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1.发明授权Testing method of wafer with thin-film magnetic heads and manufacturing method of thin-film magnetic head 有权具有薄膜磁头的晶片测试方法和薄膜磁头的制造方法公开(公告)号：US08072231B2
公开(公告)日：2011-12-06
申请号：US12473647
申请日：2009-05-28
CPC分类号： G11B5/3166 , G11B5/1278 , G11B5/3116 , G11B5/3169 , G11B5/3173
摘要： A testing method of a wafer provided with a plurality of thin-film magnetic heads is provided. Each of the plurality of thin-film magnetic heads includes a main pole layer, a first test pad formed on the wafer and electrically connected with an extended top end section of the main pole layer and a second test pad formed on the wafer and electrically connected with a back end section of the main pole layer. The testing method includes a step of measuring an electrical resistance between the first test pad and the second test pad, a step of judging whether the measured electrical resistance is within a set range, and a step of discriminating that the thin-film magnetic head is a non-defective product when the measured electrical resistance is within the set range.
摘要翻译： 提供了具有多个薄膜磁头的晶片的测试方法。 多个薄膜磁头中的每一个包括主极层，形成在晶片上并与主极层的扩展顶端部电连接的第一测试焊盘和形成在晶片上的电连接的第二测试焊盘 具有主极层的后端部分。 测试方法包括测量第一测试焊盘和第二测试焊盘之间的电阻的步骤，判断测量的电阻是否在设定范围内的步骤，以及鉴别薄膜磁头是否为 当测量的电阻在设定范围内时，该产品是无缺陷产品。
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2.发明申请公开(公告)号：US20080253034A1
公开(公告)日：2008-10-16
申请号：US11713740
申请日：2007-03-05
CPC分类号： G11B5/1278 , G11B5/3146 , G11B5/3163
摘要： The present invention is directed to providing a perpendicular magnetic write head which can suppress unintended erasure of information written on a write medium at a non-writing time by optimizing a magnetic domain structure of main component elements that are engaged in writing operation. In the perpendicular magnetic write head, an auxiliary magnetic pole layer is disposed on a trailing or leading side of a main magnetic pole layer, the auxiliary magnetic pole layer being recessed from the main magnetic pole layer. When the main magnetic pole layer has a tensile stress as its internal stress, a nonmagnetic layer disposed in a layer same as the auxiliary magnetic pole layer and in an area in front of the auxiliary magnetic pole layer, also has a tensile stress as its internal stress.
摘要翻译： 本发明旨在提供一种垂直磁性写入头，其可以通过优化从事写入操作的主要组成元件的磁畴结构来抑制在非写入时刻写入写入介质的信息的意外擦除。 在垂直写磁头中，辅助磁极层设置在主磁极层的后侧或前侧，辅助磁极层从主磁极层凹入。 当主磁极层作为其内应力具有拉伸应力时，设置在与辅助磁极层相同的层中的非磁性层和在辅助磁极层前面的区域中也具有作为其内部的拉伸应力 强调。
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3.发明授权公开(公告)号：US08000064B2
公开(公告)日：2011-08-16
申请号：US12000519
申请日：2007-12-13
申请人： Hidetaka Kawano , Hiromichi Umehara , Takamitsu Sakamoto , Koichi Otani , Noriaki Kasahara , Naoto Matono
发明人： Hidetaka Kawano , Hiromichi Umehara , Takamitsu Sakamoto , Koichi Otani , Noriaki Kasahara , Naoto Matono
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3146 , G11B5/315 , G11B5/3163 , Y10T29/49032 , Y10T29/49055 , Y10T156/10
摘要： A perpendicular recording thin-film magnetic head comprises a main magnetic pole having a tip main magnetic pole part extending in a height direction from a medium-opposing surface and a base main magnetic pole part connected to the tip main magnetic pole part on a side opposite from the medium-opposing surface side and wider than the tip main magnetic pole part in a track width direction; a return yoke extending in the height direction from the medium-opposing surface and magnetically coupling with the base main magnetic pole part at a position distanced from the medium-opposing surface in the height direction, while opposing the tip main magnetic pole part through a write gap layer in a bit length direction in the medium-opposing surface; and a main magnetic pole adjacent magnetic shield layer extending along at least part of side faces of the main magnetic pole other than the medium-opposing surface as seen in a laminating direction, while holding a nonmagnetic layer between the main magnetic pole and the main magnetic pole adjacent magnetic shield layer.
