专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

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

JP2003077122A Perpendicular magnetic recording medium and manufacturing method therefor 有权
标题翻译：全能磁记录介质及其制造方法
公开(公告)号：JP2003077122A
公开(公告)日：2003-03-14
申请号：JP2001264517
申请日：2001-08-31
申请人： Fuji Electric Co Ltd , 富士電機株式会社
发明人： UWAZUMI HIROYUKI , SAKAI YASUSHI , OIKAWA TADAAKI , NAKAMURA MASA
IPC分类号： G11B5/738 , G11B5/65 , G11B5/73 , G11B5/84 , G11B5/851
CPC分类号： G11B5/732 , G11B5/7325 , G11B5/851
摘要： PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording medium excellent in magnetic characteristics and electromagnetic transducing characteristics at low cost. SOLUTION: In the perpendicular magnetic recording medium using a granular magnetic layer, the perpendicular magnetic recording medium excellent in magnetic characteristics can be realized, even when the thickness of a non- magnetic base layer or the sum total thickness of the base layer and a seed layer is very thin, by forming the base layer using a metal or alloy having a hexagonal closest-packed (hcp) crystal structure and imparting the seed layer consisting of metal or alloy having a face-centered cubic (fcc) crystal structure to the under part of the base layer. Since the perpendicular magnetic recording medium has excellent magnetic characteristics without heating a substrate, a non-magnetic substrate formed by using a plastic resin material can also be used and manufacturing cost can be reduced by simplification of a manufacturing stage.
摘要翻译：要解决的问题：以低成本提供磁特性和电磁转换特性优异的垂直磁记录介质。解决方案：在使用粒状磁性层的垂直磁记录介质中，即使当非磁性基底层的厚度或基底层和种子的总和厚度也可以实现磁特性优异的垂直磁记录介质通过使用具有六方最密堆积（hcp）晶体结构的金属或合金形成基层，并将由具有面心立方（fcc）晶体结构的金属或合金构成的籽晶层赋予下面的层，非常薄部分基层。由于垂直磁记录介质在不加热基板的情况下具有优异的磁特性，所以也可以使用通过使用塑料树脂材料形成的非磁性基板，并且通过简化制造阶段可以降低制造成本。

3. 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。

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

JP2003022523A 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：JP2003022523A
公开(公告)日：2003-01-24
申请号：JP2001205178
申请日：2001-07-05
申请人： Fuji Electric Co Ltd , 富士電機株式会社
发明人： TAKENOIRI SHUNJI , SAKAI YASUSHI
IPC分类号： G11B5/738 , G11B5/73 , G11B5/74 , G11B5/84 , H01F10/30 , H01F41/32
CPC分类号： G11B5/7325 , G11B5/74 , G11B5/84 , H01F10/30 , H01F41/32
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a magnetic recording medium suitable for mass production by which a high Ku (constant of uniaxial anisotropy) is achieved in a conventional CoCr magnetic recording material and to improve the thermal stability.
SOLUTION: The method for manufacturing a perpendicular magnetic recording medium includes at least a process of depositing a base layer on a nonmagnetic substrate, a process of forming a magnetic recording layer on the base layer, a process of rapidly cooling the magnetic recording layer, a process of depositing a protective layer on the magnetic recording layer and a process of applying a liquid lubricant layer on the protective layer in this order. The constant of uniaxial anisotropy Ku and the coercive force Hc of the magnetic layer are thus improved.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种适用于大规模生产的磁记录介质的方法，其通过在常规CoCr磁记录材料中实现高Ku（单轴各向异性常数）并提高热稳定性。解决方案：垂直磁记录介质的制造方法至少包括在非磁性基板上沉积基底层的工艺，在基底层上形成磁记录层的工艺，快速冷却磁记录层的工艺，在磁记录层上沉积保护层的过程以及依次在保护层上施加液态润滑剂层的工艺。因此提高了单轴各向异性Ku的常数和磁性层的矫顽力Hc。

6. 发明专利

JP2003085725A Perpendicular magnetic recording medium and method of 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：JP2003085725A
公开(公告)日：2003-03-20
申请号：JP2001278280
申请日：2001-09-13
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 , NAKAMURA YOSHIHISA , MURAOKA HIROAKI , SHIMAZU TAKEHITO
IPC分类号： C23C14/06 , C23C14/34 , G11B5/64 , G11B5/65 , G11B5/667 , G11B5/738 , G11B5/851 , H01F10/12 , H01F41/32
摘要： PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording medium which is free of a shift and annihilation of write signals even under high-density recording conditions. SOLUTION: Nitrides of at least one kind of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, B, Al or Si are uniformly dispersed and incorporated at a concentration of >=1 to
摘要翻译：要解决的问题：提供即使在高密度记录条件下也不会发生写入信号的移动和湮灭的垂直磁记录介质。解决方案：以> = 1至<= 20％的浓度均匀分散并并入至少一种Ti，Zr，Hf，V，Nb，Ta，Cr，Mo，W，B，Al或Si的氮化物，构成磁记录层的稀土 - 过渡金属合金的非晶膜。结果，即使在高密度记录条件下也可以获得良好的磁特性。由非磁性基板和软磁背衬层之间施加设计成控制软磁背衬层的磁畴的由单层或多层构成的地表面层和磁畴控制层，通过该柔性磁性背衬层，地层中出现的尖峰噪声可以抑制软磁背衬层的畴壁。

