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    Bismuth ruthenium M-type hexaferrite
    1.
    发明授权
    Bismuth ruthenium M-type hexaferrite 有权

    公开(公告)号：US11827527B2

    公开(公告)日：2023-11-28

    申请号：US17029733

    申请日：2020-09-23

    申请人： ROGERS CORPORATION

    发明人： Yajie Chen ,  Qifan Li

    IPC分类号： C01G49/00 ,  H05B6/72

    CPC分类号： C01G49/0036 ,  H05B6/72

    摘要： In an aspect, a ferrite composition comprises a BiRuCo-M-type ferrite having the formula Me1-xBixCoyRuzFe12-tO19, wherein Me is at least one of Sr, Pb, or Ba; x is 0.01 to 0.5; y is 0.1 to 2; z is 0 to 4, and t is 0 to 4; wherein the Co can be at least partially replaced by at least one of Zn, Cu, or Mg by an amount of less than y, and the Ru can be at least partially replaced by at least one of Ti, Sn, or Zr, where the substitution amount is not more than z or is less than z.

    High frequency magnetic films, method of manufacture, and uses thereof
    3.
    发明授权
    High frequency magnetic films, method of manufacture, and uses thereof 有权

    公开(公告)号：US11682509B2

    公开(公告)日：2023-06-20

    申请号：US16676736

    申请日：2019-11-07

    申请人： ROGERS CORPORATION

    发明人： Yajie Chen ,  Xiaoyu Zhang ,  Li Zhang ,  Yuanyuan Xing

    IPC分类号： H01F1/16 ,  H01F1/38 ,  H01F41/18 ,  H01F41/32

    CPC分类号： H01F1/16 ,  H01F1/38 ,  H01F41/18 ,  H01F41/32 ,  Y10T428/32

    摘要： A multilayer film includes a substrate; a first magnetic layer disposed on the substrate and a second magnetic layer disposed on the first magnetic layer. The first magnetic layer includes Fe(50-80)N(10-20)B(1-20)M(0-10), wherein M is Si, Ta, Zr, Ti, Co, or a combination thereof. The second magnetic layer includes Fe(50-90)N(10-50) or Fe(60-90)N(1-10)Ta(5-30). The multilayer magnetic film has, over a frequency range of 50 MHz to 10 GHz, a magnetic permeability of greater than or equal to 1800 over a selected frequency band in the frequency range; a magnetic loss tangent of less than or equal to 0.3 over a selected frequency band in the frequency range; and a cutoff frequency of greater than or equal to 1 GHz, or greater than or equal to 2 GHz.

    LOW LOSS MAGNETODIELECTRIC MATERIAL
    4.
    发明申请
    LOW LOSS MAGNETODIELECTRIC MATERIAL 有权

    公开(公告)号：US20220367093A1

    公开(公告)日：2022-11-17

    申请号：US17741746

    申请日：2022-05-11

    申请人： ROGERS CORPORATION

    发明人： Yajie Chen ,  Lance Young ,  Qifan Li ,  Megan Hott

    IPC分类号： H01F1/34 ,  C04B35/26 ,  C04B35/626 ,  C04B35/64 ,  C08K3/22

    摘要： In an aspect, a Co2Z-type ferrite comprises oxides of at least Me, Co, Mo, Li, and Fe; wherein Me is at least one of Ba or Sr. In another aspect, the Co2Z-type ferrite comprises a Z-type hexaferrite an amount of lithium molybdate. In another aspect, the Co2Z-type ferrite has a formula Li2MoO4.BaxSr3-xCo2+y−zMe′yMe″zFe24-2y-mO41, wherein Me′ is at least one of Ti, Mo, Ru, Ir, Zr, or Sn; Me″ is at least one of Zn, Mn, or Mg; x is 0 to 3; y is 0 to 1.8; z is 0 to 1.8; and m is −4 to 4. In yet another aspect, a method of making a Co2Z-type ferrite comprises milling an initial Co2Z-type ferrite and Li2MoO4 to form a mixed ferrite; and calcining the mixed ferrite to form the Co2Z-type ferrite.

