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公开(公告)号：JPS60229208A
公开(公告)日：1985-11-14
申请号：JP8486784
申请日：1984-04-26
Applicant: SONY CORP
Inventor： ASO KOUICHI , WATABE SHIYOUZOU
Abstract: PURPOSE:To improve both recording and reproducing characteristics by arranging closely and integrating a recording magnetic film for recording with high magnetic flux density and a magnetic film for high permeability reproduction and providing a head winding used in common with respect to both the magnetic films. CONSTITUTION:A magnetic film 6R is made of a material such as silicon steel having a high magnetic flux density but comparatively low permeability and the thickness is made sufficiently thin. Moreover, the magnetic film 6P is made of an alloy such as Fe-Ni alloy having a comparatively low magnetic flux density but a high permeability. The magnetic films 6R, 6P are arranged closely, they are bonded integrally via a high resistance layer 7 and the common use head winding 9 is provided. Then the recording is executed by the magnetic film 6R and the magnetic film 6P is used for the reproduction. Since a material suitable for recording and reproduction is selected for both the magnetic film materials independently, both the recording and reproducing characteristics are improved.
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公开(公告)号：JPS59227014A
公开(公告)日：1984-12-20
申请号：JP10144683
申请日：1983-06-07
Applicant: SONY CORP
Inventor： OCHIAI YOSHITAKA , ASO KOUICHI , KAMIHIRA AKIRA , HAYAKAWA MASATOSHI , MATSUDA HIDEKI , HAYASHI KAZUHIKO , ISHIKAWA OSAMU
Abstract: PURPOSE:To cause no magnetic deterioration in a core due to joining of the core and a reinforcing body, by placing the reinforcing body between amorphous magnetic thin film cores and fusion-bonding the reinforcing body and the thin film core into one body by a solder of a low melting point. CONSTITUTION:A reinforcing body is placed on both surfaces, of amorphous magnetic thin film cores 3a, 3b placed inbetween, and this thin film core and the reinforcing body are joined by a solder 7 of a solder a low melting point. The low melting solder whose melting point is 123 deg.C or 143 deg.C is used. In this case, if there is a problem in an adhesive property of this low melting point solder and the amorphous magnetic thin film core, or an dhesive peroperty of this low melting point solder and the reinforcing body, a material component of this thin film, for instance, a non-magnetic layer of a spatteringing film of Si, or a non-magnetic layer made by spattering, etc. of SiO2 is stuck to the surface of the thin film core, and in the reinforcing body side, too, an amorphous non- magnetic layer can be formed by spattering in the same way as necessary.
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公开(公告)号：JPS5921004A
公开(公告)日：1984-02-02
申请号：JP13093582
申请日：1982-07-27
Applicant: Sony Corp
Inventor： HAYASHI KAZUHIKO , ASO KOUICHI , KAMIHIRA AKIRA , OCHIAI YOSHITAKA , HAYAKAWA MASATOSHI , MATSUDA HIDEKI , HOTAI KAZUHIDE
CPC classification number: H01F1/153
Abstract: PURPOSE:To maintain ductility of amorphous magnetic material and increase the saturation magnetic flux density and further improve the anticorrosion and antiabrasion, by a method wherein constituents represented by Ap, Bq, Cr, Ds and ratio are specified. CONSTITUTION:When represented by general formula Ap, Bq, Cr, Ds (p+q+r+ s=100at%), constituent amounts p, q, r, s are selected in regions 70
Abstract translation: 目的：通过规定由Ap，Bq，Cr，Ds和比率表示的成分的方法，为了保持非晶磁性材料的延展性并增加饱和磁通密度，并进一步改善抗腐蚀和抗磨损性。 构成：当由通式Ap，Bq，Cr，Ds（p + q + r + s = 100at％）表示时，在区域70
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公开(公告)号：JPS599157A
公开(公告)日：1984-01-18
申请号：JP11901382
申请日：1982-07-08
Applicant: Sony Corp
Inventor： HAYAKAWA MASATOSHI , ASO KOUICHI , KAMIHIRA AKIRA , OCHIAI YOSHITAKA , MATSUDA HIDEKI , HOTAI KAZUHIDE , HAYASHI KAZUHIKO
CPC classification number: H01F1/15341 , C21D1/04
Abstract: PURPOSE: To increase the magnetic permeability of a thin amorphous magnetic alloy plate even when the alloy composition has high saturation magnetic flux density by keeping the plate at a specified temp. and by alternately impressing magnetic fields to the plate in directions which are perpendicular to each other at equal time intervals to heat treat the plate.
