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1. 发明专利

JP2003317221A Perpendicular magnetic recording medium 有权
标题翻译：全能磁记录介质
公开(公告)号：JP2003317221A
公开(公告)日：2003-11-07
申请号：JP2002113638
申请日：2002-04-16
申请人： Fuji Electric Co Ltd , 富士電機株式会社
发明人： SAKAI YASUSHI , WATANABE SADAYUKI
IPC分类号： G11B5/66 , G11B5/65 , G11B5/667 , G11B5/738 , H01F10/13 , H01F10/16
摘要： PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording medium which has good electromagnetic conversion characteristics even at a high recording density and has excellent thermal stability and productivity.
SOLUTION: At least an intermediate layer, multilayered magnetic recording layers, a protective layer 10 and a liquid lubricant layer 11 are successively laminated on a nonmagnetic substrate 1. The multilayered magnetic recording layers are formed of at least three layers of the multilayered magnetic recording layers having a first magnetic recording layer 7 of a CoCr based alloy film having a granular structure, a second magnetic recording layer 8 of a CoCr based alloy film having a non-granular structure and a third magnetic recording layer 9 of an amorphous film of a rare earth-transition metal alloy and the film thicknesses of these magnetic recording layers are optimized. Also, the intermediate layer 6 is formed of an Ru or Ru alloy film, by which the crystal orientation of the layer 7 can be adequately controlled. Also, the lower layer of the intermediate layer 6 is provided with a seed layer 5, by which the control of the crystal orientation of the intermediate layer 6 is made possible.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供即使在高记录密度下也具有良好的电磁转换特性并且具有优异的热稳定性和生产率的垂直磁记录介质。解决方案：至少中间层，多层磁记录层，保护层10和液体润滑剂层11依次层压在非磁性基片1上。多层磁记录层由至少三层的多层磁记录层具有具有颗粒结构的CoCr基合金膜的第一磁记录层7，具有非颗粒结构的CoCr基合金膜的第二磁记录层8和非晶膜的第三磁记录层9 的稀土 - 过渡金属合金，并且这些磁记录层的膜厚度被优化。此外，中间层6由Ru或Ru合金膜形成，通过该膜可以适当地控制层7的晶体取向。此外，中间层6的下层设置有种子层5，通过该晶种层5可以控制中间层6的晶体取向。版权所有（C）2004，JPO

2. 发明专利

JP2003022513A Perpendicular magnetic recording medium and method for manufacturing the same 有权
标题翻译：全能磁记录介质及其制造方法
公开(公告)号：JP2003022513A
公开(公告)日：2003-01-24
申请号：JP2001206698
申请日：2001-07-06
申请人： Fuji Electric Co Ltd , 富士電機株式会社
发明人： SAKAI YASUSHI , UWAZUMI HIROYUKI , ENOMOTO KAZUO , WATANABE SADAYUKI
IPC分类号： G11B5/65 , G11B5/66 , G11B5/667 , G11B5/738 , G11B5/851
CPC分类号： G11B5/66 , G11B5/851 , Y10S428/90 , Y10T428/12465 , Y10T428/12778 , Y10T428/12826 , Y10T428/12847 , Y10T428/12854 , Y10T428/12861 , Y10T428/12931 , Y10T428/24975 , Y10T428/265
摘要： PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording medium and a method for manufacturing the medium showing preferable electromagnetic conversion characteristics even in high recording density, having extremely excellent thermal stability and excellent productivity. SOLUTION: The magnetic recording layer of the perpendicular recording medium is formed by successively depositing a CoCr-base alloy crystalline film and a rare earth-transition metal alloy amorphous film. The CoCr-base alloy crystalline film has a film thickness of >=10 nm and =2 nm and =2. In the method for manufacturing the perpendicular memory medium, the rare earth-transition metal alloy amorphous film is deposited under the condition of the gas pressure in the range of >=10 mTorr and =20 mTorr and
摘要翻译：要解决的问题：提供垂直磁记录介质和即使在高记录密度下也显示优选的电磁转换特性的介质的制造方法，具有非常优异的热稳定性和优异的生产率。解决方案：垂直记录介质的磁记录层通过连续沉积CoCr基合金晶体膜和稀土 - 过渡金属合金非晶膜形成。 CoCr基合金结晶膜的膜厚> 10nm且<= 30nm，而稀土 - 过渡金属合金非晶膜的膜厚> 2nm且<= 15nm。 CoCr基合金结晶膜的膜厚（a）与稀土 - 过渡金属合金非晶膜的膜厚（b）的膜厚比a / b> 2。在制造垂直记录介质的方法中，稀土 - 过渡金属合金非晶膜在> 10mTorr和<= 200mTorr范围内的气体压力条件下沉积，优选≥20mTorr， 100 mTorr。

