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公开(公告)号：JPS5423020A
公开(公告)日：1979-02-21
申请号：JP8778977
申请日：1977-07-21
Applicant: SONY CORP
Inventor： MAKINO YOSHIMI , TAMURA HIDEMASA , ASO KOUICHI , KAMIHIRA AKIRA , ITOU MORIYASU
Abstract: PURPOSE:To provide an amorphous magnetic iron alloy contg. Cr, Si and B in a specified ratio and having a low magnetostriction constant, superior magnetic characteristics to external stress, and a high magnetic flux density, which is useful as a high density recording head materal.
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公开(公告)号：JPS60263414A
公开(公告)日：1985-12-26
申请号：JP12025184
申请日：1984-06-12
Applicant: SONY CORP
Inventor： HAYAKAWA MASATOSHI , HAYASHI KAZUHIKO , OCHIAI YOSHITAKA , MATSUDA HIDEKI , ISHIKAWA OSAMU , ASO KOUICHI
Abstract: PURPOSE:To obtain a soft magnetic thin film having high permeability in a high- frequency band by growing a magnetic thin film while energizing a film surface, which is forming, toward a predetermined direction in forming a soft magnetic thin film with a vapor phase thin film growing method. CONSTITUTION:An effect equivalnt to sputtering or evaporating in a magnetic field can be obtained when a film is formed while energizing in forming a thin film with sputtering or evaporating. As a magnetic field applied always meets at right angles to a direction of a current, even a magnetic path having a complicated form can be vested with uniaxial anisotropy meeting at right angles to the magnetic path without fail by forming the film while energizing a part corresponding to the magnetic path. For instance, in case of forming a film by flowing an electric grain (i) between both ends of a ring magnetic path 1, a direction ''b'' of an axis of easy magnetization meets at right angles to a direction (a) of the magnetic path 1 at each part of the magnetic path 1.
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公开(公告)号：JPS60119648A
公开(公告)日：1985-06-27
申请号：JP22815683
申请日：1983-12-02
Applicant: SONY CORP
Inventor： ASO KOUICHI , OCHIAI YOSHITAKA , SUGIURA GIICHI
IPC: G11B11/10 , G11B11/105 , G11C13/06
Abstract: PURPOSE:To improve the S/N by forming a soft magnetic thin film through coating transparent to a reproduced light onto a magnetic recording layer. CONSTITUTION:A magnetic recording layer, i.e., a vertical magnetizing film 12 is formed on a base 11 and the soft magnetic thin film 13 transparent to the reproduced light is formed onto the film 12 by the vapor deposition or sputtering through film coating. A planer magnetization 15 having a pattern corresponding to the magnetizing distribution 14 of the film 12 is produced to the film 13 and a component 17 magnetized vertically from the relation of flow of magnetic flux exists at a part surrounded by a circle shown in broken lines. In irradiating a laser light to the part 16 surrounded by a circle in broken lines at reproduction while being subject to linear polarization 5 by a polarizer, the light is transmitted twice so as to be reciprocated through the film 13 at incidence and reflection and the light is subject to rotation twice by the Farady effect. Moreover, a reflected light 5' is reflected on the surface of the film 12 and subject to the rotation due to the magnetic Kerr effect. Thus, the polarized plane rotating angle theta as a whole is the sum of them above thereby improving the S/N at reproduction.
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公开(公告)号：JPS6086223A
公开(公告)日：1985-05-15
申请号：JP19465983
申请日：1983-10-18
Applicant: SONY CORP
Inventor： HAYAKAWA MASATOSHI , ASO KOUICHI
Abstract: PURPOSE:To obtain crystalline thin strip excellent in magnetic characteristics and having high bending strength by liquid quenching method with which the mother alloy into which Cr, Ti, and Mo are added, to be of specified atomic ratio respectively, to a two-element alloy contg. specified ratio of Fe, and Si. CONSTITUTION:The mother alloy is prepared by adding Cr or Ti or Mo, as a third element Mz, so as to be : 89>=x>=80, 15>=y>=10, 5>=z>1, to a binary alloy represented by FexSiy. The mother alloy, e.g. represented by Fe88-xSi12Crx (x=0 to 4) in atomic ratio is refined in highfrequency melting furnace. The mother alloy, then, is remelted by twin-roll method, supercooled between rolls 2 and 3 to obtain crystalline thin strip 5. The thin strip 5 thus obtd. is excellent in workability with aforementioned characteristics, and is best suited to electro magnetic applications. Numerals 1 and 1a in the Fig. represent crucible and nozzle, respectively.