CONSTITUTION: A thin amorphous magnetic alloy plate 1 is put in an electric furnace and kept at a temp. below the crystallization temp. of the alloy and below the Curie temp. By supplying electric currents to coils 2, 3 wound around the plate 1 perpendicularly to each other, magnetic fields which meet at right angles are alternately generated to heat treat the plate 1. At this time, electric currents are supplied to the coils 2, 3 in accordance with timing wave-forms 4, 5 shown by the figure. This method is applicable to an amorphous magnetic alloy having a cooling effect in a magnetic field, and high magnetic permeability can be given even to a composition having ≥10,000 saturation magnetic flux density. Accordingly, a superior material for the soft magnetic core of a magnetic head, etc. can be provided.
COPYRIGHT: (C)1984,JPO&JapioAbstract translation: 目的：为了提高薄的非晶磁性合金板的磁导率，即使当合金组成通过将板保持在特定温度时具有高饱和磁通密度时。 并且通过以相等的时间间隔相互垂直的方向交替地向板施加磁场，以对板进行加热处理。 构成：将薄的无定形磁性合金板1放入电炉中并保持在温度 低于结晶温度 的合金，低于居里温度。 通过向卷绕在板1上的线圈2,3提供电流，交替地产生垂直相交的磁场，以对板1进行热处理。此时，电流被提供给线圈2,3 按照波形图4,5，如图所示。 该方法适用于在磁场中具有冷却效果的非晶磁合金，甚至可以赋予具有> = 10000饱和磁通密度的组成的高磁导率。 因此，可以提供用于磁头等的软磁芯的优良材料。
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公开(公告)号：JPS5779157A
公开(公告)日：1982-05-18
申请号：JP15398580
申请日：1980-10-31
Applicant: Sony Corp
Inventor： MAKINO YOSHIMI , OCHIAI YOSHITAKA , KAMIHIRA AKIRA , HOTAI KAZUHIDE , ASO KOUICHI , HAYAKAWA MASATOSHI
Abstract: PURPOSE: To obtain an amorphous magnetic alloy with high permeability and high saturation magnetic flux density by heat-treating an amorphous magnetic alloy at a temp. below the crystallization temp. in a magnetic field while rotating the alloy at a specified relative speed.
CONSTITUTION: An amorphous magnetic alloy such as Fe
4.7 Co
75.3 Si
4 B
16 is heat- treated in a static or rotary magnetic field while relatively rotating the alloy at a speed represented by equation I[where R is speed of rotation (rotational frequency), τ
0 is average time consumed before said alloy reaches the thermal equilibrium of induced magnetic anisotropy, and n is an arbitrary natural number]. At this time, it is required to conduct the heat treatment at a temp. below the crystallization temp. of said alloy. Thus, the desired amorphous magnetic alloy with high permeability and high saturation magnetic flux density is obtd. This alloy is suitable for use as a material for the soft magnetic core of a magnetic head, etc. Said relative rotation includes 3-dimensional rotation as well as 2-dimensional rotation.
COPYRIGHT: (C)1982,JPO&JapioAbstract translation: 目的：通过在室温下对非晶磁性合金进行热处理，获得具有高磁导率和高饱和磁通密度的无定形磁性合金。 低于结晶温度 同时以特定的相对速度旋转合金。 构成：将Fe4.7Co75.3Si4B16等非晶磁性合金在静态或旋转磁场中进行热处理，同时以等式I [R]为转速（转速）表示的速度相对旋转合金，τ0为 在所述合金达到感应磁各向异性的热平衡之前消耗的平均时间，n是任意的自然数]。 此时，需要在温度下进行热处理。 低于结晶温度 的所述合金。 因此，具有高磁导率和高饱和磁通密度的期望的非晶磁性合金是可以理解的。 该合金适合用作磁头的软磁芯等的材料。所述相对旋转包括三维旋转以及二维旋转。
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Patent Agency Ranking
公开(公告)号：JPS565962A
公开(公告)日：1981-01-22
申请号：JP8095579
申请日：1979-06-27
Applicant: SONY CORP
Inventor： MAKINO YOSHIMI , HAYAKAWA MASATOSHI , ASO KOUICHI , KAMIHIRA AKIRA , ITOU MORIYASU , HOTAI KAZUHIDE
Abstract: PURPOSE:To considerably enhance the permeability of an amorphous magnetic alloy material by heat treating the material at a temp. below the crystallization temp. in a static or rotating magnetic field while rotating it relatively to the field to eliminate induced magnetic anisotropy. CONSTITUTION:A mangetic Fe-Co-Si-B alloy is refined, and the molten alloy is very rapidly cooled by a centrifugal rapid cooling method, a one-roll method, a twin-roll method or other method to manufacture an amorphous ribbonlike alloy sheet. This sheet is held by a holder and heat treated at 300 deg.C which is below the crystallization temp. for 60min while being rotated in 5kOe a DC magnetic field with a motor undergoing 20 revolutions per sec. The heat treated sheet is then cooled while being rotated in the field. At this time, the direction of the field is made parallel with the upper surface of the sheet, that is, the surface of rotation. Thus, an amorphous alloy can easily be manufactured which is suitable for use as a soft magnetic core material for a magnetic head, etc. and has high permeability and high saturation magnetic flux density.