    MULTIPHASE FERRITES AND COMPOSITES COMPRISING THE SAME
    5.
    发明申请
    MULTIPHASE FERRITES AND COMPOSITES COMPRISING THE SAME 有权

    公开(公告)号：US20210032121A1

    公开(公告)日：2021-02-04

    申请号：US16938396

    申请日：2020-07-24

    申请人： ROGERS CORPORATION

    发明人： Qifan Li ,  Yajie Chen

    IPC分类号： C01G49/00 ,  C08L27/12 ,  C08L23/00 ,  C08L61/16 ,  C08L81/02 ,  H01F1/34

    摘要： In an aspect, a multiphase ferrite comprises a Co2W phase that is optionally doped with Ru; a CFO phase having the formula Mer“Co1−rFe2+zO4, wherein Me” is at least one of Ni, Zn, or Mg, r is 0 to 0.5, and z is −0.5 to 6 0.5; and a CoRu-BaM phase having the formula BaCox+yRuyFe12−(2/3)x−2yO19, wherein x is 0 to 2, y is 0.01 to 2; and the Ba can be partially replaced by at least one of Sr or Ca. In another aspect, a composite can comprise a polymer and the multiphase ferrite. In yet another aspect, a method of making a multiphase ferrite can comprise mixing and grinding a CoRu-BaM phase ferrite and a CFO phase ferrite to form a mixture; and sintering the mixture in an oxygen atmosphere to form the multiphase ferrite.

    Magnetic particles, methods of making, and uses thereof
    8.
    发明授权
    Magnetic particles, methods of making, and uses thereof 有权

    公开(公告)号：US11476022B2

    公开(公告)日：2022-10-18

    申请号：US17000610

    申请日：2020-08-24

    申请人： ROGERS CORPORATION

    发明人： Li Zhang ,  Yajie Chen

    IPC分类号： H01F1/34 ,  C09C1/24 ,  C08K9/02 ,  C08K3/22 ,  C23C18/34

    摘要： In an aspect, a composition comprises a plurality of magnetic particles. The magnetic particles each independently comprise a nickel ferrite core having the formula Ni1−xMxPe2+yO4, wherein M is at least one of Zn, Mg, Co, Cu, Al, Mn, or Cr; x is 0 to 0.95, and y=−0.5 to 0.5; and an iron nickel shell at least partially surrounding the core, wherein the iron nickel shell comprises iron, nickel, and optionally M. In another aspect, a method of forming the magnetic particles comprises heat treating a plurality of nickel ferrite particles in a hydrogen atmosphere to form the plurality of magnetic particles having the iron nickel shell on the nickel ferrite core. In yet another aspect, a composite can comprise the magnetic particles and a polymer.

    BISMUTH RUTHENIUM M-TYPE HEXAFERRITE
    9.
    发明申请
    BISMUTH RUTHENIUM M-TYPE HEXAFERRITE 有权

    公开(公告)号：US20210179442A1

    公开(公告)日：2021-06-17

    申请号：US17029733

    申请日：2020-09-23

    申请人： ROGERS CORPORATION

    发明人： Yajie Chen ,  Qifan Li

    IPC分类号： C01G49/00 ,  H05B6/72

    摘要： In an aspect, a ferrite composition comprises a BiRuCo-M-type ferrite having the formula Me1-xBixCoyRuzFe12-tO19, wherein Me is at least one of Sr, Pb, or Ba; x is 0.01 to 0.5; y is 0.1 to 2; z is 0 to 4, and t is 0 to 4; wherein the Co can be at least partially replaced by at least one of Zn, Cu, or Mg by an amount of less than y, and the Ru can be at least partially replaced by at least one of Ti, Sn, or Zr, where the substitution amount is not more than z or is less than z.

    MAGNETIC PARTICLES, METHODS OF MAKING, AND USES THEREOF
    10.
    发明申请
    MAGNETIC PARTICLES, METHODS OF MAKING, AND USES THEREOF 有权

    公开(公告)号：US20210065943A1

    公开(公告)日：2021-03-04

    申请号：US17000610

    申请日：2020-08-24

    申请人： ROGERS CORPORATION

    发明人： Li Zhang ,  Yajie Chen

    IPC分类号： H01F1/34 ,  C09C1/24 ,  C08K9/02 ,  C08K3/22

    摘要： In an aspect, a composition comprises a plurality of magnetic particles. The magnetic particles each independently comprise a nickel ferrite core having the formula Ni1−xMxPe2+yO4, wherein M is at least one of Zn, Mg, Co, Cu, Al, Mn, or Cr; x is 0 to 0.95, and y=−0.5 to 0.5; and an iron nickel shell at least partially surrounding the core, wherein the iron nickel shell comprises iron, nickel, and optionally M. In another aspect, a method of forming the magnetic particles comprises heat treating a plurality of nickel ferrite particles in a hydrogen atmosphere to form the plurality of magnetic particles having the iron nickel shell on the nickel ferrite core. In yet another aspect, a composite can comprise the magnetic particles and a polymer.