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公开(公告)号：JPS6083750A
公开(公告)日：1985-05-13
申请号：JP19015983
申请日：1983-10-12
Applicant: SONY CORP
Inventor： HAYAKAWA MASATOSHI , OCHIAI YOSHITAKA , HAYASHI KAZUHIKO , ASO KOUICHI
IPC: B22D11/06
Abstract: PURPOSE:To produce a metallic strip having good quality in large amt. by melting a base alloy in a crucible, discharging the melt through plural discharge ports provided at a suitable interval to the crucible onto the surface of cooling rolls and cooling quickly the melt. CONSTITUTION:Four melt discharge ports 6a, b, c, d formed between separators 7-11 are provided in the nozzle 1a of a crucible 1 having a coil 4 for heating and a base alloy is melted in said crucible 1. The melt is discharged from the ports 6a- and is quickly cooled on the surfaces of twin rolls 2, 3 by which four amorphous or crystalline metallic strips 5a, b, c, d are simultaneously obtd. The spacing between the ports 6a- is adequately set to prevent the strips 5a- from sticking to each other on the rolls 2, 3. The strips 5a- having good quality is thus produced in large amt.
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Patent Agency Ranking
公开(公告)号：JPS59140357A
公开(公告)日：1984-08-11
申请号：JP1417983
申请日：1983-01-31
Applicant: Sony Corp
Inventor： HAYASHI KAZUHIKO , ASO KOUICHI , KAMIHIRA AKIRA , OCHIAI YOSHITAKA , HAYAKAWA MASATOSHI , MATSUDA HIDEKI , ISHIKAWA OSAMU
Abstract: PURPOSE: To improve the magnetic permeability of an amorphous magnetic alloy in a high frequency region and to make an alloy suitable for use as the material of a magnetic core or the like by heat treating sheets of the alloy to eliminate the magnetic anisotropy and by coating the sheets with a resin or the like to produce magnetic anisotropy in the vertical direction.
CONSTITUTION: Sheets 3 of an amorphous magnetic alloy are heat treated in a rotating magnetic field or the like to eliminate the induction magnetic anisotropy. The sheets 3 are laminated while interposing a molding material 4 such as epoxy resin, and both sides of the laminate are coated with the material 4 to produce magnetic anisotropy in the vertical direction to the principal faces of the sheets 3. Both sides of a laminate of the sheets 3 alone may be coated with the material 4. By this method the magnetic permeability of the sheets 3 in a high frequency region of ≥0.1MHz can be improved when the sheets 3 are used as the material of the magnetic core of a magnetic head.
COPYRIGHT: (C)1984,JPO&JapioAbstract translation: 目的：为了提高高频区域的非晶磁性合金的导磁率，通过对合金的片材进行热处理以除去磁各向异性，并通过涂布来形成适合用作磁芯等的材料的合金 具有树脂等的片材以在垂直方向上产生磁各向异性。 构成：将非晶磁性合金的片材3在旋转磁场等中进行热处理以消除感应磁各向异性。 在插入诸如环氧树脂的模制材料4的同时层压片材3，并且层压体的两侧涂覆有材料4以在垂直于片材3的主面的垂直方向上产生磁各向异性。层叠体的两侧 单独的片材3可以被材料4涂覆。通过这种方法，当片材3用作磁芯的材料时，可以提高片材3在> = 0.1MHz的高频区域中的导磁率 磁头。
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公开(公告)号：JPS59136444A
公开(公告)日：1984-08-06
申请号：JP965783
申请日：1983-01-24
Applicant: Sony Corp
Inventor： HAYASHI KAZUHIKO , HAYAKAWA MASATOSHI , ISHIKAWA OSAMU , MATSUDA HIDEKI , OCHIAI YOSHITAKA , KAMIHIRA AKIRA , ASO KOUICHI , HOTAI KAZUHIDE , YAMAUCHI KAZUSHI
Abstract: PURPOSE: To develop an amorphous magnetic alloy excellent in magnetic characteristics, processability, corrosion resistance and anti-wear property, by a method wherein a Co-Fe-Ta-B alloy having a specific composition containing Co as a main component is melted while the molten alloy is cooled by a super- rapid cooling method to be made amorphous.
