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1. 发明授权

US06638596B1 Thin film magnetic head using soft magnetic film having soft magnetic characteristics of high resistivity, low coercive force, and high saturation magnetic flux density 失效
标题翻译：使用具有高电阻，低矫顽磁力和高饱和磁通密度的软磁特性的软磁膜的薄膜磁头
公开(公告)号：US06638596B1
公开(公告)日：2003-10-28
申请号：US09599498
申请日：2000-06-22
申请人： Mitsuhiro Gotoh , Hisayuki Yazawa , Yoshihiro Kanada , Mitsuo Kawasaki
发明人： Mitsuhiro Gotoh , Hisayuki Yazawa , Yoshihiro Kanada , Mitsuo Kawasaki
IPC分类号： G11B531
CPC分类号： G11B5/3109 , Y10T428/1157 , Y10T428/1171 , Y10T428/12944 , Y10T428/12951
摘要： A soft magnetic film of the invention is to improve a resistivity &rgr; while maintaining a coercive force Hc and a saturation magnetic flux density Ms in good states by adding an element X (X is one or more kinds of elements selected from O, C, N, and S). Further, a thin film magnetic head capable of coping with an increase in a recording density and an increase in a recording frequency can be provided by using the soft magnetic film in core layers.
摘要翻译：本发明的软磁性膜是通过添加元素X（X是选自O，C，N中的一种或多种元素）来改善电阻率rho，同时保持良好状态下的矫顽力Hc和饱和磁通密度Ms ，和S）。此外，通过使用芯层中的软磁性膜，可以提供能够应付记录密度增加和记录频率增加的薄膜磁头。

2. 发明授权

US07288333B2 Magnetic film and thin film magnetic head using this magnetic film 有权
标题翻译：使用这种磁性膜的磁性膜和薄膜磁头
公开(公告)号：US07288333B2
公开(公告)日：2007-10-30
申请号：US10659119
申请日：2003-09-10
申请人： Mitsuo Kawasaki , Hisayuki Yazawa , Yoshihiro Kanada
发明人： Mitsuo Kawasaki , Hisayuki Yazawa , Yoshihiro Kanada
IPC分类号： G11B5/31 , G11B5/127
CPC分类号： C25D3/562 , C25D5/18 , C25D7/001 , G11B5/3109 , G11B5/3113 , G11B5/313 , G11B5/3163 , H01F10/16 , Y10T428/115 , Y10T428/1186 , Y10T428/1193 , Y10T428/32 , Y10T428/325
摘要： A soft magnetic film of the present invention is a plated film composed of Co and Fe, and columnar crystals extending in the film thickness direction are provided. In the present invention, columnar crystals extending in the film thickness direction are provided so that an improvement in the surface roughness of the film surface and an improvement in the corrosion resistance can be achieved. Furthermore, the saturation magnetic flux density Bs can also be improved by making the crystal fine and eliminating the need for addition of the noble metal element. That is, according to a CoFe alloy of the present invention, both the corrosion resistance and the saturation magnetic flux density Bs can be improved, and specifically, the above-mentioned saturation magnetic flux density Bs can be increased to 2.35 T or more.
摘要翻译：本发明的软磁性膜是由Co和Fe组成的镀膜，并且设置在膜厚度方向上延伸的柱状晶体。在本发明中，提供了沿膜厚方向延伸的柱状晶体，从而可以实现膜表面的粗糙度的提高和耐腐蚀性的提高。此外，通过使晶体细化并且不需要添加贵金属元素，也可以提高饱和磁通密度Bs。也就是说，根据本发明的CoFe合金，可以提高耐腐蚀性和饱和磁通密度Bs，特别是上述饱和磁通密度Bs可以提高到2.35T以上。

3. 发明授权

US07433153B2 Soft magnetic film and thin film magnetic head using soft magnetic film, process for manufacturing soft magnetic film and process for manufacturing thin film magnetic head 有权
标题翻译：使用软磁膜的软磁性膜和薄膜磁头，制造软磁膜的工艺和制造薄膜磁头的工艺
公开(公告)号：US07433153B2
公开(公告)日：2008-10-07
申请号：US10235262
申请日：2002-09-05
申请人： Yoshihiro Kanada , Hisayuki Yazawa
发明人： Yoshihiro Kanada , Hisayuki Yazawa
IPC分类号： G11B5/31 , G11B5/39 , G11B23/00
CPC分类号： B82Y25/00 , G11B5/3109 , G11B5/3163 , H01F10/14 , H01F10/16 , H01F10/324 , H01F41/26
摘要： The upper magnetic pole layer and/or lower magnetic pole layer comprises a soft magnetic film having a variable region in which the chemical composition of Fe changes in the direction of thickness in at least a part thereof, and the difference of the proportions of Fe between the regions most abundant in Fe and most deficient in Fe is 4% by mass or more in the variable region. The structure of the soft magnetic film permits the saturation magnetic flux density Bs to be improved while decreasing the coercive force Hc by forming fine crystal grains, thereby enabling a thin film magnetic head excellent in high density recording to be manufactured.
摘要翻译：上磁极层和/或下磁极层包括具有可变区域的软磁性膜，其中Fe的化学组成在其至少一部分中在厚度方向上变化，并且Fe之间的比例差异 Fe最丰富，Fe含量最多的区域在可变区域中为4质量％以上。通过形成微细的晶粒，软磁性膜的结构能够提高饱和磁通密度Bs，同时降低矫顽力Hc，从而能够制造出高密度记录性优异的薄膜磁头。