摘要翻译： 垂直记录薄膜磁头包括：主磁极，其具有从介质相对表面在高度方向上延伸的尖端主磁极部分和在相对侧的一侧连接到尖端主磁极部分的基极主磁极部分 从所述中等相对面侧开始并且比所述尖端主磁极部在轨道宽度方向上宽; 回转轭，其从中间相对表面在高度方向上延伸，并且在距离介质相对表面在高度方向上远离的位置处与基部主磁极部分磁耦合，同时通过写入方式与尖端主磁极部分相对 中间相对表面中的位长度方向上的间隙层; 以及与沿着层叠方向观察的中间相对面以外的主磁极的至少一部分的侧面相邻的磁屏蔽层的主磁极，同时在主磁极和主磁体之间保持非磁性层 极相邻磁屏蔽层。
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4.发明授权公开(公告)号：US07796359B2
公开(公告)日：2010-09-14
申请号：US11892541
申请日：2007-08-23
申请人： Koichi Otani , Hiromichi Umehara , Naoto Matono , Takamitsu Sakamoto , Noriaki Kasahara , Hidetaka Kawano
发明人： Koichi Otani , Hiromichi Umehara , Naoto Matono , Takamitsu Sakamoto , Noriaki Kasahara , Hidetaka Kawano
IPC分类号： G11B5/127
CPC分类号： G11B5/3146 , G11B5/11 , G11B5/1278 , G11B5/3116 , G11B5/3133 , G11B5/6064
摘要： A magnetic head includes a pole layer, a first and a second shield disposed to sandwich the pole layer, and a nonmagnetic layer disposed around the first shield. The pole layer includes a first portion having an end face located in a medium facing surface, and a second portion that is located farther from the medium facing surface than is the first portion. The second portion is greater in thickness than the first portion. A bottom surface of the second portion is located closer to a substrate than is a bottom surface of the first portion. The first shield has a first top surface portion opposed to the bottom surface of the first portion with the first gap layer in between. The nonmagnetic layer has a second top surface portion opposed to the bottom surface of the second portion with the first gap layer in between. A difference in level is formed between the first and the second top surface portion such that the second top surface portion is located closer to the substrate than is the first top surface portion.
摘要翻译： 磁头包括极层，设置成夹住极层的第一和第二屏蔽件以及围绕第一屏蔽件设置的非磁性层。 极层包括具有位于介质面向表面中的端面的第一部分和比第一部分更远离介质面向表面的第二部分。 第二部分的厚度大于第一部分。 第二部分的底表面比第一部分的底表面更靠近基底。 第一屏蔽具有与第一部分的底表面相对的第一顶表面部分，其间具有第一间隙层。 非磁性层具有与第二部分的底表面相对的第二顶表面部分，其间具有第一间隙层。 在第一顶表面部分和第二顶表面部分之间形成水平差，使得第二顶表面部分比第一顶表面部分更靠近基底。
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5.发明申请Thin film magnetic head, head gimbal assembly, head arm assembly, magnetic disk device and method of forming thin film magnetic head 有权薄膜磁头，头万向架组件，头臂组件，磁盘装置和薄膜磁头形成方法公开(公告)号：US20080253032A1
公开(公告)日：2008-10-16
申请号：US11730153
申请日：2007-03-29
CPC分类号： G11B5/3133 , G11B5/3163
摘要： A thin film magnetic head is provided, in which thermal protrusion can be suppressed. The thin film magnetic head includes a main magnetic pole layer which conducts a magnetic flux into the recording medium so that the recording medium is magnetized in a direction perpendicular to a surface of the recording medium, a first return yoke layer provided in a trailing side of the main magnetic pole layer, and has a recess in a top surface, a second return yoke layer provided so as to fill at least the recess of the first return yoke layer, and a thermal expansion suppression layer provided in a trailing side of the second return yoke layer. Thus, since the thermal expansion suppression layer can be provided on a surface having no recess, a possibility of a crack in the thermal expansion suppression layer can be eliminated.
摘要翻译： 提供一种能够抑制热突起的薄膜磁头。 薄膜磁头包括主磁极层，其将磁通传导到记录介质中，使得记录介质沿与记录介质的表面垂直的方向被磁化;第一返回磁轭层设置在记录介质的后侧 主磁极层，并且在顶面具有凹部，设置成填充至少第一返回磁轭层的凹部的第二返回磁轭层和设置在第二磁轭层的后侧的热膨胀抑制层 返回磁轭层。 因此，由于可以在没有凹部的表面上设置热膨胀抑制层，因此可以消除热膨胀抑制层中的裂纹的可能性。
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6.发明授权Perpendicular magnetic write head having a structure that suppresses unintended erasure of information on a write medium at a non-writing time 有权垂直磁性写入头具有在非写入时间抑制写入介质上的信息的意外擦除的结构公开(公告)号：US07808743B2
公开(公告)日：2010-10-05
申请号：US11713740
申请日：2007-03-05
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/3146 , G11B5/3163
摘要： A perpendicular magnetic write head includes an auxiliary magnetic pole layer disposed on a trailing or leading side of a main magnetic pole layer, the auxiliary magnetic pole layer being recessed from the main magnetic pole layer. A nonmagnetic layer is disposed in a layer same as the auxiliary magnetic pole layer and in front of the auxiliary magnetic pole layer, the nonmagnetic layer having an internal stress of a direction same as that of the main magnetic pole layer, and a write shield layer is disposed in a layer same as the auxiliary magnetic pole layer and in front of the auxiliary magnetic pole layer, the write shield layer being separated from the main magnetic pole layer with a gap layer in between. The nonmagnetic layer is arranged to fill up a space between the auxiliary magnetic pole layer and the write shield layer.
