公开(公告)号：US20150221858A1

公开(公告)日：2015-08-06

申请号：US14610321

申请日：2015-01-30

Applicant: TDK CORPORATION

Inventor： Taku MASAI ,  Masahito FURUKAWA ,  Hiroki KATOH

IPC: H01L41/187 ,  H01L41/18

CPC classification number: H01L41/1878 ,  C04B35/475 ,  C04B2235/3201 ,  C04B2235/3206 ,  C04B2235/3241 ,  C04B2235/3262 ,  C04B2235/327 ,  H01L41/0805 ,  H01L41/083 ,  H01L41/18 ,  H01L41/316

Abstract: The present invention aims to provide a piezoelectric composition and a piezoelectric element. In the piezoelectric composition, the main component is represented by the following formula with a perovskite type structure, (Bi(0.5x+y+z)Na0.5x)m(Ti(x+0.5y)Mg0.5yMez)O3 wherein, 0.05≦x≦0.7, 0.01≦y≦0.7, 0.01≦z≦0.6, 0.75≦m≦1.0, x+y+z=1 and the transition metal element Me is any one or more selected from the group consisting of Mn, Cr, Fe and Co.

Abstract translation: 本发明的目的在于提供一种压电组合物和压电元件。 在压电组合物中，主成分由钙钛矿型结构（Bi（0.5x + y + z）Na 0.5 x）m（Ti（x + 0.5y）Mg 0.5 y Me z）O 3表示，其中， 0.05和nlE; x和nlE; 0.7,0.01＆amp; nlE; y＆nlE; 0.7,0.01＆nlE; z＆nlE; 0.6,0.75＆amp; nlE; m＆nlE; 1.0，x + y + z = 1，过渡金属元素Me是选自 由Mn，Cr，Fe和Co组成

公开(公告)号：US20150249201A1

公开(公告)日：2015-09-03

申请号：US14633649

申请日：2015-02-27

Applicant: TDK CORPORATION

Inventor： Masahito FURUKAWA ,  Yoshikazu SHIMURA ,  Taku MASAI ,  Satoshi WADA

IPC: H01L41/18 ,  H01L41/083 ,  H01L41/187

CPC classification number: H01L41/1873 ,  H01L41/083 ,  H01L41/1871

Abstract: A composite piezoelectric ceramic includes a compact of crystal particles including at least one of potassium niobate (KNbO3) and sodium niobate (NaNbO3) and optionally further including lithium niobate (LiNbO3), and a layer containing barium titanate (BaTiO3) that is disposed on the surface of the compact while forming a heterojunction with the compact. A piezoelectric device includes the composite piezoelectric ceramic.

Abstract translation: 复合压电陶瓷包括包含铌酸钾（KNbO 3）和铌酸钠（NaNbO 3）中的至少一种并且任选地还包含铌酸锂（LiNbO 3）和含有钛酸钡（BaTiO 3）的层中的至少一种的晶体颗粒， 同时与压实体形成异质结。 压电装置包括复合压电陶瓷。

公开(公告)号：US20150353430A1

公开(公告)日：2015-12-10

申请号：US14762149

申请日：2014-03-24

Applicant: TDK CORPORATION

Inventor： Hidesada NATSUI ,  Taku MASAI ,  Sanshiro AMAN

IPC: C04B35/475 ,  H01L41/187

CPC classification number: C04B35/475 ,  C01G49/00 ,  C01G49/0036 ,  C01P2002/34 ,  C04B35/00 ,  C04B35/26 ,  C04B35/462 ,  C04B35/47 ,  C04B2235/3201 ,  C04B2235/3213 ,  C04B2235/3232 ,  C04B2235/3298 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/6562 ,  C04B2235/765 ,  C04B2235/768 ,  H01B3/12 ,  H01L41/187 ,  H01L41/1878 ,  H01L41/43

Abstract: A novel ceramic composition having a high relative dielectric constant. A ceramic composition includes a unit cell having at least two crystal structures selected from the group made of a monoclinic crystal, a tetragonal crystal, an orthorhombic crystal, and a rhombohedral crystal, characterized in that when the crystal structures are represented by the symmetry notation according to the Glazer method, namely xn1yn2zn3, n1, n2, and n3 are at least one selected from the group made of + and −, or at least two selected from the group made of 0, +, and −. By using this ceramic composition, a novel ceramic composition having a high relative dielectric constant can be obtained.

