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1. 发明授权

EP0463753B1 Magnetic pole configuration for high density thin film recording head 失效
标题翻译：用于高密度记录薄膜记录头磁极
公开(公告)号：EP0463753B1
公开(公告)日：1997-03-05
申请号：EP91305094.4
申请日：1991-06-05
申请人： QUANTUM CORPORATION
发明人： Shukovsky, Harold B. , Batra, Sharat , Mallary, Michael L.
IPC分类号： G11B5/127 , G11B5/31 , G11B5/21 , G11B5/147
CPC分类号： G11B5/3153 , G11B5/3113 , G11B5/3163

2. 发明公开

EP0396227A3 Magnetic devices with enhanced poles 失效转让
标题翻译：带增强波段的磁性装置
公开(公告)号：EP0396227A3
公开(公告)日：1991-01-09
申请号：EP90302360.4
申请日：1990-03-06
申请人： QUANTUM CORPORATION
发明人： Shukovsky, Harold B. , Martin, Michelle , Mallary, Michael , Sidman, Alan Lee
IPC分类号： G11B5/31 , H01F41/26
CPC分类号： C25D3/562 , G11B5/3109 , G11B5/3113 , G11B5/3163 , H01F41/26
摘要： A process resulting in enhanced pole performance, relative to permalloy poles, in narrow track magnetic devices. A preferred process includes increasing the anisotropy field of the pole material while maintaining an acceptable coercivity level and near zero magnetostriction. One embodiment utilizes a NiCoFe alloy containing 22% cobalt by weight, heat treated in an easy axis magnetic field in a non-oxidizing atmosphere. This process achieves favorable domain structures at narrow pole tip widths.

3. 发明公开

EP0353911A3 Flux spreading thin film magnetic devices 失效转让
标题翻译：磁通扩展薄膜磁性器件
公开(公告)号：EP0353911A3
公开(公告)日：1993-03-17
申请号：EP89307389.0
申请日：1989-07-20
申请人： QUANTUM CORPORATION
发明人： Mallary, Michael , Shukovsky, Harold B.
IPC分类号： G11B5/31 , H01F10/08
CPC分类号： B82Y25/00 , B82Y40/00 , G01R33/02 , G11B5/3113 , G11B5/3153 , G11B5/332 , G11C11/14 , H01F10/30 , H01F10/32 , H01F41/302 , Y10S428/90 , Y10S428/928 , Y10T428/1186 , Y10T428/12465 , Y10T428/12597 , Y10T428/265
摘要： One aspect of the invention is a method of flux conduction comprising providing a structure with anisotropy not purely in the transverse in-plane direction such that flux spreading into the transverse in-plane direction can occur by rotation. Another aspect includes a method for producing a thin film magnetic device capable of conducting signal flux along a first axis, having at least two active magnetic layers for at least one pole, a first of the active magnetic layers having domains which are oriented in a first direction at rest and a second of the active magnetic layers has domains which are oriented in a second direction at rest. The layers are coupled to each other such that signal flux can flow therebetween. In another aspect, a thin film magnetic device having at least one set of magnetic domains is capable of conducting signal flux along a first axis, having at least one set of magnetic domains, a first of the magnetic domains is capable of conducting flux in a first direction at an angle to the first axis, a second of said magnetic domains is capable of conducting flux in a second direction other than the first direction, the domains coupled to each other such that signal flux can flow along the first axis. In yet another aspect, each of the domains of the set is capable of conducting signal flux in a first and a second in-plane direction. Apparatus includes a thin film magnetic recording device having at least one pole with two magnetic layers and capable of conducting signal flux, a first of the magnetic layers having domains oriented in a first direction, a second of said magnetic layers having domains oriented in a second distinct direction, the layers coupled to each other such that signal flux can flow therebetween. The layers may be at right angles to each other, one layer parallel to the axis of signal flux conduction, or may be canted at other angles in symmetry with the axis of signal flux conduction. Another apparatus includes a magnetic conduction path defined by a series of domains, some domains at least capable of rotation into a first low reluctance path, some domains at least capable of rotation into a second low reluctance path.

