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公开(公告)号：US4803338A
公开(公告)日：1989-02-07
申请号：US777
申请日：1987-01-06
摘要： In a magnetic head employing a metallic ferromagnetic material for portions defining a transducing gap, an oxide film or carbide film and a nonmagnetic metal film are provided in this order on each of track width narrowing grooves, and glass is packed on the nonmagnetic metal film, thereby preventing the deteriorations of magnetic characteristics ascribable to the reaction between the metallic ferromagnetic material and the glass and the production of bubbles ascribable to the reaction between the protective films and the glass, and to achieve the enhancements of recording and reproducing characteristics, the prevention of damages to a recording medium surface, the increase of a head lifetime and the rise of the available percentage of manufacture of the heads. When a glass film is further provided on the nonmagnetic metal film and the glass is packed thereon, more excellent effects are achieved.
摘要翻译： 在用于限定换能间隙的部分的金属铁磁材料的磁头中，依次在每个轨道宽度变窄槽上设置氧化膜或碳化物膜和非磁性金属膜，玻璃填充在非磁性金属膜上， 从而防止归因于金属铁磁材料和玻璃之间的反应的磁特性的劣化以及由于保护膜和玻璃之间的反应引起的气泡的产生，并且为了实现记录和再现特性的增强，防止 对记录介质表面的损坏，头部寿命的增加和头部制造的可用百分比的上升。 当在非磁性金属膜上进一步设置玻璃膜并且玻璃被包装在其上时，获得更好的效果。
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公开(公告)号：US4769729A
公开(公告)日：1988-09-06
申请号：US872287
申请日：1986-06-10
摘要： A magnetic head includes ferromagnetic amorphous alloy multi-layer films each composed of an alternate lamination of ferromagnetic amorphous alloy layers and magnetic spacer layers. The thickness of each ferromagnetic amorphous alloy layer is of 1 .mu.m to 10 .mu.m. The thickness of each magnetic spacer layer is of 0.01 .mu.m to 0.2 .mu.m. The ferromagnetic amorphous alloy multi-layer films constitute at least parts of the head core.
摘要翻译： 磁头包括铁磁非晶合金多层膜，每层由铁磁性非晶合金层和磁性间隔层的交替叠层构成。 每个铁磁非晶合金层的厚度为1μm至10μm。 每个磁性间隔层的厚度为0.01μm至0.2μm。 铁磁非晶合金多层膜构成头芯的至少一部分。
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23.发明授权
公开(公告)号：US5463518A
公开(公告)日：1995-10-31
申请号：US673866
申请日：1991-03-22
申请人： Shigekazu Otomo , Noriyuki Kumasaka , Kazuo Shiiki , Takeo Yamashita , Noritoshi Saito , Yoshinobu Tarutani
发明人： Shigekazu Otomo , Noriyuki Kumasaka , Kazuo Shiiki , Takeo Yamashita , Noritoshi Saito , Yoshinobu Tarutani
IPC分类号： G01R33/035 , G11B5/00 , G11B5/127 , G11B5/31 , G11B5/33 , G11B5/40 , G11B5/53 , G11B33/14 , G11B5/147 , G01C21/08 , G01R33/02
CPC分类号： G11B5/1278 , G01R33/0358 , G11B5/00 , G11B5/31 , G11B5/313 , G11B5/3143 , G11B5/332 , G11B5/40 , G11B5/53 , G11B33/14 , Y10S505/843
摘要： A magnetic head has a superconducting quantum interference device having a ring made of a superconductive material including a Josephson junction which links to a magnetic flux generated by a magnetic recording medium, and a magnetic pole for guiding the magnetic flux generated by the magnetic recording medium or the ring made of a superconductive material arranged in parallel to a plane of the magnetic recording medium so that the magnetic flux generated by the magnetic recording medium flows into a through-hole of the ring. A magnetic recording and reproducing apparatus includes such a magnetic head, a winding to which a reproduced signal from the magnetic head is applied and the superconductive ring including the Josephson junction arranged such that the magnetic flux generated by the winding flows thereto.
