公开(公告)号：US20190103222A1

公开(公告)日：2019-04-04

申请号：US16088007

申请日：2017-03-06

Applicant: TDK CORPORATION

Inventor： Sanshiro AMAN ,  Hiroki AKIBA ,  Keiko TAKEUCHI

IPC: H01G4/12 ,  C04B35/01 ,  H01B3/12

Abstract: A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition. The dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (Sr1.00−s−tBasCat)6.00−xRx(Ti1.00−aZra)x+2.00(Nb1.00−bTab)8.00−xO30.00 in which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.50≤s≤1.00, 0≤t≤0.50, 0.50≤s+t≤1.00, 0.50

公开(公告)号：US20240105388A1

公开(公告)日：2024-03-28

申请号：US18469157

申请日：2023-09-18

Applicant: TDK CORPORATION

Inventor： Hiroki AKIBA ,  Tetsuhiro TAKAHASHI ,  Toshihiro IGUCHI

IPC: H01G4/12 ,  C01G35/00 ,  H01G4/30

CPC classification number: H01G4/1263 ,  C01G35/006 ,  H01G4/30 ,  C01P2002/52 ,  C01P2006/40

Abstract: A dielectric composition including a tungsten bronze type composite oxide as a main component represented by (Ba1-xSrx)aRbZrcTadO30+0.5e in terms of an atomic ratio. In the dielectric composition, c=(2a+3b−10)−e and d=(20−2a−3b)+e are satisfied. R includes at least one selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, and Sc. In the dielectric composition, 0.000≤x≤0.500, 5.100≤a≤5.860, 0.000≤b≤0.100, and −0.150≤e≤0.150 are satisfied.

公开(公告)号：US20190112235A1

公开(公告)日：2019-04-18

申请号：US16087856

申请日：2017-03-06

Applicant: TDK CORPORATION

Inventor： Hiroki AKIBA ,  Sanshiro AMAN ,  Keiko TAKEUCHI

IPC: C04B35/495 ,  C04B35/626 ,  H01B3/12 ,  H01G4/12 ,  H01G4/30

Abstract: A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the composition, the composition containing a tungsten bronze type composite oxide represented by chemical formula (Sr1.00-(s+t)BasCat)6.00-xRx(Ti1.00-(a+d)ZraSid)x−2.00(Nb1.00-bTab)8.00-xO30.00, wherein R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, b, and d satisfy 0≤s≤1.00, 0≤t≤1.00, 0≤s+t≤1.00, 0≤x≤3.00, 0.01≤a≤0.98, 0≤b≤1.00, 0.02≤d≤0.15, and 0.03≤a+d≤1.00. At least one element selected from Mn, Mg, Co, V, W, Mo, Li, B, and Al are contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.

公开(公告)号：US20230145549A1

公开(公告)日：2023-05-11

申请号：US17951305

申请日：2022-09-23

Applicant: TDK Corporation

Inventor： Toshihiro IGUCHI ,  Tetsuhiro TAKAHASHI ,  Hiroki AKIBA ,  Ryota NOMURA

IPC: H01G4/12

CPC classification number: H01G4/1254

Abstract: A dielectric composition includes a main component containing tantalum and at least one of barium or strontium, and a subcomponent containing calcium and silicon.

公开(公告)号：US20220230776A1

公开(公告)日：2022-07-21

申请号：US17557824

申请日：2021-12-21

Applicant: TDK CORPORATION

Inventor： Toshihiro IGUCHI ,  Tetsuhiro TAKAHASHI ,  Hiroki AKIBA ,  Ryota NOMURA

IPC: H01B3/12 ,  H01G4/12 ,  C04B35/495

Abstract: In order to provide a dielectric composition having high relative permittivity at a wide range of temperatures, the main component of a dielectric composition includes strontium and tantalum.

