公开(公告)号：US07567021B2

公开(公告)日：2009-07-28

申请号：US11850710

申请日：2007-09-06

申请人： Ritsu Tanaka ,  Hirofumi Yamaguchi ,  Yukinobu Yura ,  Shuichi Ozawa

发明人： Ritsu Tanaka ,  Hirofumi Yamaguchi ,  Yukinobu Yura ,  Shuichi Ozawa

IPC分类号： H01L41/08

CPC分类号： H01L41/094 ,  H01L41/1873 ,  H01L41/257 ,  H01L41/314 ,  Y10T29/42

摘要： A monomorph type piezoelectric/electrostrictive device includes a piezoelectric/electrostrictive body, which is composed of a non-lead based piezoelectric/electrostrictive crystalline body containing at least Nb, Ta, and one or more types of alkali metal element, which has a cubic crystal structure at a temperature higher than the phase transition point and at least any one of tetragonal and orthorhombic crystal structures at a temperature lower than the phase transition point, and which is curved to a large extent by a polarization treatment to take on a curved shape at a temperature lower than the phase transition point without application of a voltage after the polarization treatment. In the polarization treatment, an electric field is increased at a speed of from 0.1 (kV/mm)/sec or more to 5 (kV/mm)/sec or less, with applying the maximum electric field of from 2 kV/mm or more to 1.0 kV/mm or less.

摘要翻译： 单晶型压电/电致伸缩器件包括压电/电致伸缩体，其由至少含有Nb，Ta和一种或多种碱金属元素的非铅基压电/电致伸缩晶体组成，所述碱金属元素具有立方晶体 在低于相变温度的温度下高于相变温度的晶体结构中的至少任一种，并且在相对于相变温度低的温度下至少具有四方晶体和正交晶体结构，并且通过极化处理在很大程度上弯曲以呈现弯曲形状 在极化处理后不施加电压的温度低于相变点。 在极化处理中，通过施加2kV / mm以下的最大电场，以0.1（kV / mm）/ sec以上的速度将电场增加至5（kV / mm）/ sec以下， 多达1.0kV / mm以下。

公开(公告)号：US20080074007A1

公开(公告)日：2008-03-27

申请号：US11850710

申请日：2007-09-06

申请人： Ritsu Tanaka ,  Hirofumi Yamaguchi ,  Yukinobu Yura ,  Shuichi Ozawa

发明人： Ritsu Tanaka ,  Hirofumi Yamaguchi ,  Yukinobu Yura ,  Shuichi Ozawa

IPC分类号： H01L41/18 ,  H01L41/22

CPC分类号： H01L41/094 ,  H01L41/1873 ,  H01L41/257 ,  H01L41/314 ,  Y10T29/42

摘要： A monomorph type piezoelectric/electrostrictive device includes a piezoelectric/electrostrictive body, which is composed of a non-lead based piezoelectric/electrostrictive crystalline body containing at least Nb, Ta, and one or more types of alkali metal element, which has a cubic crystal structure at a temperature higher than the phase transition point and at least any one of tetragonal and orthorhombic crystal structures at a temperature lower than the phase transition point, and which is curved to a large extent by a polarization treatment to take on a curved shape at a temperature lower than the phase transition point without application of a voltage after the polarization treatment. In the polarization treatment, an electric field is increased at a speed of from 0.1 (kV/mm)/sec or more to 5 (kV/mm)/sec or less, with applying the maximum electric field of from 2 kV/mm or more to 1.0 kV/mm or less.

摘要翻译： 单晶型压电/电致伸缩器件包括压电/电致伸缩体，其由至少含有Nb，Ta和一种或多种碱金属元素的非铅基压电/电致伸缩晶体组成，所述碱金属元素具有立方晶体 在低于相变温度的温度下高于相变温度的晶体结构中的至少任一种，并且在相对于相变温度低的温度下至少具有四方晶体和正交晶体结构，并且通过极化处理在很大程度上弯曲以呈现弯曲形状 在极化处理后不施加电压的温度低于相变点。 在极化处理中，通过施加2kV / mm以下的最大电场，以0.1（kV / mm）/ sec以上的速度将电场增加至5（kV / mm）/ sec以下， 多达1.0kV / mm以下。

公开(公告)号：US20080302996A1

公开(公告)日：2008-12-11

申请号：US12036373

申请日：2008-02-25

申请人： Yukinobu Yura ,  Hirofumi Yamaguchi ,  Ritsu Tanaka

发明人： Yukinobu Yura ,  Hirofumi Yamaguchi ,  Ritsu Tanaka

IPC分类号： C04B35/495 ,  H01L41/187

CPC分类号： H01L41/1873 ,  C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3262 ,  C04B2235/3267 ,  C04B2235/449 ,  C04B2235/72 ,  C04B2235/768 ,  C04B2235/79 ,  H01L41/0805 ,  H01L41/083 ,  H01L41/0973