摘要翻译： 垂直磁性写头包括设置在主磁极层的后侧或前侧的辅助磁极层，辅助磁极层从主磁极层凹入。 非磁性层设置在与辅助磁极层相同的层中，并且在辅助磁极层的前方，具有与主磁极层的内部应力相同的内部应力的非磁性层和写入屏蔽层 设置在与辅助磁极层相同的层中，并且在辅助磁极层的前面，写入屏蔽层与主磁极层之间具有间隙层分离。 非磁性层被布置成填充辅助磁极层和写入屏蔽层之间的空间。
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7.发明授权公开(公告)号：US07787215B2
公开(公告)日：2010-08-31
申请号：US11730153
申请日：2007-03-29
IPC分类号： G11B5/147
CPC分类号： G11B5/3133 , G11B5/3163
摘要： A thin film magnetic head is provided, in which thermal protrusion can be suppressed. The thin film magnetic head includes a main magnetic pole layer which conducts a magnetic flux into the recording medium so that the recording medium is magnetized in a direction perpendicular to a surface of the recording medium, a first return yoke layer provided in a trailing side of the main magnetic pole layer, and has a recess in a top surface, a second return yoke layer provided so as to fill at least the recess of the first return yoke layer, and a thermal expansion suppression layer provided in a trailing side of the second return yoke layer. Thus, since the thermal expansion suppression layer can be provided on a surface having no recess, a possibility of a crack in the thermal expansion suppression layer can be eliminated.
摘要翻译： 提供一种能够抑制热突起的薄膜磁头。 薄膜磁头包括主磁极层，其将磁通传导到记录介质中，使得记录介质沿与记录介质的表面垂直的方向被磁化;第一返回磁轭层设置在记录介质的后侧 主磁极层，并且在顶面具有凹部，设置成填充至少第一返回磁轭层的凹部的第二返回磁轭层和设置在第二磁轭层的后侧的热膨胀抑制层 返回磁轭层。 因此，由于可以在没有凹部的表面上设置热膨胀抑制层，因此可以消除热膨胀抑制层中的裂纹的可能性。
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8.发明申请公开(公告)号：US20090052094A1
公开(公告)日：2009-02-26
申请号：US11892541
申请日：2007-08-23
申请人： Koichi Otani , Hiromichi Umehara , Naoto Matono , Takamitsu Sakamoto , Noriaki Kasahara , Hidetaka Kawano
发明人： Koichi Otani , Hiromichi Umehara , Naoto Matono , Takamitsu Sakamoto , Noriaki Kasahara , Hidetaka Kawano
IPC分类号： G11B5/33
CPC分类号： G11B5/3146 , G11B5/11 , G11B5/1278 , G11B5/3116 , G11B5/3133 , G11B5/6064
摘要： A magnetic head includes a pole layer, a first and a second shield disposed to sandwich the pole layer, and a nonmagnetic layer disposed around the first shield. The pole layer includes a first portion having an end face located in a medium facing surface, and a second portion that is located farther from the medium facing surface than is the first portion. The second portion is greater in thickness than the first portion. A bottom surface of the second portion is located closer to a substrate than is a bottom surface of the first portion. The first shield has a first top surface portion opposed to the bottom surface of the first portion with the first gap layer in between. The nonmagnetic layer has a second top surface portion opposed to the bottom surface of the second portion with the first gap layer in between. A difference in level is formed between the first and the second top surface portion such that the second top surface portion is located closer to the substrate than is the first top surface portion.