CONSTITUTION: An alloy having a composition represented by a general formula (FeCo)
x Ta
y B
z (wherein x+y+z=100 atom% and x=74W81 atom% y=1W 12 atom% and x+y=75W95 atom%) and contains Co as a main component is prepared by a melting method. This alloy is prepared by quenching and solidifying molten substance as an amorphous magnetic material by a quenching apparatus without using a metalloid element as an amorphousness forming material such as Si and used in preparing the core material of a magnetic head for magnetic recording and reproduction. This amorphous magnetic alloy does not show the deterioration of magnetic permeability and the lowering of mechanical properties even if heated for a long time at a high temp. and excellent in processability, corrosion resistance and anti-wear property.
COPYRIGHT: (C)1984,JPO&JapioAbstract translation: 目的：通过以Co为主成分的具有特定组成的Co-Fe-Ta-B合金熔融而开发磁特性，加工性，耐腐蚀性，耐磨损性优异的非晶磁性合金， 熔融合金通过超快速冷却方法冷却而制成无定形。 构成：具有由通式（FeCo）xTayBz（其中x + y + z = 100原子％，x = 74-81原子％y = 1- 12原子％，x + y = 75-95）表示的组成的合金 原子％）和含有Co作为主要成分的方法。 该合金是通过淬火装置淬火和固化熔融物质作为非晶磁性材料而制备的，而不使用准金属元素作为非晶形成材料如Si，并用于制备用于磁记录和再现的磁头的芯材。 该非晶磁性合金即使在高温下长时间加热，也不显示导磁率的劣化和机械性能的降低。 加工性，耐腐蚀性和耐磨性优异。
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公开(公告)号：JPS5914609A
公开(公告)日：1984-01-25
申请号：JP12348782
申请日：1982-07-15
Applicant: Sony Corp
Inventor： MATSUDA HIDEKI , ASO KOUICHI , KAMIHIRA AKIRA , OCHIAI YOSHITAKA , HAYAKAWA MASATOSHI , HOTAI KAZUHIDE , HAYASHI KAZUHIKO
CPC classification number: H01F1/15341
Abstract: PURPOSE:To improve permeability in a high frequency region by combining the thermal processings under the rotating magnetic field and vertical magnetic field and by selecting temperature to the specified relation. CONSTITUTION:An amorphous magnetic thin plate 1 is placed under the thermal processing in the rotating magnetic field and vertical magnetic field. In this case, the thermal processing under vertical magnetic field is carried out following the processing under the rotating magnetic field or this sequence may be inverted. In any case, a temperature Ta2 of the thermal processing to be executed first should satisfy the following relation. Namely, the temperature Ta1 is 300 deg.C or higher and is not higher than the Curie temperature Tc of amorphous magnetic material, while the temperature Ta2 is equal to Ta1 or lower and is 250 deg.C or higher but 350 deg.C or lower. Thereby, an inductive magnetic anisotropy can be controlled on the basis of three dimension and permeability in a frequency region as high as 10kHz or higher can be improved.
Abstract translation: 目的：通过组合旋转磁场下的热处理和垂直磁场，并通过选择温度达到指定关系，提高高频区的磁导率。 构成：将非晶磁性薄板1置于旋转磁场和垂直磁场的热处理之下。 在这种情况下，在旋转磁场下的处理之后进行垂直磁场下的热处理，或者该顺序可以反转。 在任何情况下，首先执行的热处理的温度Ta2应满足以下关系。 即，温度Ta1为300℃以上且不高于非晶磁性材料的居里温度Tc，而温度Ta2等于Ta1或更低，为250℃或更高，但为350℃或更高 降低。 因此，可以基于三维来控制感应磁各向异性，并且可以提高高达10kHz或更高的频率区域的磁导率。
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公开(公告)号：JPS596360A
公开(公告)日：1984-01-13
申请号：JP11586482
申请日：1982-07-02
Applicant: Sony Corp
Inventor： OCHIAI YOSHITAKA , HAYAKAWA MASATOSHI , ASO KOUICHI , KAMIHIRA AKIRA , MATSUDA HIDEKI , HOTAI KAZUHIDE , HAYASHI KAZUHIKO
Abstract: PURPOSE: To carry out the heat treatment of a large amount of or/and a continuous amorphous magnetic alloy, by a method wherein an amorphous magnetic alloy thin strip is applied with a magnetic field sufficient for being equalized in induction magnetic anisotropy in two directions crossing at right angles in the main surface of said thin strip at the Curie temp. thereof or less and the crystallization temp. thereof or less to be subjected to heat treatment.
