公开(公告)号：JPS6364313A

公开(公告)日：1988-03-22

申请号：JP20870586

申请日：1986-09-04

Applicant: SONY CORP

Inventor： ISHIKAWA OSAMU ,  HAYASHI KAZUHIKO ,  HAYAKAWA MASATOSHI ,  OCHIAI YOSHITAKA ,  MATSUDA HIDEKI ,  IWASAKI HIROSHI ,  ASO KOICHI

IPC: C22C38/00 ,  H01F10/16

Abstract: PURPOSE:To obtain a magnetically soft thin film of a high coercive force by adding at least one of Ti, Cr, Mn, Zr, Nb, Mo, Ta and the like to a magnetically soft thin film mainly composed of Fe, Co, Al, Si, thereby enhancing the abrasion resistance. CONSTITUTION:A magnetically soft thin film is represented by a composition formula FeaCobAlcSidMe(where a, b, c, d, e respectively express the composition ratios as an tomic %, and M expresses at least one of Ti, Cr, Mn, Zr, Nb, Mo, Ta, W, Ru, Os, Ir, Re, Ni, Pd, Pt, Hf). The composition range satisfies the relations: 5

公开(公告)号：JPS62104111A

公开(公告)日：1987-05-14

申请号：JP24462685

申请日：1985-10-31

Applicant: SONY CORP

Inventor： HAYASHI KAZUHIKO ,  HAYAKAWA MASATOSHI ,  ISHIKAWA OSAMU ,  OCHIAI YOSHITAKA ,  MATSUDA HIDEKI ,  IWASAKI HIROSHI ,  ASO KOICHI

IPC: H01F10/16 ,  C22C38/00 ,  C22C38/10

Abstract: PURPOSE:To contrive the improvement in the resistance to corrosion and abra sion without deteriorating a soft magnetic characteristic by specifying the compo sition ranges of Co, Si and Al and further adding Ru of specified atm% in an alloy thin film of Fe-Co-Si-Al group. CONSTITUTION:This soft magnetic thin film is mainly composed of Fe, Co, Si and Al and the composition ranges of said Co, Si and Al are 1-15atm% Co and 10-20atm% Si, 8-15atm% Al. Furthermore, Ru of 0.1-10atm% is included. In case of the composition of the soft magnetic thin film as Fe68Co10 Al9Si13-xRux (figures represent atm%), when the quantity of abrasion 15 examined while changing the addition quantity (x) of Ru, the quantity of abrasion becomes extremely small according to an increase in addition quantity of Ru, for example, even after the 30hr running of a magnetic head and more sperior resistance to abrasion than Sendust can been observed when Ru is 4atm%.

公开(公告)号：JPS62104105A

公开(公告)日：1987-05-14

申请号：JP24456485

申请日：1985-10-31

Applicant: SONY CORP

Inventor： ISHIKAWA OSAMU ,  HAYASHI KAZUHIKO ,  HAYAKAWA MASATOSHI ,  OCHIAI YOSHITAKA ,  MATSUDA HIDEKI ,  IWASAKI HIROSHI ,  ASO KOICHI

IPC: H01F10/12 ,  C22C38/00

Abstract: PURPOSE:To provide a soft magnetic thin film having high saturation magnetic flux density Bs, small coersive force Hc, high permeability mu, and especially sperior abrasion property by specifying the composition of the soft magnetic thin film formed of an Fe(-Co)-Ga-Si alloy added with Cr. CONSTITUTION:This soft magnetic thin film is of the composition represented by a formula, FeaCobGacSidCre (wherein a, b, c, d and e show atomic % of the respective composition ratio) and their composition ranges are the values expressed by inequalities, 68

公开(公告)号：JPS6292305A

公开(公告)日：1987-04-27

申请号：JP23126785

申请日：1985-10-18

Applicant: SONY CORP

Inventor： HAYASHI KAZUHIKO ,  ISHIKAWA OSAMU ,  HAYAKAWA MASATOSHI ,  OCHIAI YOSHITAKA ,  MATSUDA HIDEKI ,  IWASAKI HIROSHI ,  ASO KOICHI

IPC: H01F10/14 ,  C22C38/00 ,  C22C38/06

Abstract: PURPOSE:To improve corrosion resistance and wear resistance to a large extent, and prevent deterioration in soft magnetic characteristic and decrease in saturation magnetic flux density, by adding Ru to Sendust alloy whose basic components are Fe, Al and Si, CONSTITUTION:The main components of the titled device are Fe, Al and Si whose constitution ranges are 3-10wt% for Al and 5-15wt% for Si, and moreover, Ru of 2-15wt% is contained. The addition of Ru is extremely effective to improve corrosion resistance and wear resistance. For example, the amount of wear is investigated by varing the Ru addition amount (x) to the soft magnetic thin film whose composition is Fe72-x Rux Si17 Al11 (where numerical values indicate wt%). This result shows remarkable effects in reducing the amount of wear as shown in the figure.