3. 发明专利

JP2014222560A 磁気記録方法有权
标题翻译：磁记录方法
公开(公告)号：JP2014222560A
公开(公告)日：2014-11-27
申请号：JP2014176990
申请日：2014-09-01
申请人：富士電機株式会社 , Fuji Electric Co Ltd
发明人： WATANABE SADAYUKI
IPC分类号： G11B5/65 , G11B5/66
CPC分类号： G11B5/66
摘要：【課題】高密度の書き込みおよび良好な温度特性の制御を両立させる熱アシスト記録用磁気記録方法の提供。【解決手段】非磁性基体上に少なくとも下地層、磁気記録層、保護層が順次積層されてなる磁気記録媒体において、磁気記録層が、少なくとも二層の磁性層と、それら磁性層間に挿入され、かつ磁性層間を磁気的に結合している交換結合制御層とを含む構造を有し、信号書き込み時の結合エネルギーJwおよび信号保持状態における結合エネルギーJrが、0
摘要翻译：要解决的问题：提供一种能够实现高密度记录和良好的温度特性控制的热辅助记录的磁记录方法。解决方案：在磁记录介质中，至少下层，磁记录层和保护层依次层叠在非磁性基板上。磁记录层具有包括至少两个磁性层和交替耦合控制层的结构，其插入在磁性层之间并磁耦合磁性层。当写入信号时的耦合能量用J表示，并且在保持信号的状态下的耦合能量由J表示，写入在满足0

4. 发明专利

JP2003036525A Perpendicular magnetic recording medium and its manufacturing method 审中-公开
标题翻译：全能磁记录介质及其制造方法
公开(公告)号：JP2003036525A
公开(公告)日：2003-02-07
申请号：JP2001224865
申请日：2001-07-25
申请人： Fuji Electric Co Ltd , 富士電機株式会社
发明人： WATANABE SADAYUKI , SAKAI YASUSHI
IPC分类号： C23C14/34 , G11B5/65 , G11B5/667 , G11B5/738 , G11B5/851
摘要： PROBLEM TO BE SOLVED: To make the crystal particles fine and isolate them in a magnetic recording layer and provide a perpendicular magnetic recording medium which reduces magnetic interactions between the crystal particles.
SOLUTION: The perpendicular magnetic recording medium has a base layer, a magnetic recording layer, a protective coat, and a lubrication layer stacked at least on a non-magnetic base. In this invention, a separation layer is provided containing at least one or more kinds of oxides or nitrides between the crystal particles constituting the above base layer.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：使晶体颗粒细小并将其与磁记录层隔离，并提供减小结晶颗粒之间的磁相互作用的垂直磁记录介质。解决方案：垂直磁记录介质具有至少堆叠在非磁性基底上的基层，磁记录层，保护涂层和润滑层。在本发明中，提供了在构成上述基底层的结晶粒子之间含有至少一种以上的氧化物或氮化物的分离层。

