Method of manufacturing an amorphous magnetic alloy
    1.
    发明授权
    Method of manufacturing an amorphous magnetic alloy 失效
    无定形磁性合金的制造方法

    公开(公告)号:US4379004A

    公开(公告)日:1983-04-05

    申请号:US161077

    申请日:1980-06-19

    摘要: A method of manufacturing a high permeability amorphous magnetic alloy is disclosed. In the method amorphous magnetic alloy ribbon prepared by quenching a melt of raw material is annealed at an elevated temperature lower than a crystallization temperature of the alloy, in a magnetic field. During the annealing, the alloy ribbon and the direction of the magnetic field are relatively rotated with each other. The method is especially useful to an amorphous magnetic alloy having high saturation magnetic induction where the magnetic Curie temperature of the alloy usually exceeds the crystallization temperature of the alloy.

    摘要翻译: 公开了一种制造高磁导率非晶磁合金的方法。 在该方法中,通过淬火原料熔体制备的无定形磁性合金带在比合金的结晶温度低的高温下在磁场中退火。 在退火期间,合金带和磁场的方向相互旋转。 该方法对于具有高饱和磁感应的非晶磁合金特别有用,其中合金的磁居里温度通常超过合金的结晶温度。

    Method of manufacturing an amorphous magnetic alloy
    2.
    发明授权
    Method of manufacturing an amorphous magnetic alloy 失效
    无定形磁性合金的制造方法

    公开(公告)号:US4473415A

    公开(公告)日:1984-09-25

    申请号:US451196

    申请日:1982-12-20

    CPC分类号: H01F1/15341 C22F3/00

    摘要: A method of manufacturing an amorphous magnetic alloy having high permeability comprises the steps of:preparing an amorphous magnetic alloy ribbon having major surfaces;annealing said magnetic alloy ribbon at a temperature lower than the crystallization temperature of said alloy under the application of a first magnetic field in a first direction along said major surface for a period sufficient to induce a magnetic anisotropy in said first direction; andannealing said magnetic alloy ribbon at a temperature lower than the crystallization temperature of said alloy under the application of a second magnetic field in a second direction perpendicular to said first direction along said major surface until the induced magnetic anisotropies in said first and second directions become equal to each other.

    摘要翻译: 制造具有高磁导率的无定形磁性合金的方法包括以下步骤:制备具有主表面的非晶磁性合金带; 在低于所述合金的结晶温度的温度下,在沿着所述主表面的第一方向上施加第一磁场一段足以​​在所述第一方向上引起磁各向异性的时间,退火所述磁性合金带; 并且在所述第一和第二方向的垂直于所述第一方向的第二方向上施加第二磁场的温度低于所述合金的结晶温度的温度退火所述磁性合金带,直到所述第一和第二方向上的诱导磁各向异性变为 相等。

    Method of manufacturing an amorphous magnetic alloy
    4.
    发明授权
    Method of manufacturing an amorphous magnetic alloy 失效
    无定形磁性合金的制造方法

    公开(公告)号:US4639278A

    公开(公告)日:1987-01-27

    申请号:US564729

    申请日:1983-12-23

    CPC分类号: C22C45/04 C21D1/04

    摘要: A method of manufacturing an amorphous alloy involves thermally treating or annealing the amorphous alloy material at a temperature lower than the crystallization temperature thereof through rotation of the alloy material relative to a magnetic field at a velocity so as to meet the following relationship:R.tau..sub.O =0.5nwhereR is the number of revolutions per minute,.tau..sub.O is an average time required to cause the amorphous alloy material to reach a thermal equilibrium state of induced magnetic anisotropy, andn is an integer of at least 1.The amorphous alloy thus prepared possesses a high permeability and a high saturated magnetic flux so that it is suitable as a soft magnetic core material, such a magnetic heads.

