公开(公告)号：JPS60257615A

公开(公告)日：1985-12-19

申请号：JP11479584

申请日：1984-06-05

Applicant: SONY CORP

Inventor： MURAKAMI YOSHIKAZU ,  ITOU SEIGO ,  YAMADA TOSHIROU

IPC: H01P1/217 ,  H01P7/00 ,  H03J3/04

Abstract: PURPOSE:To prevent a tracking error due to temperature change by using a ferromagnetic thin film element respectively for a magnetic resonance element for a filter circuit and the 1st and 2nd local oscillating circuits and adopting the same aspect ratio to them. CONSTITUTION:The ferrimagnetic thin films 27, 55 are coated to one face of paramagnetic substrates 29, 56 to form pattern thereby forming a thin film magnetic resonance element. Each thin film element is formed to the same material, same shape and size mutually and the aspect ratio is selected identically. Grounding conductors 22, 52 are adhered to the back side of dielectric substrates 21, 51 made of alumina, microstrip lines 23, 24, 53 are adhered to the surface and said thin film element is arranged so as to be connected to the lines electromagnetically. The microstrip lines are connected electrically with the grounding conductors 22, 52.

公开(公告)号：JPS59180807A

公开(公告)日：1984-10-15

申请号：JP5565483

申请日：1983-03-31

Applicant: Sony Corp

Inventor： TAMADA HITOSHI ,  KANEKO MASAHIKO ,  OKAMOTO TSUTOMU ,  YAMADA TOSHIROU

IPC: G11B5/02 ,  G11B11/10 ,  G11B11/105

CPC classification number: G11B5/02

Abstract: PURPOSE:To shift the bit information to a prescribed position with high stability by forming a cylindrical magnetic domain magnetized reverse to the magnetizing direction of a bias magnetic field at a prescribed position in a magnetized film and then irradiating the light to said magnetic domain with such a level of intensity that can produce a difference of temperatures between both ends of the magnetic domain. CONSTITUTION:A medium 1 is fixed in a loadable/unloadable way to a bias magnetic field generating means 2 consisting of a permanent magnet, and a bias magnetic field is always applied to the entire surface of the medium 1 especially at an oxide film 1b. The medium 1 and therefore the magnetic field generator 2 can be shifted by a motor 3, and at the same time an auxiliary bias coil 4 is set at the periphery of the medium 1 to increase the bias magnetic field when necessary. The laser light given from an argon laser of a light generator 5 is led into an optical modulator 6 for the medium 1 and then extracted in the form of the pulse light. This pulse light is made incident to a lens 9 via a polarizer 7 and a half mirror 8 to form a bit. Then the pulse light of 5.0mus width is irradiated at a position distant away from the recording bit by a distance xmum to measure the minimum laser power with which the bit can be shifted to the position irradiated by the pulse light. If x approx.

Abstract translation: 目的：通过在磁化膜中的规定位置形成与偏磁场的磁化方向相反的磁化方向磁化的圆柱形磁畴，然后用这样的方式将光照射到所述磁畴，从而将位信息转移到具有高稳定性的指定位置 能够产生磁畴两端之间的温度差的强度水平。 构成：介质1以可加载/卸载的方式固定到由永磁体组成的偏置磁场产生装置2，并且总是将偏置磁场施加到介质1的整个表面，特别是在氧化膜1b上。 因此，介质1和磁场发生器2可以通过马达3移动，并且同时在介质1的周围设置辅助偏置线圈4，以在需要时增加偏置磁场。 由光发生器5的氩激光器给出的激光被引入用于介质1的光调制器6，然后以脉冲光的形式提取。 该脉冲光通过偏振器7和半反射镜8入射到透镜9以形成一位。 然后将5.0m宽度的脉冲光照射在远离记录位置的距离xmum处，以测量该位可以移动到由该脉冲光照射的位置的最小激光功率。 如果满足x约<5mum，则通过大于最小功率的脉冲光的照射，可以高精度地移位该位。