Abstract translation: 具有高相对介电常数的新型陶瓷组合物。 陶瓷组合物包括具有选自由单斜晶体，四方晶体，正交晶体和菱方晶构成的组中的至少两种晶体结构的晶胞，其特征在于，当晶体结构由对称符号表示时 对于Glazer方法，即，xn1yn2zn3，n1，n2和n3是从由+和 - 构成的组中选择的至少一个，或者选自由0，+和 - 组成的组中的至少两个。 通过使用该陶瓷组合物，可以获得具有高相对介电常数的新型陶瓷组合物。

公开(公告)号：US20150280105A1

公开(公告)日：2015-10-01

申请号：US14674466

申请日：2015-03-31

Applicant: TDK CORPORATION

Inventor： Yuko SAYA ,  Taku MASAI ,  Masahito FURUKAWA ,  Masamitsu HAEMORI

IPC: H01L41/187 ,  H01L41/083

CPC classification number: H01L41/1878 ,  B32B18/00 ,  C04B35/475 ,  C04B35/6261 ,  C04B35/62655 ,  C04B35/62675 ,  C04B35/638 ,  C04B2235/3201 ,  C04B2235/3206 ,  C04B2235/3217 ,  C04B2235/3232 ,  C04B2235/3272 ,  C04B2235/3298 ,  C04B2235/442 ,  C04B2235/449 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/768 ,  C04B2235/785 ,  C04B2235/786 ,  C04B2237/346 ,  C04B2237/68 ,  C04B2237/704 ,  C23C14/08 ,  H01L41/0805 ,  H01L41/083

Abstract: The present invention aims to provide a piezoelectric composition and a piezoelectric element containing the piezoelectric composition. In the piezoelectric composition, the main component contains a substance represented by the following formula with a perovskite structure, (Bi(0.5x+y+z)Na0.5x)m(Ti(x+0.5y)Mg0.5yAlkzCo(1−k)z)O3 0.15≦x≦0.7, 0.28≦y≦0.75, 0.02≦z≦0.30, 0.17≦k≦0.83, 0.75≦m≦1.0, and x+y+z=1.

Abstract translation: 本发明的目的在于提供一种压电组合物和含有压电组合物的压电元件。 在压电组合物中，主成分含有钙钛矿结构的下式表示的物质（Bi（0.5x + y + z）Na 0.5 x）m（Ti（x + 0.5y）Mg 0.5 y Al z z Co（1- k）z）O3 0.15＆nlE; x＆nlE; 0.7,0.28＆amp; nlE; y＆nlE; 0.75,0.02＆amp; nlE; z＆nlE; 0.30,0.17和nlE; k＆nlE; 0.83,0.75＆amp; nlE; m＆nlE; 1.0和x + y + z = 1。

公开(公告)号：US20160141486A1

公开(公告)日：2016-05-19

申请号：US14201515

申请日：2014-03-07

Applicant: TDK CORPORATION

Inventor： Taku MASAI ,  Masamitsu HAEMORI ,  Masahito FURUKAWA ,  Junichi YAMAZAKI ,  Kouhei OHHASHI

IPC: H01L41/187 ,  H01L41/08

CPC classification number: H01L41/1878 ,  C04B35/475 ,  H01L41/0805 ,  H01L41/316

Abstract: Provided is a piezoelectric composition containing a major component that is a perovskite-type oxide which is represented by the general formula ABO3, which contains no Pb, and which has A-sites containing Bi, Na, and K and B-sites containing Ti. The Ti is partly substituted with a transition metal element Me that is at least one selected from the group consisting of Mn, Cr, Fe, and Co. The content of Bi and the transition metal element Me in the perovskite-type oxide, which is the major component, is 6 mole percent to 43 mole percent in terms of Biu1MeO3.