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公开(公告)号：JPS5456919A
公开(公告)日：1979-05-08
申请号：JP12364477
申请日：1977-10-15
Applicant: SONY CORP
Inventor： ASO KOUICHI , KAMIHIRA AKIRA , TAMURA HIDEMASA , ITOU MORIYASU , MAKINO YOSHIMI
Abstract: PURPOSE:To provide the subject alloy having a high permeability, and being excellent in magnet-resisting workability and resin-resisting moldability, and comprising more than a member selected from the group consisting of Mo, Mn, V and Al, a specific quantity of more than a member selected from the group consisting of amorphousness-forming elemnts such as Si, B and Ge, and the residual part the magor part of which consists of Fe. CONSTITUTION:This alloy comprises more than a member selected from the group consisting of Mo, Mn, V and Al (in this case, 2 to 20 at % of more than a member selected from the group consisting of Mo, Mn, and V and 0.1 to 30 at % of Al are contained), 10 to 30 at % of more than a member selected from the group consisting of amorphousness-forming elements such as Si, B and Ge, and 70 to 90 at % of the residual part the major part of which consists of Fe. It is preferable that when Si, B and Ge as amorphousness-forming elements are pepresented by Six By and Gez, where x+y+z=1, respective components be selected in the range, x
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公开(公告)号：JPS5456406A
公开(公告)日：1979-05-07
申请号：JP12267477
申请日：1977-10-13
Applicant: SONY CORP
Inventor： KAMIHIRA AKIRA , ASO KOUICHI , ITOU MORIYASU
Abstract: PURPOSE:To make magnetic path substantially continuous and increase the magnetic flux at the operating gap portion by forming the magnetic head from a pair of core materials through coupling the end parts of the core materials by means of a ferromagnetic amorphous alloy layer at the back gap side. CONSTITUTION:The portions of a pair of head chips 3, 4 other than the end parts 3a, 4a on their back gap 5 side are masked with photo resist or insoluble paint. With the head chips 3, 4 as one electrode, electric plating is applied to the head chips and a ferromagnetic amorphous alloy lear 6 is depositied on the portion of the back gap part 5, whereby these are bonded and integrated. The solution comprising, e.g., iron sulfamate; 56 (g/l), L-ascorbic acid; 5 (g/l), urea; 120 (g/l), ammonium sulfamate; 49 (g/l), sodium hypophosphite; 10.6 (g/l), brightener; slight is used as the plating solution, and the pH of the solution is desirably about 1 to 2.2 and the current density about 5 to 20A/(dm) .
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公开(公告)号：JPS5454613A
公开(公告)日：1979-05-01
申请号：JP12176377
申请日：1977-10-11
Applicant: SONY CORP
Inventor： KAMIHIRA AKIRA , ITOU MORIYASU , ASO KOUICHI
Abstract: PURPOSE:To form narrow gaps readily with good accuracy and enable abrasion resistance of heads to be made by forming a non-ferromagnetic metal layer which becomes an operating gap through electroplating and binding the same with other core material and amorphous alloy layer. CONSTITUTION:An amorphous alloy layer 3 is electroplated on the gap face 2 of a head chip 1 and its neighborhood and is then polished in approximately parallel with the face 2, whereby a gap forming face 4 is obtained. Next, a non-ferromagnetic metal (alloy) layer 5 is electroplated to the thickness corresponding to an operating gap 6 on the face 4. Over this is electroplated an amorphous alloy layer 7 of the same composition as that of the layer 3, and a groove 10 is formed in opposition to the gap face 9 of the opposing head chip 8. Next, the chip 8 is fitted in the groove 10, and the amorphous alloy layer 11 is electroplated in continuation to the layer 7, whereby an integrated amorphous alloy layer 12 is obtained. Next, the layers 3, 5, 12 are polished and a magnetic head 14 having a tape running face 13 is produced. a suitable binding agent is filled in a back gap 15.
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公开(公告)号：JPS53106340A
公开(公告)日：1978-09-16
申请号：JP2293777
申请日：1977-02-28
Applicant: SONY CORP
Inventor： MAKINO YOSHIMI , KAMIHIRA AKIRA , ITOU MORIYASU , ASO KOUICHI , KAKINUMA MITSUO , SUZUKI KOUJI
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