摘要： A (Li, Na, K)(Nb, Ta)O3 based piezoelectric/electrostrictive porcelain composition obtained by adding a slight amount of a Mn compound to a perovskite type oxide containing Li, Na and K as A-site elements and contains at least Nb out of Nb and Ta as B-site elements, where a ratio of a total number of atoms of the A-site elements to a total number of atoms of the B-site elements is not smaller than 1. A composition of the perovskite type oxide as a principal component is represented by a general formula: {Liy(Na1-xKx)1-y}a(Nb1-zTaz)O3. The A/B ratio “a” preferably satisfies 1

摘要翻译： 通过向含有Li，Na和K的钙钛矿型氧化物中添加少量的Mn化合物作为A位元素而至少含有（Li，Na，K）（Nb，Ta）O 3的压电/电致伸缩瓷组合物 Nb中的Nb和Ta作为B位元素，其中A位元素的总原子数与B位元素的总原子数的比率不小于1.钙钛矿的组成 氧化物作为主要成分的通式为：{Liy（Na1-xKx）1-y} a（Nb1-zTaz）O3。 A / B比“a”优选满足1

公开(公告)号：US08128834B2

公开(公告)日：2012-03-06

申请号：US12036373

申请日：2008-02-25

申请人： Yukinobu Yura ,  Hirofumi Yamaguchi ,  Ritsu Tanaka

发明人： Yukinobu Yura ,  Hirofumi Yamaguchi ,  Ritsu Tanaka

IPC分类号： C04B35/49

CPC分类号： H01L41/1873 ,  C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3262 ,  C04B2235/3267 ,  C04B2235/449 ,  C04B2235/72 ,  C04B2235/768 ,  C04B2235/79 ,  H01L41/0805 ,  H01L41/083 ,  H01L41/0973

摘要： A (Li, Na, K)(Nb, Ta)O3 based piezoelectric/electrostrictive porcelain composition obtained by adding a slight amount of a Mn compound to a perovskite type oxide containing Li, Na and K as A-site elements and contains at least Nb out of Nb and Ta as B-site elements, where a ratio of a total number of atoms of the A-site elements to a total number of atoms of the B-site elements is not smaller than 1. A composition of the perovskite type oxide as a principal component is represented by a general formula: {Liy(Na1-xKx)1-y}a(Nb1-zTaz)O3. The A/B ratio “a” preferably satisfies 1

摘要翻译： 通过向含有Li，Na和K的钙钛矿型氧化物中添加少量的Mn化合物作为A位元素而至少含有（Li，Na，K）（Nb，Ta）O 3的压电/电致伸缩瓷组合物 Nb中的Nb和Ta作为B位元素，其中A位元素的总原子数与B位元素的总原子数的比率不小于1.钙钛矿的组成 氧化物作为主要成分的通式为：{Liy（Na1-xKx）1-y} a（Nb1-zTaz）O3。 A / B比“a”优选满足1

公开(公告)号：US08119023B2

公开(公告)日：2012-02-21

申请号：US12399335

申请日：2009-03-06

申请人： Ritsu Tanaka ,  Hirofumi Yamaguchi ,  Yukinobu Yura

发明人： Ritsu Tanaka ,  Hirofumi Yamaguchi ,  Yukinobu Yura

IPC分类号： H01L41/187

CPC分类号： H01L41/1873 ,  C04B35/495 ,  C04B35/62685 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3251 ,  C04B2235/3298 ,  C04B2235/449 ,  C04B2235/768 ,  C04B2235/79 ,  H01L41/273 ,  H01L41/314 ,  H01L41/43

摘要： A (Li, Na, K)(Nb, Ta)O3-based piezoelectric/electrostrictive ceramic composition having a large field-induced distortion during application of a high electric field is provided. After synthesizing a perovskite oxide containing Li (lithium), Na (sodium) and K (potassium) as A-site elements and containing at least Nb (niobium) out of the Nb and Ta (tantalum) as B-site elements, a ratio of total number of atoms of the A-site elements to total number of atoms of the B-site elements being higher than 1, a Bi (bismuth) compound is added to the perovskite oxide and the perovskite oxide is reacted with the Bi compound. An addition amount of the Bi compound with respect to 100 molar parts of the perovskite oxide is preferably equal to or greater than 0.01 molar part and equal to or smaller than 0.1 molar part in terms of Bi atoms.