公开(公告)号：US20190256425A1

公开(公告)日：2019-08-22

申请号：US16087884

申请日：2017-03-06

Applicant: TDK CORPORATION

Inventor： Hiroki AKIBA ,  Sanshiro AMAN ,  Keiko TAKEUCHI

IPC: C04B35/495 ,  C04B35/626 ,  C04B35/64 ,  H01G4/30 ,  H01G4/12

Abstract: A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition. The dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (Sr1.00-(s+t)BasCat)6.00-xRx(Ti1.00-aZra)x+2.00(Nb1.00-bTab)8.00-xO30.00, in which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.50≤s≤1.00, 0≤t≤0.30, 0.50≤s+t≤1.00, 1.50

公开(公告)号：US20230085744A1

公开(公告)日：2023-03-23

申请号：US17945593

申请日：2022-09-15

Applicant: TDK CORPORATION

Inventor： Tetsuhiro TAKAHASHI ,  Toshihiro IGUCHI ,  Hiroki AKIBA ,  Ryota NOMURA

IPC: C04B35/495 ,  C04B35/626 ,  C04B35/64 ,  C04B35/634 ,  C04B35/638 ,  H01G4/12

Abstract: Provided is a dielectric composition containing: a main component expressed by {BaxSr(1-x)}mTa4O12; and a first subcomponent, m satisfying a relationship of 1.95≤m≤2.40. The first subcomponent includes silicon and manganese. When the amount of the main component contained in the dielectric composition is set to 100 parts by mole, the amount of silicon contained in the dielectric composition is 5.0 to 20.0 parts by mole in terms of SiO2, and the amount of manganese contained in the dielectric composition is 1.0 to 4.5 parts by mole in terms of MnO.

公开(公告)号：US20220227673A1

公开(公告)日：2022-07-21

申请号：US17558077

申请日：2021-12-21

Applicant: TDK CORPORATION

Inventor： Toshihiro IGUCHI ,  Tetsuhiro TAKAHASHI ,  Hiroki AKIBA ,  Ryota NOMURA

IPC: C04B35/495 ,  H01G4/12

Abstract: In order to provide a dielectric composition having high density even when fired at a relatively low temperature, the main component of a dielectric composition includes tantalum and at least one of barium or strontium, and the subcomponent of the dielectric composition includes at least one element selected from the group consisting of vanadium, titanium, and aluminum.

公开(公告)号：US20190115154A1

公开(公告)日：2019-04-18

申请号：US16087790

申请日：2017-03-06

Applicant: TDK CORPORATION

Inventor： Sanshiro AMAN ,  Hiroki AKIBA ,  Keiko TAKEUCHI

IPC: H01G4/12 ,  H01G4/30 ,  C04B35/495 ,  C04B35/626

Abstract: A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition. A dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (Sr1.00−s−tBasCat)6.00−xRx(Ti1.00−aZra)x+2.00(Nb1.00−bTab)8.00−xO30.00, in which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.70≤s≤1.00, 0≤t≤0.30, 0.70≤s+t≤1.00, 0≤x≤0.50, 0.10≤a≤1.00, and 0≤b≤1.00. At least one or more elements selected from Mn, Mg, Co, V, W, Mo, Si, Li, B, and Al arc contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.

公开(公告)号：US20180240594A1

公开(公告)日：2018-08-23

申请号：US15900084

申请日：2018-02-20

Applicant: TDK CORPORATION

Inventor： Ryota NOMURA ,  Hiroki AKIBA ,  Sanshiro AMAN ,  Tetsuhiro TAKAHASHI

IPC: H01G4/12 ,  H01G4/30 ,  H01G4/008 ,  H01G4/012 ,  C04B35/49 ,  C04B35/495

CPC classification number: H01G4/1227 ,  C04B35/465 ,  C04B35/4686 ,  C04B35/47 ,  C04B35/49 ,  C04B35/495 ,  C04B35/6261 ,  C04B35/6262 ,  C04B35/638 ,  C04B35/64 ,  C04B2235/3203 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3232 ,  C04B2235/3239 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3256 ,  C04B2235/3258 ,  C04B2235/3262 ,  C04B2235/3287 ,  C04B2235/3409 ,  C04B2235/3418 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6567 ,  C04B2235/6582 ,  H01G4/008 ,  H01G4/012 ,  H01G4/1236 ,  H01G4/1254 ,  H01G4/1263 ,  H01G4/30

Abstract: A dielectric composition comprising a main component expressed by a chemical formula of (A6-xBxCx+2D8-xO30, 0≤x≤5), wherein said “A” component is at least one element selected form the group consisting of Ba, Ca, and Sr, said “B” component is at least one element selected from the group consisting of Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, said “C” component is at least one element selected from the group consisting of Ti, and Zr, said “D” component is at least one element selected from the group consisting of Nb, and Ta, and said dielectric composition comprises 2.50 mol or more and 20.00 mol or less of an oxide of Ge as a first sub component with respect to 100 mol of said main component.