5. 发明专利

JP2003067911A Perpendicular magnetic recording medium 审中-公开
标题翻译：全能磁记录介质
公开(公告)号：JP2003067911A
公开(公告)日：2003-03-07
申请号：JP2001253129
申请日：2001-08-23
申请人： Fuji Electric Co Ltd , Nippon Hoso Kyokai , 富士電機株式会社 , 日本放送協会
发明人： SAKAI YASUSHI , OTSUKI AKIHIRO , OKUBO KEIJI , ENOMOTO KAZUO , WATANABE SADAYUKI , TAKENOIRI SHUNJI , TAMAKI TAKAHIKO , KUGA ATSUSHI , MIYASHITA HIDEKAZU , TAGUCHI AKIRA
IPC分类号： G11B5/65 , G11B5/64 , G11B5/667 , H01F10/13
摘要： PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording medium with small noises caused by the medium generated when reproducing a record and suitable for high recording density. SOLUTION: In the perpendicular magnetic recording medium comprising of at least a soft magnetic backing layer, an intermediate layer, a magnetic recording layer, a protection layer, and a liquid lubricant layer sequentially laminated on a non magnetic substrate, the above magnetic recording layer is comprised of rare-earth transition alloyed metal amorphous films, the rare- earth transition alloyed metal amorphous film has a fine column structure, boundary parts exist around these columns, the composition of the boundary parts are the vicinity of composition of compensation points of the rare-earth transition alloyed metal amorphous films, and the composition in the above columns is lower than the composition of above boundary part in terms of the density of rare-earth elements and higher than the composition of above boundary parts in terms of the density of the transition metal elements, in performing perpendicular magnetic recording, the magnetization is fixed as the above boundary part is a compensation point composition, and the above boundary part function as a magnetic wall fixing part of a recording signal.
摘要翻译：要解决的问题：提供一种垂直磁记录介质，其在再现记录时产生的适合于高记录密度的介质产生小的噪声。解决方案：在至少包括柔性磁背衬层，中间层，磁记录层，保护层和顺序层压在非磁性基板上的液体润滑剂层的垂直磁记录介质中，上述磁记录层是由稀土跃迁合金金属非晶膜组成，稀土跃迁合金金属非晶膜具有精细的柱结构，边界部分存在于这些柱周围，边界部分的组成是稀有元素的补偿点的组成附近 - 地层过渡合金化金属非晶膜，并且上述列中的组成低于上述边界部分的组成，就稀土元素的密度而言，高于上述边界部分的组成过渡金属元素在进行垂直磁记录时，磁化固定为上述边界部分是补偿点组成，并且上述边界部分用作记录信号的磁壁固定部分。

6. 发明专利

JP2003067908A Perpendicular magnetic recording medium and its manufacturing method 审中-公开
标题翻译：全能磁记录介质及其制造方法
公开(公告)号：JP2003067908A
公开(公告)日：2003-03-07
申请号：JP2001253128
申请日：2001-08-23
申请人： Fuji Electric Co Ltd , Nippon Hoso Kyokai , 富士電機株式会社 , 日本放送協会
发明人： SAKAI YASUSHI , OTSUKI AKIHIRO , OKUBO KEIJI , ENOMOTO KAZUO , WATANABE SADAYUKI , TAMAKI TAKAHIKO , KUGA ATSUSHI , MIYASHITA HIDEKAZU , TAGUCHI AKIRA
IPC分类号： C23C14/14 , C23C14/34 , G11B5/64 , G11B5/667 , G11B5/73 , G11B5/851 , H01F10/13 , H01F41/18
CPC分类号： G11B5/667 , G11B5/7325 , G11B5/851
摘要： PROBLEM TO BE SOLVED: To provide a method to easily obtain a perpendicular magnetic recording medium having a targeted magnetic characteristics by a spattering method and obtained magnetic recording medium.
SOLUTION: The perpendicular magnetic recording medium in this invention is made up by laminating at least a soft magnetic backing layer, a foundation layer, a magnetic recording layer, a protection layer, and a liquid lubricant layer sequentially on a non-magnetic substrate. The above magnetic recording layer is a rare metal-transition alloyed metal amorphous film formed by the spattering method, and the formation of the above magnetic recording layer by the spattering method is characterized to be performed by the film forming gas added with 2%≤H
2 gas ≤60%. This invention discloses the manufacturing method of the perpendicular magnetic recording medium.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种通过溅射方法和获得的磁记录介质容易地获得具有目标磁特性的垂直磁记录介质的方法。解决方案：本发明的垂直磁记录介质是通过在非磁性衬底上依次层叠至少软磁背衬层，基础层，磁记录层，保护层和液体润滑剂层而构成的。上述磁记录层是通过溅射法形成的稀有金属 - 过渡合金化金属非晶膜，通过溅射法形成上述磁记录层的特征在于，通过添加2％<= H2气<= 60％。本发明公开了垂直磁记录介质的制造方法。