4. 发明授权

US07037421B2 Thin-film magnetic head having magnetic gap formed of NiP 失效
标题翻译：具有由NiP形成的磁隙的薄膜磁头
公开(公告)号：US07037421B2
公开(公告)日：2006-05-02
申请号：US09851776
申请日：2001-05-09
申请人： Yoshihiro Kanada , Hisayuki Yazawa
发明人： Yoshihiro Kanada , Hisayuki Yazawa
IPC分类号： C25D5/18 , C25D5/50
CPC分类号： G11B5/3163 , G11B5/232 , G11B5/3133 , Y10T428/1164 , Y10T428/1179
摘要： A gap layer of a thin-film magnetic head is formed of NiP. The P content of the NiP gap layer is controlled to be within the range of 11 mass percent to 14 mass percent so that the gap layer is nonmagnetic.
摘要翻译：薄膜磁头的间隙层由NiP形成。将NiP间隙层的P含量控制在11质量％〜14质量％的范围内，使间隙层成为非磁性。

5. 发明授权

US07052560B2 Soft magnetic film and thin film magnetic head using the same 有权
标题翻译：软磁膜和薄膜磁头使用相同
公开(公告)号：US07052560B2
公开(公告)日：2006-05-30
申请号：US10659118
申请日：2003-09-10
申请人： Hisayuki Yazawa , Yoshihiro Kanada
发明人： Hisayuki Yazawa , Yoshihiro Kanada
IPC分类号： H01F1/04
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3109 , G11B5/3116 , G11B5/313 , G11B5/3146 , G11B5/3163 , G11B5/3903 , G11B5/3909 , G11B5/3967 , G11B2005/3996 , H01F10/14
摘要： A soft magnetic film is formed which is represented by the formula (FexNiy)aMob, in which 0.65≦x≦0.75 and x+y=1 are satisfied when x and y are on a mass percent ratio basis, and 0
摘要翻译：形成软磁性膜，其由下式（Fe x Ni x Ni x Sb z）a M b b b表示，当x和y以质量百分比比为基准时，满足0.65 <= x <= 0.75且x + y = 1，当a和b为开时，满足0

6. 发明授权

US06999276B2 Magnetic head with magnetic pole minimum Fe content difference and Fe content increasing toward interface with gap layer 失效
标题翻译：磁头磁极最小Fe含量差异，Fe含量随着与间隙层的界面增加而增加
公开(公告)号：US06999276B2
公开(公告)日：2006-02-14
申请号：US10135269
申请日：2002-04-29
申请人： Yoshihiro Kanada , Hisayuki Yazawa
发明人： Yoshihiro Kanada , Hisayuki Yazawa
IPC分类号： G11B5/31 , G11B5/23
CPC分类号： G11B5/3143 , G11B5/3109 , G11B5/3153 , G11B5/3163
摘要： A magnetic head includes an upper magnetic pole layer formed by electroplating in which the density of the impressed current is increased in stages every predetermined period of time. The upper magnetic pole layer contains at least 60 mass % of Fe. The difference between the maximum Fe content and the minimum Fe content of the upper magnetic pole layer within 0.3 μm from the interface with the gap layer is 6 mass % or less.
摘要翻译：磁头包括通过电镀形成的上磁极层，其中外加电流的密度每预定时间段分级地增加。上磁极层含有至少60质量％的Fe。与间隙层的界面在0.3μm以内的上磁极层的最大Fe含量与Fe含量的最小值之差为6质量％以下。

7. 发明授权

US06449122B1 Thin-film magnetic head including soft magnetic film exhibiting high saturation magnetic flux density and low coercive force 有权
标题翻译：薄膜磁头包括表现出高饱和磁通密度和低矫顽力的软磁性膜
公开(公告)号：US06449122B1
公开(公告)日：2002-09-10
申请号：US09599349
申请日：2000-06-20
申请人： Hisayuki Yazawa , Yoshihiro Kanada , Hiroaki Nakajima
发明人： Hisayuki Yazawa , Yoshihiro Kanada , Hiroaki Nakajima
IPC分类号： G11B5147
CPC分类号： G11B5/3109 , G11B5/3113 , G11B5/3967 , H01F41/26
摘要： A NiFe alloy film is formed by an electroplating process using a pulsed direct current. The resulting NiFe alloy has an average crystal grain size of not more 105 Å and an Fe content in a range of 60 percent by weight to 75 percent by weight. The NiFe alloy film exhibits a high saturation magnetic flux density and a low coercive force. A thin-film magnetic head having a lower core layer and/or an upper core layer composed of the NiFe alloy film is suitable for higher recording densities.
摘要翻译：通过使用脉冲直流的电镀工艺形成NiFe合金膜。得到的NiFe合金的平均结晶粒径不大于105，Fe含量在60重量％〜75重量％的范围内。 NiFe合金膜具有高饱和磁通密度和低矫顽力。具有由NiFe合金膜构成的下芯层和/或上芯层的薄膜磁头适合于更高的记录密度。