CONSTITUTION: An amorphous magnetic alloy thin strip 1 is wound cylindrically and, for example, a solenoid coil 2 is provided to the cylindrical thin strip 1 to apply a magnetic field H
1 thereto in the longitudinal direction thereof at the Curie temp. of said alloy or less and the crystallization temp. thereof or less to carry out heat treatment. By this method, induction magnetic anisotropy K
//l is generated in the longitudinal direction within the main surface of the thin strip 1. In the next step, an external magnetic field H
3 is applied to the same cylindrical thin strip in the width direction thereof under the same temp. condition as mensioned above to carry out heat treatment. In this case, induction magnetic anisotopy K⊥
l is generated in the direction crossing the longitudinal direction at right angles within the main surface of the thin strip 1 to complete heat treatment in a time satisfying the condition of K
//l ≃K⊥
l . By this method, an amorphous magnetic alloy having high permeability capable of being used as a soft magnetic material can be prepared by a mass production system.
COPYRIGHT: (C)1984,JPO&JapioAbstract translation: 目的：为了进行大量的或/和连续的非晶磁性合金的热处理，通过这样一种方法，其中非晶磁性合金薄带被施加足够的磁场，以在两个方向上的交叉的两个方向上的感应磁各向异性相等 在居里温度下在所述薄带的主表面处以直角。 以下，结晶温度。 以下进行热处理。 构成：将非晶磁性合金薄带1卷绕成圆筒状，在圆筒形薄带1上设置螺线管线圈2，在其长边方向以居里温度施加磁场H1。 的所述合金或更低的结晶温度。 以下进行热处理。 通过该方法，在薄带1的主表面内沿长度方向产生感应磁各向异性K // l。在下一步骤中，外部磁场H3施加到宽度方向上的同一圆柱形薄带 在同一温度 上述情况进行热处理。 在这种情况下，感应磁异常Krt。 在薄带1的主表面内沿垂直于纵向方向的方向产生角度1，以在满足K // lapprox = Krt的条件的时间内完成热处理。 anglel。 通过该方法，可以通过大规模生产系统制备能够用作软磁性材料的具有高磁导率的无定形磁性合金。
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公开(公告)号：JPS60263304A
公开(公告)日：1985-12-26
申请号：JP12025084
申请日：1984-06-12
Applicant: SONY CORP
Inventor： HAYASHI KAZUHIKO , HAYAKAWA MASATOSHI , OCHIAI YOSHITAKA , MATSUDA HIDEKI , ISHIKAWA OSAMU , ASO KOUICHI
Abstract: PURPOSE:To improve the permeability of a magnetic head by providing an action gap formed to a conductive magnetic core with a nonmagnetic conductor and a means which flows a current to the magnetic core across the action gap. CONSTITUTION:A conductive magnetic core 7 is energized by a power supply 9, and a current (i) flows as shown by an arrow head along the magnetic path of the core 7 and across an action magnetic gap (g). Thus the uniaxial anisotropy is produced in the direction orthogonal to the current (i), i.e., the magnetic path of an artificial ring shape. Thus the permeability of the core 7 is improved at a high frequency band together with the reproduction sensitivity of a head. While the direction of the uniaxial anisotropy can be changed with control of the current value when the core 7 is energized as long as said anisotropy is previously provided to the core 7 in the prescribed direction, i.e., the circumferential direction of said artificial ring. This improves the reproduction sensitivity of the head at an optional frequency band.
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