Abstract translation: 本发明提供一种压电组合物，其含有主要成分为钙钛矿型氧化物，其由不含Pb的通式ABO3表示，具有含有Bi，Na，K的A位点和含有Ti的B位点。 Ti部分被选自Mn，Cr，Fe和Co中的至少一种的过渡金属元素Me所取代。钙钛矿型氧化物中Bi和过渡金属元素Me的含量为 主要组分按Biu1MeO3计为6摩尔％至43摩尔％。

公开(公告)号：US20140339962A1

公开(公告)日：2014-11-20

申请号：US13893865

申请日：2013-05-14

Applicant: TDK CORPORATION

Inventor： Masahito FURUKAWA ,  Tomohisa AZUMA ,  Taku MASAI

IPC: H01L41/047

CPC classification number: H01L41/0477 ,  H01L41/0815 ,  H01L41/1873 ,  H01L41/313

Abstract: A piezoelectric device includes a first electrode film, a piezoelectric film disposed on the first electrode film, and a second electrode film disposed on the piezoelectric film. At least one of the first and second electrode films is composed of an alloy, and a main component of the alloy is a metal selected from the group consisting of Ti, Al, Mg, and Zn. The piezoelectric film has a main composition represented by (K1-x-y-w-vNaxLiyBawSrv)m(Nb1-z-uTazZru)O3 (1), where x, y, z, w, v, u, and m in formula (1) satisfy 0.4

Abstract translation: 压电装置包括第一电极膜，设置在第一电极膜上的压电膜和设置在压电膜上的第二电极膜。 第一电极膜和第二电极膜中的至少一个由合金构成，合金的主要成分为选自Ti，Al，Mg，Zn的金属。 压电膜具有由（K1-xyw-vNaxLiyBawSrv）m（Nb1-z-uTazZru）O3（1）表示的主要组成，其中式（1）中的x，y，z，w，v，u和m满足 0.4

公开(公告)号：US20140339458A1

公开(公告)日：2014-11-20

申请号：US13893930

申请日：2013-05-14

Applicant: TDK CORPORATION

Inventor： Masahito FURUKAWA ,  Tomohisa AZUMA ,  Taku MASAI ,  Yasuhiro AIDA

IPC: H01L41/187

CPC classification number: H01L41/1873 ,  H01L41/43

Abstract: A piezoelectric ceramic contains a major proportion of potassium sodium niobate and has a carbon content after firing of 55 to 1,240 ppm by mass.

Abstract translation: 压电陶瓷含有主要比例的铌酸钾钠，烧成后的碳含量为55〜1,240质量ppm。

公开(公告)号：US20190300436A1

公开(公告)日：2019-10-03

申请号：US16357860

申请日：2019-03-19

Applicant: TDK CORPORATION

Inventor： Daisuke OHTSU ,  Taku MASAI ,  Liu HAILONG ,  Liang LIPING

IPC: C04B35/468 ,  C04B35/47 ,  C04B35/475

Abstract: The object of the present invention is to provide the dielectric composition having good specific permittivity, high DC breakdown voltage and AC breakdown voltage, small dielectric loss and heat generating property, and good temperature property even though lead is not substantially used. A dielectric composition of the first aspect includes a, Ca, Bi, Ti, and Sr, wherein the dielectric composition includes two phases having different Sr characteristic X ray intensities when a characteristic X ray intensity derived from Sr is measured by EPMA, and when Sr1 represents the characteristic X ray intensity derived from Sr of a first phase measured by EPMA and Sr2 represents the characteristic X ray intensity derived from Sr of a second phase measured by EPMA, a ratio (Sr2/Sr1) of Sr2 with respect to Sr1 satisfies 2 or larger. A dielectric composition of the second aspect includes Ba, Ca, Bi, Ti, and Sr, wherein the dielectric composition includes three phases having different Sr characteristic X ray intensities when a characteristic X ray intensity derived from Sr is measured by EPMA, and when Sr1 represents the characteristic X ray intensity derived from Sr of a first phase measured by EPMA, Sr2 represents the characteristic X ray intensity derived from Sr of a second phase measured by EPMA, and Sr3 represents the characteristic X ray intensity derived from Sr of a third phase measured by EPMA, an intensity ratio (Sr1/Sr3) of Sr1 with respect to Sr3 is 0.6 or less and an intensity ratio (Sr2/Sr3) of Sr2 with respect to Sr3 is 1.4 or more.