7. 发明专利

JP2013101746A Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：JP2013101746A
公开(公告)日：2013-05-23
申请号：JP2013012810
申请日：2013-01-28
申请人： Fuji Electric Co Ltd , 富士電機株式会社
发明人： WATANABE SADAYUKI
IPC分类号： G11B5/66 , G11B5/65
CPC分类号： G11B5/66
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium for thermally assisted recording which can make high density writing performance compatible with control of good temperature characteristics.SOLUTION: A magnetic recording medium comprises at least an under-layer, a magnetic recording layer, and a protective layer sequentially laminated on a nonmagnetic substrate. The magnetic recording layer comprises structure comprising at least two magnetic layers, and an exchange coupling control layer inserted between the magnetic layers and being magnetically coupled through the magnetic layers. In the magnetic recording medium for thermally assisted recording, coupling energy Jwhen writing a signal and coupling energy Jin a state of retaining a signal satisfy relation of 0
摘要翻译：要解决的问题：提供一种用于热辅助记录的磁记录介质，其可以使得高密度写入性能与良好温度特性的控制相容。解决方案：磁记录介质至少包括下层，磁记录层和顺序层压在非磁性基底上的保护层。磁记录层包括至少两个磁性层的结构以及插在磁性层之间并通过磁性层磁耦合的交换耦合控制层。在用于热辅助记录的磁记录介质中，在写入信号和耦合能量J r 的状态下的耦合能量J w 保持信号满足0 w r 的关系。版权所有（C）2013，JPO＆INPIT

8. 发明专利

JP2012053969A Perpendicular magnetic recording medium 有权
标题翻译：全能磁记录介质
公开(公告)号：JP2012053969A
公开(公告)日：2012-03-15
申请号：JP2011056576
申请日：2011-03-15
申请人： Fuji Electric Co Ltd , 富士電機株式会社
发明人： WATANABE SADAYUKI
IPC分类号： G11B5/66 , G11B5/65 , H01F10/16
CPC分类号： G11B5/66
摘要： PROBLEM TO BE SOLVED: To realize a perpendicular magnetic recording medium which enables a high track density while maintaining good OW characteristics, SNR, and thermal stability.SOLUTION: A perpendicular magnetic recording medium is provided with a magnetic recording layer on a non-magnetic base. The magnetic recording layer comprises a first magnetic layer, a first exchange coupling control layer, a second magnetic layer, a third magnetic layer, and a fourth magnetic layer, in this order. It is preferable that when the perpendicular magnetic anisotropy constants of the first magnetic layer, second magnetic layer, third magnetic layer, and fourth magnetic layer are Ku, Ku, Ku, and Kurespectively, relationships of Ku>Ku>Kuand Ku>Ku>Kuare satisfied.
摘要翻译：要解决的问题：实现能够实现高轨道密度同时保持良好OW特性，SNR和热稳定性的垂直磁记录介质。解决方案：垂直磁记录介质在非磁性基底上设有磁记录层。磁记录层依次包括第一磁性层，第一交换耦合控制层，第二磁性层，第三磁性层和第四磁性层。优选的是，当第一磁性层，第二磁性层，第三磁性层和第四磁性层的垂直磁各向异性常数为Ku 1 时，Ku 2 ，Ku 3 和Ku 4 ，Ku 4 > Ku 3 > Ku 2 和Ku 1 < SB >> Ku 3 > Ku 2 。版权所有（C）2012，JPO＆INPIT