公开(公告)号：JPS5956202A

公开(公告)日：1984-03-31

申请号：JP16732182

申请日：1982-09-25

Applicant: Sony Corp

Inventor： KANEKO MASAHIKO ,  OKAMOTO TSUTOMU ,  TAMADA HITOSHI ,  YAMADA TOSHIROU

IPC: G11B5/02 ,  G11B11/10 ,  G11B11/105 ,  G11B13/04

CPC classification number: G11B13/045

Abstract: PURPOSE:To record a recording bit in the center part of a recording light spot stably with a low power, a high resolution, a high density, and a high sensitivity, by specifying the characteristic of a film of easy vertical magnetization of the surface of a soft magnetic film. CONSTITUTION:An electromagnet 7 is arranged which gives a bias magnetic field from the external in the thickness direction of a medium 3 having a film 2 of easy vertical magnetization of the surface of a soft magnetic film where the low magnetic force of the magnetic wall is specified to a certain value or smaller, and the state where a single magnetic domain exists throughout the visual field and magnetization is directed to the direction vertical to the film surface is set. In this state, a pulse light 8 modulated by a modulator 5 passes through a polarizer 9 to be polarized linearly and is condensed to the film 2 by a condenser lens 10. The temperature is raised locally in accordance with the modulated laser beam light, and information is recorded on the film 2 as a cylindrical magnetic domain whose direction is opposite to that of the bias magnetic field.

Abstract translation: 目的：通过指定易于垂直磁化的膜的特性，以低功率，高分辨率，高密度和高灵敏度稳定地记录记录光点的中心部分的记录位 软磁膜。 构成：电磁体7被布置成从介质3的厚度方向的外部给出偏置磁场，该介质3具有软磁性膜的表面容易垂直磁化的磁性膜2，其中磁壁的低磁力为 指定为一定值以下，并且设定整个视野存在单个磁畴并且磁化指向垂直于膜表面的方向的状态。 在这种状态下，由调制器5调制的脉冲光8通过偏振器9被线性偏振，并通过聚光透镜10与膜2会聚。根据被调制的激光束光使温度升高，并且 信息被记录在膜2上，作为其方向与偏置磁场的方向相反的圆柱形磁畴。

公开(公告)号：JPS5712427A

公开(公告)日：1982-01-22

申请号：JP8443080

申请日：1980-06-20

Applicant: SONY CORP

Inventor： MATSUDA HIDEKI ,  YAMADA TOSHIROU

IPC: G11B11/10 ,  G11B11/105

Abstract: PURPOSE:To increase the response speed limit, by providing a soft magnetic film surface vertical easy magnetized film in such way that the magnetic anisotropy of the said film become parallel to the shifting direction of a magnetic medium. CONSTITUTION:A magnetic garnet film 2b composed of Eu2.09La0.75Ca0.16Ge0.16 Al0.55Ga0.12Fe4.17O12 is provided on the back of a GdGa garnet substrate 2a, and then a diffusion preventing film of SiO2, an Al vapor-deposited film 2e and an SiO2 protective film are provided. A resistive coating 20 is applied on the upper surface of the substrate 2a. A soft magnetic garnet film 2 is provided so that the direction of its magnetic anisotropy is parallel to the shifting direction (arrow mark) of a magnetic tape 1. For instance, the beam given from an He-Ne laser is condensed to the film 2 via a polarizer 4 and a beam spliter 6. For the reflected light that receives the Faraday optical rotation corresponding to the magnetization of the film 2, the light modulated signal enters a photoelectric transducer 8 via photodetector 7. Thus an electric signal 9 corresponding such light modulated signal is delivered. As a result, the response speed limit can be increased.

公开(公告)号：JPS5459915A

公开(公告)日：1979-05-15

申请号：JP12619377

申请日：1977-10-20

Applicant: SONY CORP

Inventor： NAGAMURO MASAMI ,  YAMADA TOSHIROU ,  MAKINO YOSHIMI

IPC: G11B5/02 ,  G11B5/39 ,  G11B5/49 ,  G11B11/10 ,  G11B11/105 ,  H01F10/22

Abstract: PURPOSE:To hold the high-density recorded magnetic recording signal always at good S/N and read the same by disposing a soft magnetic film face easy vertical magnetization film on a magnetic recording medium. CONSTITUTION:The soft magnetic film face easy vertical magnetization film device 2 provided with a soft magnetic film face easy vertical magnetization film 2b composed of transparent YSmCaFeGe base garnet, a diffusion preventing film 2d composed of silicon dioxde, a reflecting film 2e composed of aluminum, a protecting film 2f composed of silicon dioxide and a non-reflection coating layer 2c is provided on a substrate 2a of GdGa garnet in the position in contact with a magnetic tape 1. Then, the maze domains of the soft magnetic film face easy vertical magnetization film 2b are modulated by the leakage magnetic field produced from the magnetic recording signals of the magnetic tape and the modulated domain signal is read out by the light which is radiated to this film 2b from a light source generator 3 via polarizer 4, beam splitter 5, etc., is reflected thereby and enters a photoelectric transducer via analyzer 7.