4. 发明公开

EP0396227A2 Magnetic devices with enhanced poles 失效转让
标题翻译： Magnetische Vorrichtungen mitvergrössertenPolen。
公开(公告)号：EP0396227A2
公开(公告)日：1990-11-07
申请号：EP90302360.4
申请日：1990-03-06
申请人： QUANTUM CORPORATION
发明人： Shukovsky, Harold B. , Martin, Michelle , Mallary, Michael , Sidman, Alan Lee
IPC分类号： G11B5/31 , H01F41/26
CPC分类号： C25D3/562 , G11B5/3109 , G11B5/3113 , G11B5/3163 , H01F41/26
摘要： A process resulting in enhanced pole performance, relative to permalloy poles, in narrow track magnetic devices. A preferred process includes increasing the anisotropy field of the pole material while maintaining an acceptable coercivity level and near zero magnetostriction. One embodiment utilizes a NiCoFe alloy containing 22% cobalt by weight, heat treated in an easy axis magnetic field in a non-oxidizing atmosphere. This process achieves favorable domain structures at narrow pole tip widths.
摘要翻译：相对于坡莫合金极，在窄轨磁性装置中产生增强极性能的工艺。优选的方法包括增加极材料的各向异性场，同时保持可接受的矫顽力水平和接近零的磁致伸缩。一个实施例使用含有22重量％钴的NiCoFe合金，在非氧化气氛中在容易轴磁场中进行热处理。该方法在窄极尖宽度处获得有利的结构域结构。

5. 发明授权

EP0353911B1 Flux spreading thin film magnetic devices 失效转让
标题翻译：用于流传播磁性薄膜器件
公开(公告)号：EP0353911B1
公开(公告)日：1996-01-31
申请号：EP89307389.0
申请日：1989-07-20
申请人： QUANTUM CORPORATION
发明人： Mallary, Michael , Shukovsky, Harold B.
IPC分类号： G11B5/31 , H01F10/08
CPC分类号： B82Y25/00 , B82Y40/00 , G01R33/02 , G11B5/3113 , G11B5/3153 , G11B5/332 , G11C11/14 , H01F10/30 , H01F10/32 , H01F41/302 , Y10S428/90 , Y10S428/928 , Y10T428/1186 , Y10T428/12465 , Y10T428/12597 , Y10T428/265

6. 发明授权

EP0396227B1 Magnetic devices with enhanced poles 失效转让
标题翻译：磁性器件与改善波兰。
公开(公告)号：EP0396227B1
公开(公告)日：1995-05-17
申请号：EP90302360.4
申请日：1990-03-06
申请人： QUANTUM CORPORATION
发明人： Shukovsky, Harold B. , Martin, Michelle , Mallary, Michael , Sidman, Alan Lee
IPC分类号： G11B5/31 , H01F41/26
CPC分类号： C25D3/562 , G11B5/3109 , G11B5/3113 , G11B5/3163 , H01F41/26

7. 发明公开

EP0463753A1 Magnetic pole configuration for high density thin film recording head 失效
标题翻译： Dünnfilmaufzeichnungskopfmit Magnetpolkonfiguration zur Aufzeichnung mit hoher Dichte。
公开(公告)号：EP0463753A1
公开(公告)日：1992-01-02
申请号：EP91305094.4
申请日：1991-06-05
申请人： QUANTUM CORPORATION
发明人： Shukovsky, Harold B. , Batra, Sharat , Mallary, Michael L.
IPC分类号： G11B5/127 , G11B5/31 , G11B5/21 , G11B5/147
CPC分类号： G11B5/3153 , G11B5/3113 , G11B5/3163
摘要： A thin film magnetic recording head for high-density recording applications. The head includes a pole formed from at least two ferromagnetic material layers with one layer having high anisotropy (H k ) and low permeability (µ), and the other layer having low H k and high µ. The high H k layer provides the lower magnetic impedance flux path in the tip region and the low H k layer provides the lower magnetic impedance path in the yoke region of the head. A non-magnetic film may be disposed between the layers, with a thickness chosen to minimize domain flux coupling of the two magnetic layers, while allowing magnetic signal flux transfer between layers at an appropriate point between the tip and the yoke. The pole may be sculpted so that the low H k layer extends only partially into the tip region, or so that the high H k layer extends only partially into the yoke. Alternatively, the invention may use a laminated, high permeability layer and a homogeneous layer in place of the high H k and low H k layers.
摘要翻译：一种用于高密度记录应用的薄膜磁记录头。头包括由至少两个具有高各向异性（Hk）和低磁导率（μ）的一层的铁磁材料层形成的极，另一层具有低的Hk和高的mu。高Hk层在尖端区域中提供较低的磁阻抗通量，而低Hk层在头部磁轭区域提供较低的磁阻抗路径。可以在层之间设置非磁性膜，其厚度被选择为最小化两个磁性层的磁通量耦合，同时允许在尖端和磁轭之间的适当点处的层之间的磁信号磁通传递。极可以被雕刻，使得低Hk层仅部分地延伸到尖端区域，或者使得高Hk层仅部分地延伸到轭中。或者，本发明可以使用层叠的高透过性层和均匀层代替高Hk和低Hk层。