摘要翻译： 磁头具有超导量子干涉装置，其具有由超导材料制成的环，该超导材料包括与由磁记录介质产生的磁通相关联的约瑟夫逊结，以及用于引导由磁记录介质产生的磁通的磁极或 由与磁记录介质的平面平行布置的超导材料制成的环，使得由磁记录介质产生的磁通流入环的通孔。 磁记录和再现装置包括这样的磁头，施加来自磁头的再现信号的绕组和包括约瑟夫逊结的超导环，其布置成使得由绕组产生的磁通量流向其。
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公开(公告)号：US4935311A
公开(公告)日：1990-06-19
申请号：US181051
申请日：1988-04-13
CPC分类号： B82Y25/00 , G11B5/1278 , G11B5/147 , G11B5/31 , H01F10/324 , H01F10/3254 , Y10S428/928 , Y10T428/1129 , Y10T428/12465 , Y10T428/12632 , Y10T428/12812 , Y10T428/12951
摘要： Disclosed is a magnetic multilayered film in which layers of Fe or of an alloy containing Fe as an essential constituent are laminated together with intermediate layers of a nonmagnetic metal. In an embodiment of the magnetic multilayered film, each of the Fe layers or each of the Fe alloy layers is epitaxially grown on at least part of each of the intermediate layers of the nonmagnetic metal. A magnetic head having the magnetic multilayered film is also disclosed. The nonmagnetic metal is at least one of those selected from the group consisting of V, Cr, Cu, Nb, W, Al and Pt.
摘要翻译： 公开了一种磁性多层膜，其中Fe或含有Fe作为必要成分的合金层与非磁性金属的中间层层压在一起。 在磁性多层膜的一个实施方案中，每个Fe层或每个Fe合金层在非磁性金属的每个中间层的至少一部分上外延生长。 还公开了一种具有磁性多层膜的磁头。 非磁性金属是选自V，Cr，Cu，Nb，W，Al和Pt中的至少一种。
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25.发明授权Magnetic head having short distance between gaps for recording reproducing and erasing 失效用于记录再现和擦除的间隙之间具有短距离的磁头
公开(公告)号：US4847715A
公开(公告)日：1989-07-11
申请号：US941648
申请日：1986-12-15
IPC分类号： G11B5/265
CPC分类号： G11B5/2655
摘要： A tunnel erasing-type magnetic head having a short distance between the gaps, wherein a second core half is sandwiched between the first core half and the third core half, a magnetic gap for recording and reproducing the signals is formed between the first core half and the second core half, and a magnetic gap for erasing is formed between the second core half and the third core half, so that the second core half can be utilized for both recording and reproducing the signals and erasing the signals. The second core half is obtained by forming a thin magnetic film of a high saturation flux density on the base portion composed of a nonmagnetic material that forms the magnetic gap. The first and third core halves are also obtained by forming a thin magnetic film of a high saturation flux density on the magnetic gap surfaces of the base portions to produce performance that can be used for the magnetic recording media having high coercive force. The magnetic head has a short distance between the gaps. When used for a floppy disk apparatus, therefore, there does not develop under-erasing or over-erasing even for small disks, and the effective track width does not decrease, either. This head can be used also as the one in which an ordinary erasing head element and a recording and reproducing head element are combined together.
摘要翻译： 一种在间隙之间具有短距离的隧道擦除型磁头，其中第二芯体半部夹在第一芯部半部和第三芯部半部之间，用于记录和再生信号的磁隙形成在第一芯部半部和 第二磁芯半部和用于擦除的磁隙形成在第二磁芯半部和第三磁芯半部之间，使得第二磁芯半部可以用于记录和再现信号并擦除信号。 通过在由形成磁隙的非磁性材料构成的基部上形成具有高饱和磁通密度的薄磁膜来获得第二芯体半部。 通过在基部的磁隙表面上形成具有高饱和磁通密度的薄磁膜也可获得第一和第三半芯，以产生可用于具有高矫顽磁力的磁记录介质的性能。 磁头在间隙之间具有短距离。 因此，当用于软盘设备时，即使对于小盘也不会发生欠擦除或过度擦除，并且有效轨道宽度也不会降低。 该头也可以用作将普通擦除头元件和记录和再现头元件组合在一起的头。
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26.发明授权Multilayered magnetic films and thin-film magnetic heads using the same as a pole 失效使用与极相同的多层磁性膜和薄膜磁头
公开(公告)号：US4814921A
公开(公告)日：1989-03-21
申请号：US150504
申请日：1988-02-01
申请人： Yoshihiro Hamakawa , Kazuo Shiiki , Yoshihiro Shiroishi , Isamu Yuitoo , Hitoshi Numasaka , Noriyuki Kumasaka , Shigekazu Otomo , Eijin Moriwaki
发明人： Yoshihiro Hamakawa , Kazuo Shiiki , Yoshihiro Shiroishi , Isamu Yuitoo , Hitoshi Numasaka , Noriyuki Kumasaka , Shigekazu Otomo , Eijin Moriwaki
CPC分类号： G11B5/31
摘要： Multilayered magnetic films of the invention comprising at least two unit magnetic films each of which has a thickness of from 0.05 to 0.9 .mu.m and includes a plurality of ferromagnetic layers each having a thickness of from 0.01 to 0.2 .mu.m and a 1 nm to 10 nm thick first intermediate layer consisting of a ferromagnetic, nonmagnetic or antiferromagnetic material and provided between adjacent ferromagnetic layers, and a second intermediate layer having a thickness of from 10 to 40 nm, consisting of a nonmagnetic or antiferromagnetic material and provided between the at least two unit magnetic films. The multilayered magnetic film is suitable as a pole of a thin-film magnetic head. An underlayer may be further provided between the magnetic film and a substrate whereby a multilayered magnetic film having good characteristics can be obtained.