摘要翻译： 磁头包括极层，设置成夹住极层的第一和第二屏蔽件以及围绕第一屏蔽件设置的非磁性层。 极层包括具有位于介质面向表面中的端面的第一部分和比第一部分更远离介质面向表面的第二部分。 第二部分的厚度大于第一部分。 第二部分的底表面比第一部分的底表面更靠近基底。 第一屏蔽具有与第一部分的底表面相对的第一顶表面部分，其间具有第一间隙层。 非磁性层具有与第二部分的底表面相对的第二顶表面部分，其间具有第一间隙层。 在第一顶表面部分和第二顶表面部分之间形成水平差，使得第二顶表面部分比第一顶表面部分更靠近基底。
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9.发明授权Magnetic head for perpendicular magnetic recording with a shield and a pole layer having a top surface with first and second portions at different heights, and method of manufacturing same 有权用于具有屏蔽的垂直磁记录的磁头和具有在不同高度处具有第一和第二部分的顶表面的极层及其制造方法公开(公告)号：US07948716B2
公开(公告)日：2011-05-24
申请号：US11806828
申请日：2007-06-04
申请人： Naoto Matono , Koichi Otani , Tatsuya Harada , Noriaki Kasahara , Takamitsu Sakamoto , Hiroaki Kawashima , Hirotaka Gomi , Kenkichi Anagawa , Norikazu Ota
发明人： Naoto Matono , Koichi Otani , Tatsuya Harada , Noriaki Kasahara , Takamitsu Sakamoto , Hiroaki Kawashima , Hirotaka Gomi , Kenkichi Anagawa , Norikazu Ota
IPC分类号： G11B5/33
CPC分类号： G11B5/3146 , G11B5/11 , G11B5/1278 , G11B5/3116 , G11B5/6064
摘要： A magnetic head includes: a coil; a pole layer; a shield having an end face located in a medium facing surface forward of an end face of the pole layer along a direction of travel of a recording medium; a gap layer between the shield and the pole layer; and a substrate on which the foregoing elements are stacked. The top surface of the pole layer includes: first and second portions with a difference in height therebetween; and a third portion connecting the first and second portions to each other. The first portion has an edge located in the medium facing surface, and the second portion is located farther from the medium facing surface and from the substrate than the first portion. The magnetic head further includes a nonmagnetic layer disposed between the second portion and the gap layer. The nonmagnetic layer has a surface touching the second portion, the surface having an edge located at the boundary between the second and third portions. The nonmagnetic layer has a thickness equal to or greater than the difference in height between the first and second portions.
摘要翻译： 磁头包括：线圈; 极层; 屏蔽，其具有沿着记录介质的行进方向位于所述极层的端面的前方的面向介质的表面中的端面; 屏蔽层和极层之间的间隙层; 以及其上堆叠上述元件的基板。 极层的顶表面包括：第一和第二部分之间的高度差异; 以及将第一和第二部分彼此连接的第三部分。 第一部分具有位于介质面向表面中的边缘，并且第二部分位于比第一部分更远离介质面向表面和基板的位置。 磁头还包括设置在第二部分和间隙层之间的非磁性层。 非磁性层具有接触第二部分的表面，该表面具有位于第二和第三部分之间的边界处的边缘。 非磁性层的厚度等于或大于第一和第二部分之间的高度差。
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10.发明申请公开(公告)号：US20090273863A1
公开(公告)日：2009-11-05
申请号：US12000519
申请日：2007-12-13
申请人： Hidetaka Kawano , Hiromichi Umehara , Takamitsu Sakamoto , Koichi Otani , Noriaki Kasahara , Naoto Matono
发明人： Hidetaka Kawano , Hiromichi Umehara , Takamitsu Sakamoto , Koichi Otani , Noriaki Kasahara , Naoto Matono
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3146 , G11B5/315 , G11B5/3163 , Y10T29/49032 , Y10T29/49055 , Y10T156/10
摘要： A perpendicular recording thin-film magnetic head comprises a main magnetic pole having a tip main magnetic pole part extending in a height direction from a medium-opposing surface and a base main magnetic pole part connected to the tip main magnetic pole part on a side opposite from the medium-opposing surface side and wider than the tip main magnetic pole part in a track width direction; a return yoke extending in the height direction from the medium-opposing surface and magnetically coupling with the base main magnetic pole part at a position distanced from the medium-opposing surface in the height direction, while opposing the tip main magnetic pole part through a write gap layer in a bit length direction in the medium-opposing surface; and a main magnetic pole adjacent magnetic shield layer extending along at least part of side faces of the main magnetic pole other than the medium-opposing surface as seen in a laminating direction, while holding a nonmagnetic layer between the main magnetic pole and the main magnetic pole adjacent magnetic shield layer.
摘要翻译： 垂直记录薄膜磁头包括：主磁极，其具有从介质相对表面在高度方向上延伸的尖端主磁极部分和在相对侧的一侧连接到尖端主磁极部分的基极主磁极部分 从所述中等相对面侧开始并且比所述尖端主磁极部在轨道宽度方向上宽; 回转轭，其从中间相对表面在高度方向上延伸，并且在距离介质相对表面在高度方向上远离的位置处与基部主磁极部分磁耦合，同时通过写入方式与尖端主磁极部分相对 中间相对表面中的位长度方向上的间隙层; 以及与沿着层叠方向观察的中间相对面以外的主磁极的至少一部分的侧面相邻的磁屏蔽层的主磁极，同时在主磁极和主磁体之间保持非磁性层 极相邻磁屏蔽层。
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