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1. 发明授权

US4411757A Formation of electrodes for magnetoresistive sensor 失效
标题翻译：磁阻传感器电极的形成
公开(公告)号：US4411757A
公开(公告)日：1983-10-25
申请号：US386302
申请日：1982-06-08
申请人： Masahiro Kitada , Masahide Suenaga , Yukihisa Tsukada , Noboru Shimizu , Hiroshi Yamamoto
发明人： Masahiro Kitada , Masahide Suenaga , Yukihisa Tsukada , Noboru Shimizu , Hiroshi Yamamoto
IPC分类号： H01F41/14 , H01L21/28 , H01L43/02 , H01L43/12 , C23C15/00
CPC分类号： H01L43/02 , H01L43/12
摘要： Electrodes for a magnetoresistive sensor can be formed easily by a method wherein a double-layer structure of Mo and Al on a film of a magnetoresistive material such as permalloy is formed to have a predetermined pattern, firstly by exposing an Al layer to a chemical etching solution or subjecting the Al layer to the ion-milling treatment to give said Al layer said pattern and then subjecting a Mo layer to the plasma etching or reactive sputter etching treatment to give said Mo layer said pattern.
摘要翻译：可以通过以下方法容易地形成用于磁阻传感器的电极：首先通过将Al层暴露于化学蚀刻来形成具有预定图案的诸如坡莫合金的磁阻材料的膜上的Mo和Al的双层结构溶液或使Al层进行离子碾磨处理，得到所述Al层的所述图案，然后对Mo层进行等离子蚀刻或反应溅射蚀刻处理，得到所述Mo层所述图案。

2. 发明授权

US4462881A Method of forming a multilayer thin film 失效
标题翻译：形成多层薄膜的方法
公开(公告)号：US4462881A
公开(公告)日：1984-07-31
申请号：US322697
申请日：1981-11-18
申请人： Hiroshi Yamamoto , Noboru Shimizu , Masahide Suenaga , Yukihisa Tsukada , Tooru Takeura
发明人： Hiroshi Yamamoto , Noboru Shimizu , Masahide Suenaga , Yukihisa Tsukada , Tooru Takeura
IPC分类号： G11B5/31 , G11B5/39 , H01F41/34 , C23C15/00
CPC分类号： G11B5/3903 , H01F41/34
摘要： A method of forming a multilayer thin film is disclosed in which a second thin conductive film is deposited on a first thin conductive film uninterruptedly after the first thin film has been deposited on a substrate, the first and second films thus formed are processed so as to form a predetermined pattern, the surface of the second thin film is cleaned by ion etching and a third thin conductive film is deposited on the whole surface of the substrate, and then the second and third thin films are processed so as to have a pattern different from the above-mentioned predetermined pattern. In the case where two thin conductive films different in material and pattern from each other are piled on a substrate, the above method can form a perfect interconnection between the two films and can make very small the contact resistance between the two films. Accordingly, the method is fit to form, for example, a barber pole type magnetoresistive element.
摘要翻译：公开了一种形成多层薄膜的方法，其中在第一薄膜沉积在基底上之后，第二薄导电膜不间断地沉积在第一薄导电膜上，这样形成的第一和第二薄膜被加工成形成预定图案，通过离子蚀刻来清洁第二薄膜的表面，并且在基板的整个表面上沉积第三薄导电膜，然后处理第二和第三薄膜以具有不同的图案从上述预定图案。在材料和图案彼此不同的两个薄导电膜堆叠在基板上的情况下，上述方法可以形成两个膜之间的完美互连，并且可以使两个膜之间的接触电阻非常小。因此，该方法适合于形成例如理发杆型磁阻元件。