9. 发明专利

JP2003346334A Vertical magnetic record medium and manufacturing method therefor 有权
标题翻译：垂直磁记录介质及其制造方法
公开(公告)号：JP2003346334A
公开(公告)日：2003-12-05
申请号：JP2003050981
申请日：2003-02-27
申请人： Fuji Electric Co Ltd , 富士電機株式会社
发明人： WATANABE SADAYUKI , SAKAI YASUSHI
IPC分类号： G11B5/65 , G11B5/738 , G11B5/84
摘要： PROBLEM TO BE SOLVED: To improve magnetic interaction among the grains of a granular magnetic recording layer, and to provided a vertical magnetic record medium that can perform high-density recording with low noise.
SOLUTION: The vertical magnetic record medium has a structure, where a foundation layer 2, a magnetic recording layer 3, and a protective film 4 are successively formed on a non-magnetic substrate 1, and a liquid lubricant layer 5 is formed on the structure. In the magnetic recording layer 3, there are a crystal grain having ferromagnetism and a non-magnetic grain boundary surrounding the crystal grain, and the non-magnetic grain boundary uses the granular magnetic recording layer which is a non-magnetic nonmetal. The surface of the foundation layer 2, before forming the magnetic recording layer 3, is exposed in the atmosphere of O
2 or N
2 or the atmosphere of a mixed gas, where O
2 or N
2 is added to a rare gas, and O
2 or N
2 is made to accompany as a nucleus for use in non-magnetic nonmetal formation. After that, magnetic recording layer 3 is formed, the ferromagnetic crystal grain and the non-magnetic nonmetal grain boundary are formed from an initial layer, and the magnetic recording layer, having a satisfactory segregated structure, can be formed.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：改善粒状磁记录层的晶粒之间的磁相互作用，并提供可以以低噪声进行高密度记录的垂直磁记录介质。解决方案：垂直磁记录介质具有在非磁性基板1上依次形成基础层2，磁记录层3和保护膜4的结构，并且形成液体润滑剂层5 在结构上。在磁记录层3中，存在具有铁磁性的晶粒和围绕晶粒的非磁性晶界，非磁性晶界使用作为非磁性非金属的粒状磁记录层。在形成磁记录层3之前，将基础层2的表面暴露在O SB 2或N SB 2气氛或混合气体的气氛中，其中将O 2 或N 2 加入到稀有气体中，并使O SB＆lt; SB＆gt;或N＆lt; SB＆gt; 2＆lt; / SB＆作为用于非磁性非金属形成的核。之后，形成磁记录层3，由初始层形成铁磁晶粒和非磁性非金属晶界，并且可以形成具有令人满意的隔离结构的磁记录层。版权所有（C）2004，JPO

10. 发明专利

JP2003323709A Perpendicular magnetic recording medium and its manufacturing method 有权
标题翻译：全能磁记录介质及其制造方法
公开(公告)号：JP2003323709A
公开(公告)日：2003-11-14
申请号：JP2002130141
申请日：2002-05-01
申请人： Fuji Electric Co Ltd , 富士電機株式会社
发明人： WATANABE SADAYUKI , SAKAI YASUSHI
IPC分类号： C23C14/06 , C23C14/34 , G11B5/65 , G11B5/738 , G11B5/851 , H01F10/12
摘要： PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording medium and its manufacturing method to shrink and equalize the diameter of crystal grain of a magnetic recording layer and to reduce the interaction between grains.
SOLUTION: This method is a manufacturing method of the perpendicular magnetic recording medium laminating a base layer 2, the magnetic recording layer 3, a protective coat 4, and a fluid lubrication agent layer 5 in order on a non-magnetic base 1. Further in the method, when film formation of the base layer 2 and/or the magnetic recording layer 3 is performed by the sputtering, at least the base layer 2 or the magnetic recording layer 3 is formed by performing intermittence discharge by applying pulse voltage.
COPYRIGHT: (C)2004,JPO

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