公开(公告)号：JPS6278805A

公开(公告)日：1987-04-11

申请号：JP21873785

申请日：1985-10-01

Applicant: SONY CORP

Inventor： HAYASHI KAZUHIKO ,  HAYAKAWA MASATOSHI ,  OCHIAI YOSHITAKA ,  MATSUDA HIDEKI ,  ISHIKAWA OSAMU ,  IWASAKI HIROSHI ,  ASO KOICHI

IPC: H01F10/16 ,  C22C38/00 ,  C22C38/10 ,  G11B5/127

Abstract: PURPOSE:To make the saturated magnetic flux density of the titled soft magnetic thin film higher than that of the Sendust alloy without changing soft magnetic characteristics and the like by a method wherein Fe, Co, Ga and Si are selected as the constituent elements of the soft magnetic thin film, and the compositional ratio of said elements is set within the prescribed range. CONSTITUTION:In order to increase the density of saturated magnetic flux, the composition of the titled soft magnetic thin film is set as FexCoyGaaSib (the compositional ratio of x, y, a and b is indicated by atomic %) taking into consideration of the fact that the point of intersection of the line of magnetostriction lambdas=0 with the line of crystal magnetic anisotropy K=0 is to be set closer to the side of Fe high density, and that the rate of reduction of magnetic moment in absolute zero and the addition of Co improves the density of saturated magnetic flux, the corrosion resistance and the abrasion resistance of the soft magnetic thin film. In this compositional ratio, when the adding quantity of Co is too much, the density of saturated magnetic flux and soft magnetic characteristics are deteriorated in inverse proportion to the corrosion resistance and the abrasion resistance. Therefore, the compositional ratio of the material used is set as follows: 65

公开(公告)号：JPS6169103A

公开(公告)日：1986-04-09

申请号：JP19097384

申请日：1984-09-12

Applicant: Sony Corp

Inventor： HAYASHI KAZUHIKO ,  OCHIAI YOSHITAKA ,  HAYAKAWA MASATOSHI ,  MATSUDA HIDEKI ,  ISHIKAWA OSAMU ,  IWASAKI HIROSHI ,  ASO KOICHI

IPC: G11B5/147 ,  H01F1/18

CPC classification number: H01F1/18 ,  Y10S428/928 ,  Y10T428/1129 ,  Y10T428/12465 ,  Y10T428/12597 ,  Y10T428/12632 ,  Y10T428/12861

Abstract: PURPOSE:To prevent the substantial reduction in permeability especially in the super high frequency zone of 10MHz or above by a method wherein a plurality of layers of metal magnetic material layers are laminated through an electric insulating layer, and between each metal magnetic material layer is electrically short-circuited locally. CONSTITUTION:Metal magnetic material layers 1a-1c are laminated through the intermediaries of electric insulating layers 2a and 2b and, at the same time, a conductive material layer 3 with which between metal magnetic material layers 1a and 1c is electrically short-circuited locally is formed in deposition on one side face of the laminated body. An eddy current runs along the closed curved line E as shown by arrows in the diagram. As the high frequency eddy current runs on the conductive material layer 3, the part (shaded part) which is turned to an almost reactive region judging from the view-point of permeability, is reduced remarkably. As a result, the lowering of permeability in an extra-high frequency zone can be prevented effectively.

Abstract translation: 目的：为了防止渗透性的显着降低，特别是在10MHz以上的超高频区域中，通过电绝缘层层叠多层金属磁性体层，并且在各金属磁性体层之间， 当地短路。 构成：金属磁性体层1a-1c通过电绝缘层2a和2b的中间层叠，同时在金属磁性体层1a和1c之间的局部电短路的导电材料层3是 在层叠体的一个侧面上沉积形成。 涡流沿着封闭的曲线E运行，如图中的箭头所示。 随着高频涡流在导电材料层3上的流动，从导磁率的视点判断为几乎反应的区域的部分（阴影部分）显着减少。 结果，可以有效地防止超高频区域的磁导率的降低。