8. 发明公开

EP0353911A2 Flux spreading thin film magnetic devices 失效转让
标题翻译： MagnetischeDünnfilmvorrichtungenfürFlussausbreitung。
公开(公告)号：EP0353911A2
公开(公告)日：1990-02-07
申请号：EP89307389.0
申请日：1989-07-20
申请人： QUANTUM CORPORATION
发明人： Mallary, Michael , Shukovsky, Harold B.
IPC分类号： G11B5/31 , H01F10/08
CPC分类号： B82Y25/00 , B82Y40/00 , G01R33/02 , G11B5/3113 , G11B5/3153 , G11B5/332 , G11C11/14 , H01F10/30 , H01F10/32 , H01F41/302 , Y10S428/90 , Y10S428/928 , Y10T428/1186 , Y10T428/12465 , Y10T428/12597 , Y10T428/265
摘要： One aspect of the invention is a method of flux conduction comprising providing a structure with anisotropy not purely in the transverse in-plane direction such that flux spreading into the transverse in-plane direction can occur by rotation. Another aspect includes a method for producing a thin film magnetic device capable of conducting signal flux along a first axis, having at least two active magnetic layers for at least one pole, a first of the active magnetic layers having domains which are oriented in a first direction at rest and a second of the active magnetic layers has domains which are oriented in a second direction at rest. The layers are coupled to each other such that signal flux can flow therebetween. In another aspect, a thin film magnetic device having at least one set of magnetic domains is capable of conducting signal flux along a first axis, having at least one set of magnetic domains, a first of the magnetic domains is capable of conducting flux in a first direction at an angle to the first axis, a second of said magnetic domains is capable of conducting flux in a second direction other than the first direction, the domains coupled to each other such that signal flux can flow along the first axis. In yet another aspect, each of the domains of the set is capable of conducting signal flux in a first and a second in-plane direction.
Apparatus includes a thin film magnetic recording device having at least one pole with two magnetic layers and capable of conducting signal flux, a first of the magnetic layers having domains oriented in a first direction, a second of said magnetic layers having domains oriented in a second distinct direction, the layers coupled to each other such that signal flux can flow therebetween. The layers may be at right angles to each other, one layer parallel to the axis of signal flux conduction, or may be canted at other angles in symmetry with the axis of signal flux conduction. Another apparatus includes a magnetic conduction path defined by a series of domains, some domains at least capable of rotation into a first low reluctance path, some domains at least capable of rotation into a second low reluctance path.
摘要翻译：本发明的一个方面是一种磁通传导方法，其包括提供不纯粹在横向面内方向上的各向异性的结构，使得通过旋转而扩展到横向面内方向的磁通。另一方面包括一种制造能够沿着第一轴传导信号通量的薄膜磁性装置的方法，所述薄膜磁性装置具有用于至少一个极的至少两个有源磁性层，所述有源磁性层中的第一个具有以第一活性磁性层的静止方向和第二活性磁性层具有在静止时沿第二方向取向的区域。这些层彼此耦合，使得信号通量可以在它们之间流动。另一方面，具有至少一组磁畴的薄膜磁性装置能够沿着具有至少一组磁畴的第一轴传导信号通量，第一磁畴能够在第一方向与第一轴成一定角度，所述第二磁畴能够沿除了第一方向以外的第二方向传导磁通，所述磁畴彼此耦合，使得信号通量可沿第一轴流动。在另一方面，该组的每个区域能够在第一和第二平面内方向上传导信号通量。装置包括薄膜磁记录装置，其具有至少一个具有两个磁性层并且能够传导信号通量的磁极，第一磁层具有沿第一方向取向的畴，所述磁性层中的第二磁畴具有以第二方向取向的畴这些层彼此耦合，使得信号通量可以在它们之间流动。这些层可以彼此成直角，与信号通量传导的轴平行的一个层，或者可以以与信号通量传导的轴对称的其它角度倾斜。另一种装置包括由一系列区域限定的磁传导路径，一些域至少能够旋转到第一低磁阻路径中，一些域至少能够旋转到第二低磁阻路径。

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