公开(公告)号：US20230386720A1

公开(公告)日：2023-11-30

申请号：US18324609

申请日：2023-05-26

Applicant: TDK CORPORATION

Inventor： Hajime AMANO ,  Kensuke ARA ,  Kazuhiro YOSHIDOME ,  Akito HASEGAWA

IPC: H01F10/00 ,  H01F10/13

CPC classification number: H01F10/007 ,  H01F10/131 ,  H01F10/132

Abstract: An inductor includes a magnetic core portion and a coil portion. The magnetic core portion is a multilayer film in which a nanogranular magnetic film and a soft magnetic alloy film are alternately stacked. The nanogranular magnetic film has a structure in which nano-domains of a first phase are dispersed in a second phase. The first phase contains one or more selected from Fe and Co, and the second phase contains one or more selected from O, N, and F. The volume ratio of the first phase to the total volume of the first phase and the second phase is 60% or less. The soft magnetic alloy film contains one or more selected from Fe and Co. The total amount of Fe, Co, and Ni in the soft magnetic alloy film is 70 at % or more.

公开(公告)号：US20190221341A1

公开(公告)日：2019-07-18

申请号：US16234941

申请日：2018-12-28

Applicant: TDK CORPORATION

Inventor： Kazuhiro YOSHIDOME ,  Akihiro HARADA ,  Hiroyuki MATSUMOTO ,  Kenji HORINO ,  Akito HASEGAWA ,  Kensuke ARA ,  Hajime AMANO ,  Masakazu HOSONO

IPC: H01F1/153 ,  C22C38/00

CPC classification number: H01F1/15325 ,  B22F9/082 ,  B22F2301/355 ,  C22C38/00 ,  C22C38/002 ,  C22C38/005 ,  C22C45/02 ,  C22C2202/02 ,  H01F1/153 ,  H01F1/15308 ,  H01F1/15333 ,  H01F41/02 ,  H01F41/0226 ,  H01F41/0246

Abstract: A soft magnetic alloy includes a main component of (Fe(1-(α+β))X1αX2β)(1-(a+b+c+d+e+f+g))MaBbPcSidCeSfTig. X1 is one or more of Co and Ni. X2 is one or more of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements. M is one or more of Nb, Hf, Zr, Ta, Mo, W, and V. 0.020≤a≤0.14 is satisfied. 0.020

公开(公告)号：US20180218810A1

公开(公告)日：2018-08-02

申请号：US15880920

申请日：2018-01-26

Applicant: TDK CORPORATION

Inventor： Akihiro HARADA ,  Hiroyuki MATSUMOTO ,  Kenji HORINO ,  Kazuhiro YOSHIDOME ,  Akito HASEGAWA ,  Hajime AMANO ,  Kensuke ARA ,  Seigo TOKORO ,  Shota OTSUKA

IPC: H01F1/153 ,  H01F27/255 ,  H01F27/28 ,  H01F41/02 ,  H01F41/06

CPC classification number: H01F1/15308 ,  B22F1/0018 ,  B22F9/082 ,  B22F2009/0828 ,  C22C33/003 ,  C22C38/002 ,  C22C38/004 ,  C22C38/005 ,  C22C38/007 ,  C22C38/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/32 ,  C22C38/60 ,  C22C45/02 ,  H01F1/15333 ,  H01F27/255 ,  H01F27/2823 ,  H01F41/0226 ,  H01F41/0246 ,  H01F41/06

Abstract: A soft magnetic alloy including a main component having a compositional formula of (Fe(1−(α+β))X1αX2β)(1−(a+b+c))MaBbPc, and a sub component including at least C, S and Ti, wherein X1 is one or more selected from the group including Co and Ni, X2 is one or more selected from the group including Al, Mn, Ag, Zn, Sn, As, Sb, Bi, and rare earth elements, “M” is one or more selected from the group including Nb, Hf, Zr, Ta, Mo, W, and V, 0.020≤a≤0.14, 0.020≤b≤0.20, 0≤c≤0.040, α≥0, β≥0, and 0≤α+β≤0.50 are satisfied, when entire said soft magnetic alloy is 100 wt %, a content of said C is 0.001 to 0.050 wt %, a content of said S is 0.001 to 0.050 wt %, and a content of said Ti is 0.001 to 0.080 wt %, and when a value obtained by dividing the content of said C by the content of said S is C/S, then C/S satisfies 0.10≤C/S≤10.