公开(公告)号：JPS60260202A

公开(公告)日：1985-12-23

申请号：JP11722984

申请日：1984-06-07

Applicant: SONY CORP

Inventor： MURAKAMI YOSHIKAZU ,  ITOU SEIGO ,  YAMADA TOSHIROU

IPC: H01P1/218

Abstract: PURPOSE:To improve the filter characteristic by coupling electromagnetically two strip lines so as to form an attenuation pole in a band-pass filter comprising a magnetic resonance element of ferrimagnetic property. CONSTITUTION:The microstrip lines 1, 2 being input and output transmission lines are provided. A microstrip line 3 coupled electromagnetically with them and magnetic resonator elements 4, 5 is provided. Each part of the lines 1, 2 is made closed together so as to form a coupling part coupled electromagnetically. The attenuation pole is produced near both sides of the center frequency of pass band by providing the electromagnetic coupling 6 to the lines 1, 2 in this way. Thus, the pass band is made steep and generation of the spurious characteristic is reduced and the filter characteristic is improved.

公开(公告)号：JPS60107750A

公开(公告)日：1985-06-13

申请号：JP21486383

申请日：1983-11-15

Applicant: SONY CORP

Inventor： KANEKO MASAHIKO ,  TAMADA HITOSHI ,  OKAMOTO TSUTOMU ,  YAMADA TOSHIROU

IPC: G11B5/02 ,  G11B11/10 ,  G11B11/105

Abstract: PURPOSE:To enable recording of bit information even if a semiconductor laser having a long wavelength is used by impressing a bias magnetic field in such a way that magnetization attains the state facing one perpendicular direction with respect to the film plane and making pulses of light incident on the single magnetic domain thereof thereby recording the bit information. CONSTITUTION:A film 2 having the axis of easy magnetization prependicularly to the plane of the soft magnetic film to be subjected to recording by magnetic bubbles is deposited and formed on a crystal base plate 1 and a metallic film 3 is laminated thereon so as to be directly adjacent thereto to constitute a recording medium 4. The metal for the film 3 refers to transition metals of the I b, IIb group, IIIa, IVa, Va, VIa, VIIa group and VIII group in periodic table and are enumerated by Al, Cr or the alloys thereof as a representative example. A bias magnetic field is impressed to the film 2 in such a way that the single magnetic domain is formed over the front surface thereof and that the magnetization attains the state facing one direction perpendicular to the film plane. Light pulses having a prescribed wavelength are made incident on the single magnetic domain thereof to form the cylindrical magnetic domain magnetized in the direction opposite from the magnetization direction of the bias magnetic field impressed to the film, by which the bit information is recorded.

公开(公告)号：JPS59180806A

公开(公告)日：1984-10-15

申请号：JP5565383

申请日：1983-03-31

Applicant: Sony Corp

Inventor： TAMADA HITOSHI ,  KANEKO MASAHIKO ,  OKAMOTO TSUTOMU ,  YAMADA TOSHIROU

IPC: G11B5/02 ,  G11B5/00 ,  G11B5/09 ,  G11B11/10 ,  G11B11/105 ,  G11B13/04 ,  G11C11/14 ,  G11C13/06 ,  G11C19/08

CPC classification number: G11C19/0858 ,  G11B5/00 ,  G11B5/09 ,  G11B13/045 ,  G11C11/14 ,  G11C13/06 ,  G11C19/0833

