公开(公告)号：US20220172875A1

公开(公告)日：2022-06-02

申请号：US17677343

申请日：2022-02-22

申请人： KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA MATERIALS CO., LTD.

发明人： Tadao SAITO ,  Takahiro MAEDA ,  Satoru HABU

IPC分类号： H01F27/25 ,  H01F1/153

摘要： A magnetic ribbon according to an embodiment has a crystallinity degree of 0.05 or higher and 0.4 or lower when the magnetic ribbon is subjected to XRD analysis, the magnetic ribbon being Fe—Nb—Cu—Si—B-base, and the crystallinity degree being expressed by “a peak total area of a crystalline phase”/(“a peak area of an amorphous phase”+“the peak total area of the crystalline phase”). Also, the magnetic ribbon is preferred to have a region in which a KIKUCHI pattern is detected when the crystalline phase is subjected to EBSD analysis. Also, the thickness of the magnetic ribbon is preferred to be 25 μm or less.

公开(公告)号：US20240266103A1

公开(公告)日：2024-08-08

申请号：US18601662

申请日：2024-03-11

申请人： KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA MATERIALS CO., LTD.

发明人： Tadao SAITO ,  Satoru HABU ,  Takahiro MAEDA ,  Katsuhiko YAMADA

IPC分类号： H01F27/25

CPC分类号： H01F27/25

摘要： A magnetic component of an embodiment has a resin-made hollow container that houses a doughnut-shaped magnetic core, and the resin forming the hollow container exhibits a white color to gray color having a chromatic value C of 0 (achromatic) to 2 and a lightness V or 8 or higher as defined by JIS Z8721 “Color specification—Specification according to their three attributes”. The hollow container has an inner wall portion formed to form a hollow portion, an outer wall portion formed to surround the inner wall portion, and a bottom portion provided at one end of each of the inner wall portion and the outer wall portion to close a space between the inner wall portion and the outer wall portion, and houses the doughnut-shaped magnetic core between the inner wall portion and the outer wall portion.

公开(公告)号：US20220210903A1

公开(公告)日：2022-06-30

申请号：US17669636

申请日：2022-02-11

申请人： KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA MATERIALS CO., LTD.

发明人： Tadao SAITO ,  Satoru HABU

IPC分类号： H05H7/04 ,  H01F41/02 ,  H01F1/153 ,  C22C38/16 ,  C22C38/12 ,  C22C38/02 ,  C22C38/00

摘要： A high-frequency acceleration cavity core is a toroidal core obtained by winding an Fe-based magnetic ribbon having crystals with an average crystal grain size of 1 μm or less, in which a space factor of the Fe-based magnetic ribbon is 40% or more and 59% or less, and a μQf value at 1 MHz is 3×109 Hz or more. The average crystal grain size is preferably 0.1 μm or less. The toroidal core preferably has a portion having a gap portion from an inner diameter to an outer diameter.

公开(公告)号：US20210287833A1

公开(公告)日：2021-09-16

申请号：US17328139

申请日：2021-05-24

申请人： KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA MATERIALS CO., LTD.

发明人： Tadao SAITO ,  Takahiro MAEDA ,  Satoru HABU

IPC分类号： H01F1/153

摘要： A Co-based amorphous magnetic thin strip for a magnetic sensor is disclosed. The Co-based amorphous magnetic thin strip has a width W equal to or smaller than 1 mm, a length L between 6 mm and 100 mm inclusive, a ratio L/W between 20 and 1000 inclusive, a strip thickness t between 10 μm and 28 μm inclusive, and a cross section of a rectangle or a trapezoid.