公开(公告)号：US20180122542A1

公开(公告)日：2018-05-03

申请号：US15794566

申请日：2017-10-26

Applicant: TDK CORPORATION

Inventor： Hiroyuki MATSUMOTO ,  Kenji HORINO ,  Kazuhiro YOSHIDOME ,  Akihiro HARADA ,  Akito HASEGAWA ,  Hajime AMANO ,  Kensuke ARA ,  Masahito KOEDA ,  Seigo TOKORO

IPC: H01F1/153 ,  C22C38/00 ,  C22C38/32 ,  C22C38/28 ,  C22C45/00

CPC classification number: H01F1/15333 ,  B22D11/0611 ,  B82Y30/00 ,  C21D2201/03 ,  C22C33/003 ,  C22C38/002 ,  C22C38/004 ,  C22C38/005 ,  C22C38/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/30 ,  C22C38/32 ,  C22C38/48 ,  C22C38/54 ,  C22C45/008 ,  C22C45/02 ,  H01F1/15308 ,  H01F1/15341

Abstract: A soft magnetic alloy including a composition having a formula of ((Fe(1-(α+β))X1αX2β)(1-(a+b+c+d+e))MaBbPcCrdCue)1-fCf. X1 is one or more elements selected from a group of Co and Ni. X2 is one or more elements selected from a group of W, Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, O, and rare earth elements. M is one or more elements selected from a group of Nb, Hf, Zr, Ta, Ti, Mo, and V. 0.030≤a≤0.14, 0.028≤b≤0.20, 0

公开(公告)号：US20230245809A1

公开(公告)日：2023-08-03

申请号：US18159390

申请日：2023-01-25

Applicant: TDK CORPORATION

Inventor： Hajime AMANO ,  Kensuke ARA ,  Kazuhiro YOSHIDOME ,  Risako TSURUMARU

IPC: H01F10/00 ,  H01F10/14 ,  H01F10/16

CPC classification number: H01F10/007 ,  H01F10/14 ,  H01F10/16

Abstract: A nanogranular magnetic film includes a structure including first phases comprised of nano-domains dispersed in a second phase. The first phases include at least one selected from the group consisting of Fe, Co, and Ni. The second phase includes at least one selected from the group consisting of O, N, and F. A ratio of a volume of the first phases to a total volume of the first phases and the second phase is 65% or less. A noble gas element is included at 0.20 at % or more and 0.80 at % or less.

公开(公告)号：US20200082964A1

公开(公告)日：2020-03-12

申请号：US16494791

申请日：2018-03-30

Applicant: TDK CORPORATION

Inventor： Takeshi SAKAMOTO ,  Yoshihiro SHINKAI ,  Yu YONEZAWA ,  Hideharu MORO ,  Kensuke ARA ,  Tohru OIKAWA ,  Isao KANADA ,  Kenji HORINO ,  Kyung-Ku CHOI

IPC: H01F1/33 ,  H01F1/24 ,  H01F27/255 ,  H01F17/04 ,  H01F17/00

Abstract: A composite magnetic body with high permeability and low magnetic loss in a high-frequency region of a gigahertz band; and a high-frequency electronic component using the same, the electronic component being compact and having low-insertion loss. This composite magnetic body has a high permeability and a low magnetic loss especially in a high-frequency region of a gigahertz band, and is provided with: a plurality of magnetic nanowires 361-363 aligned so as not to cross each other; and insulators 365-367 that electrically insulate the plurality of magnetic nanowires 361-363.

公开(公告)号：US20190214171A1

公开(公告)日：2019-07-11

申请号：US16221977

申请日：2018-12-17

Applicant: TDK CORPORATION

Inventor： Kazuhiro YOSHIDOME ,  Hiroyuki MATSUMOTO ,  Kenji HORINO ,  Akito HASEGAWA ,  Hajime AMANO ,  Kensuke ARA ,  Akihiro HARADA

IPC: H01F1/26 ,  H01F1/147 ,  H01F1/38

CPC classification number: H01F1/26 ,  H01F1/14708 ,  H01F1/14766 ,  H01F1/15308 ,  H01F1/15333 ,  H01F1/38 ,  H01F41/0226 ,  H01F41/0246

Abstract: A soft magnetic alloy which includes nanocrystal parts and amorphous parts is provided. The nanocrystal parts include αFe(—Si) as a main component, and include at least one of elements selected from B, P, C, Ti, Zr, Hf, Nb, Ta, Mo, V, W, Cr, Al, Mn, Zn, and Cu as a sub-component. When a total content ratio of the sub-component in the nanocrystal parts is set as α (at %), and a total content ratio of the sub-components of the nanocrystal parts included in the amorphous parts is set as β (at %), 0.01≤(α/β)≤0.40, and a crystallinity degree is 5% or more and 70% or less.