Abstract: PURPOSE: To shift the bit information to a prescribed position with high stability by setting the shift position of a recording bubble by making use of the force acting on a magnetic bubble which is produced by the change of the magnetic energy at the areas where a magnetized film has different levels of thickness.
CONSTITUTION: An information magnetic bubble (b) can be shifted to a point B from a point A along a stage part 22a by the restricting force generated at the part 22a to the bubble (b). For hollow parts 21 arrayed on a straight line, respective points A and B are defined as the 1st and 2nd tracks Tr
1 and Tr
2 respectively at each part 21. Then CW, i.e., a cue and bubble (c) and (b) are shifted along a straight line (a) which is distant away from the track Tr
1 as well as along the TR
1 . With this shift of the (c) and (b), information bubbles b(b
1 W b
2n ) on each point A(A
1 WA
2n ) of each part 21, i.e., on the TR
1 can be shifted to respective corresponding points B(B
1 WB
2n ) within each part 12, i.e., on the Tr
2 respectively.
COPYRIGHT: (C)1984,JPO&Japio

Abstract translation: 目的：通过利用由磁化的区域上的磁能的变化产生的作用在磁性气泡上的力，通过设定记录气泡的位移位置来将位信息转移到具有高稳定性的指定位置 胶片具有不同的厚度。 构成：通过在部分22a处产生的限制力到气泡（b），信息磁性气泡（b）可以从点A沿着平台部分22a移动到点B。 对于排列在直线上的中空部分21，各个点A和B分别在每个部分21被定义为第一和第二轨道Tr1和Tr2。然后CW，即，提示和气泡（c）和（b）被移位 沿着远离轨道Tr1以及沿着TR1的直线（a）。 通过（c）和（b）的这种移动，每个部分21（即，在TR1上）的每个点A（A1-A2n）上的信息气泡b（b1- b2n）可以移动到相应的对应点B -B2n），即分别在Tr2上。

公开(公告)号：JPS57175792A

公开(公告)日：1982-10-28

申请号：JP5769981

申请日：1981-04-16

Applicant: SONY CORP

Inventor： YORIZUMI MINEO ,  YAMADA TOSHIROU ,  TAMURA HIDEMASA

IPC: C30B13/00 ,  C30B13/22 ,  C30B13/24 ,  H05B3/00

Abstract: PURPOSE:To make it possible to prevent the occurrence of the deterioration and cracks of a grown crystal, by annealing a grown single crystal part with a subheater unit in a seed crystal growing apparatus. CONSTITUTION:A seed crystal of a single crystal is mounted on a platinum plate 78 joined flexibly to an alumina rod 77 provided at the tip of a rotating and driving shaft 72, and a raw polycrystalline material 83 is mounted on a rotating and driving shaft 73. The rotating and driving shafts 72 and 73 are set to position the joined part of the seed crystal to the polycrystalline material 83 at a focus (E2) of an infrared heating chamber 2, and the joined part is heated by infrared rays 5 from a lamp 3 in a molten state. The rotating and driving shafts 72 and 73 are slowly lowered while rotated and driven mutually in the opposite directions, and a molten part 84 of a material 4 to be treated is relatively lifted. Thus, a single crystal part 80 is grown under the molten part 84 and introduced into a heat generating part 14 of a subheater unit 13 gradually and annealed.

公开(公告)号：JPS6038783A

公开(公告)日：1985-02-28

申请号：JP14545783

申请日：1983-08-09

Applicant: SONY CORP

Inventor： TAMADA HITOSHI ,  KANEKO MASAHIKO ,  OKAMOTO TSUTOMU ,  YAMADA TOSHIROU

IPC: G11B5/00 ,  G11B5/09 ,  G11B13/04 ,  G11C13/06

Abstract: PURPOSE:To stabilize recording and movement of recording bits stably by forming a part having a different magnetic energy in a soft magnetic film magnetized easily vertically to the film surface by ion implantation and generating a cylindrical magnetic domain along the boundary part between this part and a part different in magnetic energy. CONSTITUTION:An area 21 having a different magnetic energy is formed in the soft magnetic film magnetized easily vertically to the film surface, to which a bias magnetic field is so applied that magnetization is vertical to the film surface and is directed to one direction, by ion implantation. A magnetic bubble (b) of the cylindrical magnetic domain is formed in the left upper corner or the like of the boundary part between the area 21 and an area, where ions are not implanted, along the boundary part by irradiation or laser light or the like to perform thermal magnetooptic recording. Then, the bubble (b) is recorded stably in this boundary part because force Fc applied to the bubble (b) is a prescribed value. Similarly, the bubble (b) is moved stably along boundaries of the area 21 to move recording bits stably.