摘要翻译： 本发明的多层磁性膜包括至少两个单元磁性膜，每个单元磁性膜的厚度为0.05至0.9μm，并且包括多个铁磁层，每个铁磁层的厚度为0.01至0.2μm，1nm至10nm nm厚的第一中间层，由铁磁性，非磁性或反铁磁性材料构成，并且设置在相邻的铁磁层之间，以及厚度为10至40nm的第二中间层，由非磁性或反铁磁材料组成，并且设置在所述至少两个 单位磁膜。 多层磁性膜适合作为薄膜磁头的磁极。 可以在磁性膜和基板之间进一步设置底层，由此可以获得具有良好特性的多层磁性膜。
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公开(公告)号：US4766039A
公开(公告)日：1988-08-23
申请号：US875222
申请日：1986-06-17
申请人： Shigekazu Otomo , Noriyuki Kumasaka , Noritoshi Saito , Takeo Yamashita , Kazuo Shiiki , Yoshihiro Hamakawa
发明人： Shigekazu Otomo , Noriyuki Kumasaka , Noritoshi Saito , Takeo Yamashita , Kazuo Shiiki , Yoshihiro Hamakawa
CPC分类号： G11B5/11 , G11B5/1278 , G11B5/147 , G11B5/31 , G11B5/39 , Y10S428/90
摘要： A magnetic head comprising a magnetic film in at least a part of a magnetic circuit, at least a part of the magnetic film being formed in contact with, or being exposed to, an oxide or oxygen at least in a heating step at 150.degree. C. or higher in a process for preparing the magnetic head is disclosed. An amorphous alloy film for the magnetic film has the following composition formula to give distinguished head characteristics without any oxidation:Co.sub.a T.sub.b Zr.sub.c N.sub.dwhere T is at last one of Nb, Ta, W, Mo, V and Cr; N is at least one of Au, Pt and Ag; d.gtoreq.1, b>0, b.sub.1 +b.sub.2 +2c.gtoreq.10, a+d.gtoreq.80, -1.ltoreq.(3c-b.sub.1 -3b.sub.2 -5b.sub.3 -3b.sub.4 -4d)/(c+b.sub.1 +b.sub.2 +b.sub.3 +b.sub.4 +d).ltoreq.1, and a+b+c+d=100, where b.sub.1 is a Nb concentration, b.sub.2 is a Ta concentration, b.sub.3 is a W concentration, b.sub.4 is sum total of Mo, Cr and V concentrations and b=b.sub.1 +b.sub.2 +b.sub.3 +b.sub.4.