3. 发明授权

US4596646A Thin-film permanent magnet and method of producing the same 失效
标题翻译：薄膜永久磁铁及其制造方法
公开(公告)号：US4596646A
公开(公告)日：1986-06-24
申请号：US469105
申请日：1983-02-23
申请人： Masahiro Kitada , Hiroshi Yamamoto , Masahide Suenaga , Noboru Shimizu
发明人： Masahiro Kitada , Hiroshi Yamamoto , Masahide Suenaga , Noboru Shimizu
IPC分类号： C22C1/00 , C22C19/07 , C23C14/14 , C23C14/34 , C23C14/36 , G11B5/66 , H01F10/16 , H01F41/18 , C23C14/00
CPC分类号： H01F41/18 , C22C19/07 , G11B5/66 , H01F10/16 , Y10T428/115
摘要： A thin-film permanent magnet which is made of a Co - Pt alloy containing 5-35 atomic-% of Pt. This thin-film permanent magnet can be readily produced by a sputtering method in which the ultimate pressure before the introduction of a sputtering gas is made 5.times.10.sup.-7 -1.times.10.sup.-4 Torr. Without any heat treatment, it has a coercivity of 2,000 Oe at the maximum and a remanence of about 8,000-about 18,000 G.
摘要翻译：由含有5-35原子％Pt的Co-Pt合金制成的薄膜永久磁铁。该薄膜永磁体可以容易地通过溅射法制造，其中溅射气体引入之前的极限压力为5×10 -7〜1×10 -4乇。没有任何热处理，它的矫顽力最大为2,000 Oe，剩余约8,000 - 约18,000 G.

4. 发明授权

US4443294A Process for forming magnetic film pattern 失效
标题翻译：磁膜图案形成工艺
公开(公告)号：US4443294A
公开(公告)日：1984-04-17
申请号：US386578
申请日：1982-06-09
申请人： Masahide Suenaga , Yukihisa Tsukada , Hiroshi Yamamoto
发明人： Masahide Suenaga , Yukihisa Tsukada , Hiroshi Yamamoto
IPC分类号： C23F1/00 , C23F1/28 , G11B5/31 , G11B5/39 , H01F41/14 , H01F41/34 , C23F17/00 , H05K3/06
CPC分类号： G11B5/3903 , C23F1/28 , G11B5/3163 , H01F41/34 , G11B5/3116 , Y10T29/49044 , Y10T29/49046
摘要： In forming a magnetic film pattern of permalloy by photoetching, the permalloy magnetic film formed on a substrate is etched in an etching solution containing ferric chloride, hydrochloric acid and phosphoric acid, thereby gradually reducing the thickness of the film pattern at the side edges in a tapered state. The permalloy magnetic film can be easily taper-etched without any deterioration of magnetic properties of permalloy magnetic film and substrate surface, but with a greatly improved yield of magnetic film head production and a greatly improved reliability.
摘要翻译：在通过光刻法形成坡莫合金的磁性膜图案中，在含有氯化铁，盐酸和磷酸的蚀刻溶液中蚀刻形成在基板上的坡莫合金磁膜，从而逐渐减小侧视图中的膜图案的厚度锥形状态。坡莫合金磁膜可以容易地锥形蚀刻，而不会使坡莫合金磁性膜和基板表面的磁性能下降，但磁性膜头的生产成本大大提高，可靠性大大提高。

5. 发明授权

US4301353A Method for producing magnetic head 失效
标题翻译：磁头制造方法
公开(公告)号：US4301353A
公开(公告)日：1981-11-17
申请号：US125702
申请日：1980-02-28
申请人： Masahide Suenaga , Noboru Shimizu , Mitsuhiro Kudo , Hiroshi Yamaguchi , Masao Mitani
发明人： Masahide Suenaga , Noboru Shimizu , Mitsuhiro Kudo , Hiroshi Yamaguchi , Masao Mitani
IPC分类号： G11B5/127 , B23K26/00 , B23K26/02 , B23K26/06 , G11B5/133 , G11B5/187 , B23K27/00
CPC分类号： B23K26/02 , B23K26/066 , B23K26/362 , Y10T29/49041
摘要： A method for producing a magnetic head, comprising the step of irradiating peripheral parts other than a track portion and/or a slider portion with a laser beam so as to selectively remove surface parts of the irradiated parts, thereby to form the track portion and/or the slider portion. According to this method, the track portion and/or the slider portion of the magnetic head can be worked at high working rate, at high precision and with low working deformation, with the result that the magnetic head of excellent reproduced output and crosstalk characteristics can be readily manufactured.
摘要翻译：一种磁头的制造方法，其特征在于，包括以下步骤：用激光束照射轨道部分和/或滑块部分以外的周边部分，以选择性地去除被照射部分的表面部分，从而形成轨道部分和/ 或滑块部分。根据该方法，磁头的轨道部分和/或滑块部分可以以高工作速度，高精度和低加工变形加工，结果是具有优异的再现输出和串扰特性的磁头可以容易制造。