公开(公告)号：US20150129792A1

公开(公告)日：2015-05-14

申请号：US14535880

申请日：2014-11-07

Applicant: TDK Corporation

Inventor： Taku MASAI ,  Keisuke TERANISHI ,  Masahito FURUKAWA

IPC: H01L41/187

CPC classification number: H01L41/1878 ,  H01L41/0805 ,  H01L41/083 ,  H01L41/273 ,  H01L41/316

Abstract: The present invention aims to provide an excellent piezoelectric composition and an excellent piezoelectric element if the piezoelectric properties especially a high spontaneous polarization and a sufficiently high resistivity, the low pollution, the environment and the ecology are considered. In the piezoelectric composition, the main component contains the substance represented by the following formula with a perovskite-typed structure, (Bi(0.5x+y+z)Na0.5x)m(Tix+0.5yMg0.5yAlz)O3. Wherein, 0.01≦x≦0.8, 0.2≦y≦0.8, 0.01≦z≦0.6, 0.75≦m≦1.0, and x+y+z=1

Abstract translation: 本发明的目的在于提供一种优异的压电组合物和优异的压电元件，如果考虑压电性能，特别是高自发极化和足够高的电阻率，低污染，环境和生态学。 在压电组合物中，主要成分含有下列式表示的具有钙钛矿型结构的物质（Bi（0.5x + y + z）Na 0.5 x）m（Tix + 0.5yMg0.5yAlz）O 3。 其中，0.01＆nlE; x＆lt; l; 0.8,0.2＆nlE; y＆nlE; 0.8,0.01＆nlE; z＆nlE; 0.6,0.75＆amp; nlE; m＆nlE; 1.0和x + y + z = 1

公开(公告)号：US20130193367A1

公开(公告)日：2013-08-01

申请号：US13755354

申请日：2013-01-31

Applicant: TDK CORPORATION

Inventor： Taku MASAI ,  Masahito FURUKAWA

IPC: H01L41/187

CPC classification number: H01L41/1873 ,  C04B35/475 ,  C04B35/62675 ,  C04B2235/3201 ,  C04B2235/3241 ,  C04B2235/3262 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3298 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/768 ,  C04B2235/785 ,  C04B2235/786 ,  H01L41/187 ,  H01L41/316

Abstract: A piezoelectric compound having no occurrence of segregation or uneven structures as well as a piezoelectric element having excellent piezoelectric properties. The piezoelectric composition includes a main component that is a perovskite-typed oxide represented by formula of ABO3, wherein, one site includes Bi, Na, and another site includes Ti, and part of the Ti is substituted by transition metal element Me (Me is at least one element selected from the group consisting of Mn, Cr, Fe and Co), according to the conversion of BiMeO3, the content ratio of Bi and the transition metal element Me accounts for 6˜43 mol % relative to the whole perovskite-typed oxides as the main component.

Abstract translation: 不产生偏析或不均匀结构的压电化合物以及压电性能优异的压电元件。 压电组合物包括主要成分，其为由ABO 3的式表示的钙钛矿型氧化物，其中，一个位点包含Bi，Na，另一个位置包括Ti，并且部分Ti被过渡金属元素Me取代（Me是 选自Mn，Cr，Fe和Co中的至少一种元素），根据BiMeO3的转化率，Bi和过渡金属元素Me的含量比相对于整个钙钛矿结构为6〜43摩尔％ 以氧化物为主要成分。