7. 发明专利

JP2003077113A Perpendicular magnetic recording medium and manufacturing method therefor 有权
标题翻译：全能磁记录介质及其制造方法
公开(公告)号：JP2003077113A
公开(公告)日：2003-03-14
申请号：JP2001264516
申请日：2001-08-31
申请人： Fuji Electric Co Ltd , 富士電機株式会社
发明人： UWAZUMI HIROYUKI , SAKAI YASUSHI , OIKAWA TADAAKI , NAKAMURA MASA
IPC分类号： G11B5/64 , G11B5/65 , G11B5/66 , G11B5/73 , G11B5/738 , G11B5/851
CPC分类号： G11B5/851 , G11B5/66 , Y10S428/90 , Y10T428/24975
摘要： PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording medium having high magnetic recording density and satisfactory electromagnetic transducing characteristics and excellent in thermal stability. SOLUTION: The perpendicular magnetic recording medium has a magnetic recording layer consisting of two layers. A first magnetic layer to be a lower layer consists of ferromagnetic CoCr based alloy crystal grains and non-magnetic intercrystal consisting essentially of an oxide or a nitride and a second magnetic layer to be an upper layer consists of a rare earth-transition metal alloy amorphous film. The first and the second magnetic layers have 10-30 nm film thickness and 2-15 nm film thickness, respectively, and the a/b of the film thickness (a) of the first magnetic layer to the film thickness (b) of the second magnetic layer is specified to be >=2.
摘要翻译：要解决的问题：提供具有高磁记录密度和令人满意的电磁转换特性以及热稳定性优异的垂直磁记录介质。解决方案：垂直磁记录介质具有由两层组成的磁记录层。作为下层的第一磁性层由铁磁CoCr基合金晶粒和基本上由氧化物或氮化物组成的非磁性晶体构成，作为上层的第二磁性层由无定形的稀土 - 过渡金属合金电影。第一和第二磁性层分别具有10-30nm的膜厚度和2-15nm的膜厚度，并且第一磁性层的膜厚度（a）与膜厚度（b）的a / b 第二磁性层被指定为> = 2。

8. 发明专利

JP2003036530A 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：JP2003036530A
公开(公告)日：2003-02-07
申请号：JP2001224863
申请日：2001-07-25
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： C23C14/14 , G11B5/64 , G11B5/65 , G11B5/667 , G11B5/738 , G11B5/851 , H01F10/187
摘要： PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording medium which has no shifted or disappeared signals written even in high density and is excellent in productivity.
SOLUTION: As a non-magnetic base 1, aluminum alloy, tempered glass, crystallized glass, etc., can be used. A NiFe alloy, a Sendust (FeSiAl) alloy, etc., can be used as a soft-magnetic back lining layer 2. An intermediate layer 3 is used to magnetically separate the soft-magnetic back lining layer 2 and the magnetic recording layer 4, and a non-magnetic element or a non-magnetic alloy is used suitably. The magnetic-recording layer 4 consists of a rare-earth- elements-transition-metals alloy amorphous film. When forming the magnetic- recording layer 4, the gas pressure for membrane formation is preferably adjusted to 10 mTorr or higher but 200 mTorr, or preferably 20 mTorr or higher but 100 mTorr or lower. Currently used material can be used for the protection layer 5 and the fluid lubrication agent layer 6.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供甚至高密度地写入没有偏移或消失的信号的垂直磁记录介质，并且生产率优异。解决方案：作为非磁性基体1，可以使用铝合金，钢化玻璃，结晶玻璃等。可以使用NiFe合金，Sendust（FeSiAl）合金等作为软磁背衬层2.中间层3用于磁性分离软磁背衬层2和磁记录层4 并且适当地使用非磁性元件或非磁性合金。磁记录层4由稀土元素 - 过渡金属合金非晶膜组成。当形成磁记录层4时，用于膜形成的气体压力优选调节至10mTorr或更高但是200mTorr，或优选地为20mTorr或更高但是100mTorr或更低。目前使用的材料可以用于保护层5和流体润滑剂层6。

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

JP2003346333A Perpendicular magnetic record medium and manufacturing method therefor 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：JP2003346333A
公开(公告)日：2003-12-05
申请号：JP2002153060
申请日：2002-05-27
申请人： Fuji Electric Co Ltd , 富士電機株式会社
发明人： TAKENOIRI SHUNJI , SAKAI YASUSHI
IPC分类号： G11B5/65 , G11B5/84
摘要： PROBLEM TO BE SOLVED: To obtain a perpendicular magnetic record medium having sufficient magnetic characteristics, even if it is subjected to heat film formation.
SOLUTION: In the method for manufacturing the perpendicular magnetic record medium, softmagnetic backing layer 2, a foundation layer 3, a non- magnetic intermediate layer 4, a magnetic record layer 5, a protection film 6, and a fluid lubricant layer 7 are successively laminated on a non-magnetic substrate 1, to manufacture the vertical magnetic record medium. In the film formation of the magnetic record layer 5, a granular material where TaB or CrC is added to a magnetic material is used as a raw material. As a result, film formation by DC sputtering is enabled, and high magnetic characteristics can be obtained under heating.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了获得具有足够磁特性的垂直磁记录介质，即使其经受热成膜。解决方案：在垂直磁记录介质的制造方法中，软磁背衬层2，基础层3，非磁性中间层4，磁记录层5，保护膜6和流体润滑剂层 7依次层叠在非磁性基板1上，制造垂直磁记录介质。在磁记录层5的成膜中，使用将TaB或CrC添加到磁性材料的粒状材料作为原料。结果，可以通过DC溅射形成膜，并且在加热下可以获得高的磁特性。版权所有（C）2004，JPO

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式