公开(公告)号：US4411716A

公开(公告)日：1983-10-25

申请号：US282805

申请日：1981-07-13

申请人： Kazuo Shiiki ,  Shigekazu Otomo ,  Mitsuhiro Kudo ,  Takeshi Kimura ,  Noriyuki Kumasaka ,  Hideo Fujiwara

发明人： Kazuo Shiiki ,  Shigekazu Otomo ,  Mitsuhiro Kudo ,  Takeshi Kimura ,  Noriyuki Kumasaka ,  Hideo Fujiwara

IPC分类号： H01F1/153 ,  C22C45/00 ,  C22C45/02 ,  C22C45/04 ,  G11B5/127 ,  G11B5/147 ,  G11B5/21 ,  C22C33/00

CPC分类号： C22C45/008 ,  G11B5/127 ,  G11B5/21

摘要： Amorphous alloys for magnetic head cores of a composition which is expressed by a general formula (Co.sub.x Fe.sub.1-x).sub.a Cr.sub.b Si.sub.c B.sub.1-a-b-c wherein the value of x is in the range between 0.925 and 0.97, the value of a is in the range between 0.74 and 0.76, the value of b is in the range between 0.005 and 0.03 and the value of c is in the range between 0.06 and 0.18, and wherein a+b+c.ltoreq.0.94, and a magnetic head for video equipment wherein at least one foil of one of the aforesaid alloys having a width of below 30 .mu.m is used. The amorphous alloys of the aforesaid composition are high in permeability, high in saturation magnetic flux density and low in magnetostriction. A magnetic head for video equipment using such alloys has excellent characteristics in that it has high recording and reproducing characteristics and a high output/noise ratio and shows little magnetic after effect.

摘要翻译： 用于由通式（CoxFe1-x）aCrbSicB1-abc表示的组合物的磁头芯的非晶合金，其中x的值在0.925和0.97之间，a的值在0.74和0.76之间的范围内 ，b的值在0.005和0.03之间并且c的值在0.06和0.18之间的范围内，并且其中a + b + c <0.94，以及用于视频设备的磁头，其中至少一个 使用宽度为30μm以下的上述合金之一的箔。 上述组成的非晶态合金的磁导率高，饱和磁通密度高，磁致伸缩性低。 使用这种合金的视频设备的磁头具有优异的特性，因为它具有高的记录和再现特性以及高的输出/噪声比，并且显示出很小的磁效应。

公开(公告)号：US4748089A

公开(公告)日：1988-05-31

申请号：US681261

申请日：1984-12-13

申请人： Noriyuki Kumasaka ,  Kazuo Shiiki ,  Shigekazu Otomo ,  Yoshihiro Shiroishi ,  Takeo Yamashita ,  Noritoshi Saito ,  Kiminari Shinagawa ,  Mitsuhiro Kudo

发明人： Noriyuki Kumasaka ,  Kazuo Shiiki ,  Shigekazu Otomo ,  Yoshihiro Shiroishi ,  Takeo Yamashita ,  Noritoshi Saito ,  Kiminari Shinagawa ,  Mitsuhiro Kudo

IPC分类号： H01F10/00 ,  G11B5/127 ,  G11B5/147 ,  G11B5/21 ,  G11B5/31 ,  H01F10/12 ,  H01F10/13 ,  H01F10/32 ,  H01F10/08

CPC分类号： B82Y25/00 ,  G11B5/1278 ,  G11B5/147 ,  G11B5/21 ,  G11B5/31 ,  H01F10/13 ,  H01F10/3204 ,  Y10S428/926 ,  Y10S428/928 ,  Y10T428/115 ,  Y10T428/12632 ,  Y10T428/12861 ,  Y10T428/12937 ,  Y10T428/12944 ,  Y10T428/12951

摘要： A multilayered ferromagnetic amorphous alloy film is constituted by a plurality of main ferromagnetic material alloy films of a ferromagnetic amorphous alloy laminated one upon another with a spacer ferromagnetic material layer interposed therebetween, the spacer ferromagnetic material layer being of a ferromagnetic material different from the ferromagnetic alloy. Also disclosed is a magnetic head employing the above-described multilayered film for, at least, a portion of a core thereof. The multilayered film has excellent magnetic characteristics and is easily patterned.

摘要翻译： 多层铁磁性非晶态合金膜由多个铁磁性非晶合金的主要铁磁材料合金膜构成，层叠铁磁材料层彼此层叠，间隔铁磁材料层为与铁磁性合金不同的铁磁材料 。 还公开了使用上述多层膜至少部分其芯的磁头。 多层膜具有优异的磁特性并且容易图案化。

公开(公告)号：US4943879A

公开(公告)日：1990-07-24

申请号：US085719

申请日：1987-08-17

申请人： Hisashi Takano ,  Yoshihiro Hamakawa ,  Kazuo Shiiki ,  Shigekazu Otomo ,  Noriyuki Kumasaka

发明人： Hisashi Takano ,  Yoshihiro Hamakawa ,  Kazuo Shiiki ,  Shigekazu Otomo ,  Noriyuki Kumasaka

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。

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。

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

IPC分类号： G11B5/31 ,  G11B5/127

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。

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

IPC分类号： G11B5/11 ,  G11B5/127 ,  G11B5/147 ,  G11B5/31 ,  G11B5/39 ,  H01F10/12 ,  H01F10/13 ,  H01F10/16

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）

公开(公告)号：US4306908A

公开(公告)日：1981-12-22

申请号：US188746

申请日：1980-09-19

申请人： Shinji Takayama ,  Yasuo Tsukuda ,  Kazuo Shiiki ,  Shigekazu Otomo ,  Mitsuhiro Kudo ,  Yasunobu Ogata ,  Yoshizo Sawada

发明人： Shinji Takayama ,  Yasuo Tsukuda ,  Kazuo Shiiki ,  Shigekazu Otomo ,  Mitsuhiro Kudo ,  Yasunobu Ogata ,  Yoshizo Sawada

IPC分类号： C22C19/07 ,  C22C45/00 ,  C22C45/02 ,  C22C45/04 ,  G11B5/127 ,  H01F1/153 ,  C22C19/00

CPC分类号： C22C45/008 ,  H01F1/15316

摘要： A ferromagnetic amorphous alloy having a composition represented by (Co.sub.x Ni.sub.y Fe.sub.z).sub.a M.sub.b G.sub.c, wherein M is Cr, Mo and/or W, G is Zr, Hf and/or Ti and x, y, z and a, b, c are selected to meet the conditions of x=1-y-z, 0.ltoreq.y.ltoreq.0.2, 0.ltoreq.z.ltoreq.0.7, a=1-b-c, 0.ltoreq.b.ltoreq.0.05 and 0.05.ltoreq.c.ltoreq.0.2 This amorphous alloy has a superior magnetic characteristic and a high thermal stability.

摘要翻译： 具有由（CoxNiyFez）aMbGc表示的组成的铁磁性非晶合金，其中M是Cr，Mo和/或W，G是Zr，Hf和/或Ti，x，y，z和a，b，c被选择以满足 x = 1-yz，0≤y≤0.2,0≤z≤0.7，a = 1-bc，0