公开(公告)号：US20190108931A1

公开(公告)日：2019-04-11

申请号：US16146268

申请日：2018-09-28

Applicant: TDK CORPORATION

Inventor： Akihiro HARADA ,  Hiroyuki MATSUMOTO ,  Kenji HORINO ,  Kazuhiro YOSHIDOME ,  Akito HASEGAWA ,  Hajime AMANO ,  Kensuke ARA ,  Seigo TOKORO ,  Masakazu HOSONO ,  Takuma NAKANO ,  Satoko MORI

IPC: H01F1/147 ,  C22C38/14 ,  C22C38/04 ,  C22C38/06 ,  C22C38/00 ,  C22C38/12

Abstract: A soft magnetic alloy contains a main component having a composition formula of (Fe(1−(α−β))X1αX2β)1−(a+b+c+d))MaBbPcCd and auxiliary components including at least Ti, Mn and Al. In the composition formula, X1 is one or more selected from the group consisting of Co and Ni, X2 is one or more selected from the group consisting of Ag, Zn, Sn, As, Sb, Bi and a rare earth element, and M is one or more selected from the group consisting of Nb, Hf, Zr, Ta, Mo, W and V. In the composition formula, 0.030≤a≤0.100, 0.050≤b≤0.150, 0≤c≤0.030, 0≤d≤0.030, α≥0, β≥0, and 0≤α+β≤0.50 are satisfied. In the soft magnetic alloy, a content of Ti is 0.001 to 0.100 wt %, a content of Mn is 0.001 to 0.150 wt %, and a content of Al is 0.001 to 0.100 wt %.

公开(公告)号：US20180218812A1

公开(公告)日：2018-08-02

申请号：US15881118

申请日：2018-01-26

Applicant: TDK CORPORATION

Inventor： Akihiro HARADA ,  Hiroyuki MATSUMOTO ,  Kenji HORINO ,  Kazuhiro YOSHIDOME ,  Akito HASEGAWA ,  Hajime AMANO ,  Kensuke ARA ,  Seigo TOKORO ,  Shota OTSUKA

IPC: H01F1/153 ,  C22C45/02 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/00

CPC classification number: H01F1/15325 ,  C22C38/002 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C45/00 ,  C22C45/02 ,  C22C2200/02 ,  C22C2200/04 ,  C22C2202/02 ,  H01F1/15308 ,  H01F1/15333

Abstract: A soft magnetic alloy including a compositional formula of ((Fe(1−(α+β))X1αX2β)(1−(a+b+c+e))MaBbPcCue)1−fCf, wherein X1 is one or more selected from the group consisting Co and Ni, X2 is one or more selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, O, and rare earth elements, “M” is one or more selected from the group consisting of Nb, Hf, Zr, Ta, Ti, Mo, W, and V, 0.030

公开(公告)号：US20180122540A1

公开(公告)日：2018-05-03

申请号：US15794836

申请日：2017-10-26

Applicant: TDK CORPORATION

Inventor： Hiroyuki MATSUMOTO ,  Kenji HORINO ,  Kazuhiro YOSHIDOME ,  Akihiro HARADA ,  Akito HASEGAWA ,  Hajime AMANO ,  Kensuke ARA ,  Masahito KOEDA ,  Seigo TOKORO

IPC: H01F1/055 ,  C22C38/26 ,  C22C38/16 ,  C22C38/14 ,  C22C38/32 ,  C22C38/00 ,  B22D23/00

CPC classification number: H01F1/0551 ,  B22D23/003 ,  B22F2998/10 ,  B22F2999/00 ,  B82Y30/00 ,  C22C33/02 ,  C22C38/00 ,  C22C38/002 ,  C22C38/005 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/26 ,  C22C38/32 ,  C22C45/02 ,  C22C2200/02 ,  C22C2202/02 ,  H01F1/0556 ,  H01F1/15308 ,  H01F1/15333 ,  B22F9/082 ,  B22F3/02 ,  B22F3/10 ,  B22F2202/05

Abstract: A soft magnetic alloy including a composition having a formula of ((Fe(1-(α+β))X1αX2β)(1-(a+b+c+d+e))MaBbPcCrdCue)1-fCf. X1 is one or more elements selected from a group of Co and Ni. X2 is one or more elements selected from a group of W, Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, O, and rare earth elements. M is one or more elements selected from a group of Nb, Hf, Zr, Ta, Ti, Mo, and V. 0.020≤a≤0.060, 0.020≤b≤0.060, 0≤c≤0.030, 0≤d≤0.050, 0≤e≤0.030, 0