6. 发明授权

US4503394A Magnetoresistive sensor having a closed domain structure and electrode biasing 失效
标题翻译：具有封闭结构结构和电极偏置的磁阻传感器
公开(公告)号：US4503394A
公开(公告)日：1985-03-05
申请号：US390882
申请日：1982-06-22
申请人： Kanji Kawakami , Shinji Narishige , Masahide Suenaga
发明人： Kanji Kawakami , Shinji Narishige , Masahide Suenaga
IPC分类号： G01R33/09 , G11B5/39 , H01L43/00 , H01L43/08 , G01R33/06 , G11B5/12
CPC分类号： G11B5/3935 , G01R33/09 , G11B5/3964 , G11B5/3987 , G11B5/399 , H01L43/00 , H01L43/08
摘要： A magnetoelectric conversion element comprises a magnetoresistive effect material having a closed domain structure, a pair of contacts for supply of current flowing through the magnetoresistive effect material, and a bias electrode disposed between the contacts for biasing the direction of the current flow. The bias electrode is disposed so that the respective angles of intersection between the directions of current flow through different magnetic domains of the magnetoresistive effect material biased by the bias electrode and the directions of spontaneous magnetization biased by an external magnetic field are both increased or decreased.
摘要翻译：磁电转换元件包括具有封闭畴结构的磁阻效应材料，用于供应流过磁阻效应材料的电流的一对触点，以及设置在触点之间以偏置电流方向的偏置电极。偏置电极被设置为使得通过由偏置电极偏置的磁阻效应材料的不同磁畴的电流方向和由外部磁场偏置的自发磁化方向之间的相互交叉的角度的相互交叉的角度都增加或减少。

7. 发明授权

US4556925A Magnetoresistive head 失效
标题翻译：磁阻头
公开(公告)号：US4556925A
公开(公告)日：1985-12-03
申请号：US402419
申请日：1982-07-28
申请人： Masahide Suenaga , Kousaku Chida , Masaki Ohura
发明人： Masahide Suenaga , Kousaku Chida , Masaki Ohura
IPC分类号： G11B5/39 , H01L43/08 , G11B5/30
CPC分类号： G11B5/398 , G11B5/399 , H01L43/08
摘要： A magnetoresistive head comprising a magnetoresistive element, to which a magnetic bias field is applied, is disposed opposite to a magnetic recording medium moving relative thereto, and the resistance value of the magnetoresistive element varying as a result of the relative movement of the magnetoresistive element and the magnetic recording medium is detected to reproduce information recorded on the magnetic recording medium. The magnetoresistive element of the magnetic head has an elongate shape extending along the easy axis of magnetization and has protrusions at its longitudinal ends. The protrusions have, for example, a semicircular or triangular contour. These protrusions are effective for suppressing formation of undesirable domain walls in the magnetoresistive element, so that the magnetic head can operate without substantial variation of its output voltage level and with reduced Barkhousen noise.
摘要翻译：包括施加了磁偏置场的磁阻元件的磁阻磁头与相对于其移动的磁记录介质相对设置，并且磁阻元件的电阻值由于磁阻元件的相对移动而变化，检测磁记录介质以再现记录在磁记录介质上的信息。磁头的磁阻元件具有沿容易的磁化轴延伸的细长形状，并在其纵向端部具有突起。突起具有例如半圆形或三角形轮廓。这些突起对于抑制磁阻元件中不期望的畴壁的形成是有效的，使得磁头可以在其输出电压电平的实质变化和具有降低的Barkhousen噪声的情况下工作。

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