向异性逐层增加。 成核主体最软层的各向异性可以比硬磁存储层小两倍。 颗粒之间的横向交换很小。 成核主体显着降低矫顽场，同时保持硬层的能量阻挡几乎不变。 总结构的矫顽场取决于成核主体中的一层多层。 本发明提出了克服垂直记录介质的可写性问题的记录介质。
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公开(公告)号：US20240079030A1
公开(公告)日：2024-03-07
申请号：US18503873
申请日：2023-11-07
申请人： Dieter Suess
发明人： Dieter Suess
CPC分类号： G11B5/674 , B82Y25/00 , G01R33/093 , G01R33/1207
摘要： A multilayer exchange spring recording media consists of a magnetically hard magnetic storage layer strongly exchange coupled to a softer nucleation host. The strong exchange coupling can be through a coupling layer or direct. The hard magnetic storage layer has a strong perpendicular anisotropy. The nucleation host consists of one or more ferromagnetic coupled layers. For a multilayer nucleation host the anisotropy increases from layer to layer. The anisotropy in the softest layer of the nucleation host can be two times smaller than that of the hard magnetic storage layer. The lateral exchange between the grains is small. The nucleation host decreases the coercive field significantly while keeping the energy barrier of the hard layer almost unchanged. The coercive field of the total structure depends on one over number of layers in the nucleation host. The invention proposes a recording media that overcomes the writeability problem of perpendicular recording media.
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公开(公告)号：US20220013141A1
公开(公告)日：2022-01-13
申请号：US17486608
申请日：2021-09-27
申请人： Dieter Suess
发明人： Dieter Suess
摘要： A multilayer exchange spring recording media consists of a magnetically hard magnetic storage layer strongly exchange coupled to a softer nucleation host. The strong exchange coupling can be through a coupling layer or direct. The hard magnetic storage layer has a strong perpendicular anisotropy. The nucleation host consists of one or more ferromagnetic coupled layers. For a multilayer nucleation host the anisotropy increases from layer to layer. The anisotropy in the softest layer of the nucleation host can be two times smaller than that of the hard magnetic storage layer. The lateral exchange between the grains is small. The nucleation host decreases the coercive field significantly while keeping the energy barrier of the hard layer almost unchanged. The coercive field of the total structure depends on one over number of layers in the nucleation host. The invention proposes a recording media that overcomes the writeability problem of perpendicular recording media.
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