    摘要翻译: 制造非晶态合金的方法包括通过合金材料相对于磁场的速度旋转来在低于其结晶温度的温度下对非晶合金材料进行热处理或退火,以满足以下关系:R tau O = 0.5n其中R是每分钟的转数,tau O是使非晶合金材料达到感应磁各向异性的热平衡状态所需的平均时间,n是至少为1的整数。非晶合金 因此制备的磁导率高,磁饱和磁通高,因此适合作为软磁芯材料,如磁头。

    Annealing method for amorphous magnetic alloy
    5.
    发明授权
    Annealing method for amorphous magnetic alloy 失效
    非晶磁合金退火方法

    公开(公告)号:US4475962A

    公开(公告)日:1984-10-09

    申请号:US511645

    申请日:1983-07-07

    CPC分类号: H01F1/15341 C21D1/04

    摘要: Annealing method for an amorphous magnetic alloy including the steps of preparing an amorphous magnetic alloy film, and annealing the amorphous magnetic alloy film at an elevated temperature lower than Curie temperature and crystallization temperature of the amorphous magnetic alloy film under an application of a repetition of alternately applied a first magnetic field and a second magnetic field, in which the first magnetic field is applied along one direction in a major surface of the amorphous magnetic alloy film for a predetermined period, and the second magnetic field is applied along a second direction perpendicular to the one direction in the major surface of the amorphous magnetic alloy film for the predetermined period.

    摘要翻译: 该非晶磁性合金的退火方法包括以下步骤:制备无定形磁性合金膜,并且在非晶磁性合金膜的高于不超过居里温度的升高温度和非晶磁性合金膜的结晶温度下退火, 施加第一磁场和第二磁场,其中在非晶磁性合金膜的主表面中沿着一个方向施加第一磁场一段预定时间,并且第二磁场沿垂直于第二磁场的第二方向施加 在非晶磁性合金膜主表面上的一个方向预定的时间段。

    Device for producing a high frequency modulation magnetic field used in
magneto-optical recording
    8.
    发明授权
    Device for producing a high frequency modulation magnetic field used in magneto-optical recording 失效
    用于制造用于磁光记录的高频调制磁场的装置

    公开(公告)号:US4796241A

    公开(公告)日:1989-01-03

    申请号:US5779

    申请日:1987-01-21

    IPC分类号: G11B11/105 G11B5/03 G11B11/12

    CPC分类号: G11B11/10532

    摘要: A device for producing a high frequency modulating magnetic field is disclosed. The device is especially useful to achieve real-time overwriting in magneto-optical recording. The device produces magnetic field modulated according to a signal to be recorded on a magneto-optical recording medium in which the signal is recorded in the form of magnetization direction on the magneto-optical recording medium under irradiation of a laser beam to raise the temperature of the medium. The device comprises a main magnetic pole formed of a low-loss soft magnetic material and having one end facing to the magnetic-optical recording medium and a sheathed conductor wound around the main magnetic pole and consisting of a parallel connection of a plurality of insulated elementary wires.

    摘要翻译: 公开了一种用于产生高频调制磁场的装置。 该装置对于实现磁光记录中的实时重写特别有用。 该装置根据要记录在磁光记录介质上的信号产生磁场调制,其中在激光束照射下在磁光记录介质上以磁化方向的形式记录信号,以提高温度 介质。 该器件包括由低损耗软磁材料形成的主磁极,其一端面向磁光记录介质,以及缠绕在主磁极上的护套导体,并由多个绝缘元件 电线

    High-density magnetic recording and reproducing head
    10.
    发明授权
    High-density magnetic recording and reproducing head 失效
    高密度磁记录和再现头

    公开(公告)号:US5331491A

    公开(公告)日:1994-07-19

    申请号:US847923

    申请日:1992-03-09

    IPC分类号: G11B5/127 G11B5/33

    CPC分类号: G11B5/33 G11B5/1278

    摘要: A magnetic recording and reproducing head records a signal from and reproduces a signal from a magnetic recording medium having a perpendicularly magnetizable film. The magnetic recording and reproducing head includes a magnetic sensing section comprising a slender needle of a soft magnetic material, and an exciting coil wound around the slender needle for magnetizing the slender needle to record a signal on the magnetic recording medium. To reproduced the recorded signal, high-frequency electric energy is applied to the magnetic sensing section to produce a reflected wave, and a change in the reflected wave caused by a leakage magnetic field produced by a signal recorded on the magnetic recording medium is detected as representing the recorded signal.

    摘要翻译: 磁记录和再现头记录来自具有垂直磁化膜的磁记录介质的信号并再现信号。 磁记录和重放头包括一个磁感应部分,它包括一个软磁材料的细针,以及一个缠绕在细针上的激励线圈,用于磁化细针以在磁记录介质上记录信号。 为了再现记录的信号,将高频电能施加到磁感测部分以产生反射波,并且由记录在磁记录介质上的信号产生的泄漏磁场引起的反射波的变化被检测为 表示记录的信号。