摘要翻译： 磁头包括至少一部分磁路中的磁性膜，至少一部分磁性薄膜至少在150℃的加热步骤中与氧化物或氧气接触或暴露于氧化物或氧气中 公开了一种用于制备磁头的方法。 用于磁性膜的非晶态合金膜具有以下组成式，可以得到无特殊的头部特性：没有任何氧化：CoaTbZrcNd，其中T是Nb，Ta，W，Mo，V和Cr中的最后一个; N是Au，Pt和Ag中的至少一种; d> / = 1，b> 0，b1 + b2 + 2c> / = 10，a + d> / = 80，-1（3c-b1-3b2-5b3-3b4-4d）/（c + b1 + b2 + b3 + b4 + d）
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28.发明授权
公开(公告)号：US5159505A
公开(公告)日：1992-10-27
申请号：US531335
申请日：1990-05-31
申请人： Yasuaki Horiuchi , Kuninori Imai , Takeshi Tajima , Takeo Yamashita , Shigekazu Otomo , Noriyuki Kumasaka
发明人： Yasuaki Horiuchi , Kuninori Imai , Takeshi Tajima , Takeo Yamashita , Shigekazu Otomo , Noriyuki Kumasaka
摘要： A rotating drum for use in a magnetic recording system. A magnetic head is mounted on the rotating drum, and a magnetic recording medium is wound on the rotating drum, and the rotating drum is rotated so as to read and write signals. Alternatively, the magnetic recording medium is mounted on the rotating drum, and signals are read and written by a magnetic head fixed exteriorly of the rotating drum. The rotating drum has at least one opening or notch in a magnetic recording medium-winding surface thereof. In order to restrain the deformation of the rotating drum during the rotation thereof, the center of gravity of the drum is disposed substantially in registry with the axis of rotation of the drum.
摘要翻译： 用于磁记录系统的旋转鼓。 磁头安装在转鼓上，磁记录介质缠绕在旋转的滚筒上，旋转的滚筒旋转以便读写信号。 或者，磁记录介质安装在旋转滚筒上，并且通过固定在旋转滚筒外部的磁头来读取和写入信号。 旋转鼓在其磁记录介质卷绕表面中具有至少一个开口或凹口。 为了抑制旋转鼓在其旋转期间的变形，滚筒的重心基本上与滚筒的旋转轴线重合。
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29.发明授权Thin film magnetic head including magnetic layers having high saturation magnetic flux density and metal film for avoiding deterioration during manufacturing 失效薄膜磁头包括具有高饱和磁通密度的磁性层和用于避免制造过程中的劣化的金属膜
公开(公告)号：US4943879A
公开(公告)日：1990-07-24
申请号：US085719
申请日：1987-08-17
IPC分类号： G11B5/31
CPC分类号： G11B5/3163 , G11B5/3133
摘要： A thin film magnetic head having a first magnetic layer of a saturation magnetic flux density greater than that of a Ni-Fe alloy and a second magnetic layer of a saturation magnetic flux density grater than that of a Ni-Fe alloy supported by a base layer, the magnetic layers for forming a magnetic core of the head with a non-magnetic material gap layer interposed therebetween, and an electrically insulating layer provided between the magnetic layers so that turns of coil wound about the magnetic core are partly formed in electrically insulated relation within the insulating layer, in which a metal film is provided between the first magnetic layer and the electrically insulating layer so that the electrically insulating layer does not contact with the first magnetic layer and/or another metal film is formed on the second magnetic layer so that the other metal layer is sandwiched between the non-magnetic layer and the second magnetic layer.
摘要翻译： 一种薄膜磁头，其具有大于Ni-Fe合金的饱和磁通密度的第一磁性层和比由基底层支撑的Ni-Fe合金的饱和磁通密度分布的第二磁性层 用于形成具有介于其间的非磁性材料间隙层的头部的磁芯的磁性层和设置在磁性层之间的电绝缘层，使得缠绕在磁芯上的线圈的匝部分地形成为电绝缘关系 在绝缘层内，在第一磁性层和电绝缘层之间设有金属膜，使得电绝缘层不与第一磁性层接触和/或在第二磁性层上形成另一金属膜，因此 另一个金属层夹在非磁性层和第二磁性层之间。
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公开(公告)号：US4920013A
公开(公告)日：1990-04-24
申请号：US100231
申请日：1987-09-23
CPC分类号： B82Y25/00 , G11B5/1278 , G11B5/147 , G11B5/31 , H01F10/30 , H01F10/324 , H01F10/3254 , Y10S428/90
摘要： A magnetic multilayer structure having an increased permeability and an increased saturation magnetic flux density comprises a plurality of magnetic layers and a plurality of intermediate layers alternately laminated one upon another. Each of the magnetic layers is made of Fe, Co, Ni or an alloy containing one of Fe, Co and Ni, while each of the intermediate layers is made of a material capable of interstitially forming a solid solution with the material of the magnetic layers.
摘要翻译： 具有增加的磁导率和增加的饱和磁通密度的磁性多层结构包括多个磁性层和彼此交替层叠的多个中间层。 每个磁性层由Fe，Co，Ni或含有Fe，Co和Ni之一的合金制成，而每个中间层由能够与磁性层的材料间路形成固溶体的材料制成 。
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