8. 发明授权

US07113367B2 FeNiRe soft magnetic film and thin film magnetic head using the same for simultaneous adjustment of resistivity and saturated magnetic flux density 有权
标题翻译： FeNiRe软磁膜和薄膜磁头用于同时调节电阻率和饱和磁通密度
公开(公告)号：US07113367B2
公开(公告)日：2006-09-26
申请号：US10660165
申请日：2003-09-10
申请人： Hisayuki Yazawa , Yoshihiro Kanada
发明人： Hisayuki Yazawa , Yoshihiro Kanada
IPC分类号： G11B5/147 , C23C18/54
CPC分类号： B82Y25/00 , B82Y10/00 , C25D3/562 , C25D5/18 , C25D7/001 , G11B5/3109 , G11B5/3116 , G11B5/313 , G11B5/3163 , G11B5/3903 , G11B5/3909 , G11B5/3967 , G11B2005/3996 , H01F10/14
摘要： A soft magnetic film composed of an alloy represented by the formula FeNiRe is used for forming a lower core layer and/or an upper core layer. Since having a high saturated magnetic flux density, a high resistivity, superior corrosion resistance, and a small loss in a high frequency signal region, the FeNiRe alloy can be used for forming a highly reliable thin film magnetic head.
摘要翻译：由式FeNiRe表示的合金构成的软磁性膜用于形成下芯层和/或上芯层。由于具有高饱和磁通密度，高电阻率，优异的耐腐蚀性和高频信号区域的小损耗，因此可以使用FeNiRe合金来形成高可靠性的薄膜磁头。

9. 发明授权

US06600629B2 Thin film magnetic head having gap layer made of nip and method of manufacturing the same 失效
公开(公告)号：US06600629B2
公开(公告)日：2003-07-29
申请号：US10005067
申请日：2001-12-03
申请人： Yoshihiro Kanada , Hisayuki Yazawa
发明人： Yoshihiro Kanada , Hisayuki Yazawa
IPC分类号： G11B5147
CPC分类号： G11B5/313 , G11B5/235 , G11B5/3106 , G11B5/3133 , G11B5/40
摘要： A gap layer is formed by electroplating NiP using a pulsed current. This can suppress crystallization of Ni due to epitaxial growth near the interface of the gap layer. Therefore, a large amount of nonmagnetic element such as P can be contained, and the vicinity of the interface can be put into an amorphous state to improve corrosion resistance.

10. 发明授权

US06560076B1 Thin-film magnetic write head 失效
标题翻译：薄膜磁写头
公开(公告)号：US06560076B1
公开(公告)日：2003-05-06
申请号：US09651627
申请日：2000-08-30
申请人： Hisayuki Yazawa , Yoshihiro Kanada
发明人： Hisayuki Yazawa , Yoshihiro Kanada
IPC分类号： G11B533
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3103 , G11B5/3163 , G11B5/332 , G11B5/3967 , G11B2005/3996
摘要： A thin-film magnetic write head includes a lower core layer composed of a magnetic material and an upper core layer composed of a magnetic material. The upper core layer is opposed to the lower core layer with a nonmagnetic gap layer therebetween at a surface facing a recording medium. The thin-film magnetic write head writes data to be read by a thin-film magnetic read head, which has a track width Tr and a distance H2 between an upper shielding layer and a lower shielding layer. The length in the track width direction at a magnetic contact between the gap layer and the upper core layer is 1 &mgr;m or less. The formula A≦H1−H2 is satisfied A is a difference between the height of the upper surface of the gap layer on a center line in the track width direction and the height of the upper surface of the gap layer at a distance Tr/2 from the center line in the track width direction. H1 is a gap length of the gap layer.
摘要翻译：薄膜磁写头包括由磁性材料构成的下芯层和由磁性材料构成的上芯层。上芯层与面向记录介质的表面之间具有非磁性间隙层的下芯层相对。薄膜磁性写入头写入要由上磁屏蔽层和下屏蔽层之间具有磁道宽度Tr和距离H2的薄膜磁读头读取的数据。间隙层和上芯层之间的磁接触处的轨道宽度方向上的长度为1um以下。公式A <= H1-H2满足A是在轨道宽度方向上的中心线上的间隙层的上表面的高度与间隔层的上表面的高度之间的距离Tr / 2从轨道宽度方向的中心线。 H1是间隙层的间隙长度。

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