摘要翻译： 提供了在施加高电场期间具有大的场致畸变的（Li，Na，K）（Nb，Ta）O 3系压电/电致伸缩陶瓷组合物。 在合成含有Li（锂），Na（钠）和K（钾）作为A位元素并且至少含Nb（铌）的Nb和Ta（钽）作为B位元素的钙钛矿氧化物后， A位元素的原子总数与B位元素的原子总数高于1时，将Bi（铋）化合物加入到钙钛矿氧化物中，并使钙钛矿氧化物与Bi化合物反应。 相对于100摩尔份的钙钛矿氧化物，Bi化合物的添加量优选以Bi原子计等于或大于0.01摩尔份并且等于或小于0.1摩尔份。

公开(公告)号：US07598659B2

公开(公告)日：2009-10-06

申请号：US11685359

申请日：2007-03-13

申请人： Yukinobu Yura ,  Hirofumi Yamaguchi ,  Ritsu Tanaka

发明人： Yukinobu Yura ,  Hirofumi Yamaguchi ,  Ritsu Tanaka

IPC分类号： H01L41/08

CPC分类号： H01L41/1873 ,  H01L41/0805 ,  H01L41/0973 ,  H01L41/257 ,  H01L41/43

摘要： A piezoelectric/electrostrictive device which exhibits an excellent piezoelectric characteristic and which has only a small dependence on a temperature is provided. The piezoelectric/electrostrictive device includes a piezoelectric/electrostrictive portion made of a piezoelectric ceramic, and electrodes electrically connected to the piezoelectric/electrostrictive portion. The piezoelectric ceramic reversibly transits to a tetragonal phase and an orthorhombic phase at a phase transition point as a boundary. The piezoelectric/electrostrictive portion is formed by a polarization treatment performed under the conditions that a treatment temperature ranges from a first temperature which exceeds the phase transition point of the piezoelectric ceramic to a second temperature which is 50° C. higher than the first temperature.

摘要翻译： 提供具有优异的压电特性并且对温度只有很小依赖性的压电/电致伸缩器件。 压电/电致伸缩器件包括由压电陶瓷制成的压电/电致伸缩部分，以及与压电/电致伸缩部分电连接的电极。 压电陶瓷在相转变点作为边界可逆地转变为四方相和正交相。 压电/电致伸缩部分通过在处理温度范围从超过压电陶瓷的相变点的第一温度到比第一温度高50℃的第二温度的条件下进行的极化处理形成。

公开(公告)号：US20090236556A1

公开(公告)日：2009-09-24

申请号：US12399335

申请日：2009-03-06

申请人： Ritsu Tanaka ,  Hirofumi Yamaguchi ,  Yukinobu Yura

发明人： Ritsu Tanaka ,  Hirofumi Yamaguchi ,  Yukinobu Yura

IPC分类号： H01L41/187

CPC分类号： H01L41/1873 ,  C04B35/495 ,  C04B35/62685 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3251 ,  C04B2235/3298 ,  C04B2235/449 ,  C04B2235/768 ,  C04B2235/79 ,  H01L41/273 ,  H01L41/314 ,  H01L41/43

摘要： A (Li, Na, K)(Nb, Ta)O3-based piezoelectric/electrostrictive ceramic composition having a large field-induced distortion during application of a high electric field is provided. After synthesizing a perovskite oxide containing Li (lithium), Na (sodium) and K (potassium) as A-site elements and containing at least Nb (niobium) out of the Nb and Ta (tantalum) as B-site elements, a ratio of total number of atoms of the A-site elements to total number of atoms of B-site elements being higher than 1, a Bi (bismuth) compound is added to the perovskite oxide and the perovskite oxide is reacted with the Bi compound. An addition amount of the Bi compound with respect to 100 molar parts of the perovskite oxide is preferably equal to or greater than 0.01 molar part and equal to or smaller than 0.1 molar part in terms of Bi atoms.

摘要翻译： 提供了在施加高电场期间具有大的场致畸变的（Li，Na，K）（Nb，Ta）O 3系压电/电致伸缩陶瓷组合物。 在合成含有Li（锂），Na（钠）和K（钾）作为A位元素并且至少含Nb（铌）的Nb和Ta（钽）作为B位元素的钙钛矿氧化物后， A位元素的原子总数与B位元素的原子总数高于1时，将Bi（铋）化合物加入钙钛矿氧化物中，并使钙钛矿氧化物与Bi化合物反应。 相对于100摩尔份的钙钛矿氧化物，Bi化合物的添加量优选以Bi原子计等于或大于0.01摩尔份并且等于或小于0.1摩尔份。

公开(公告)号：US20070216260A1

公开(公告)日：2007-09-20

申请号：US11685359

申请日：2007-03-13

申请人： Yukinobu Yura ,  Hirofumi Yamaguchi ,  Ritsu Tanaka

发明人： Yukinobu Yura ,  Hirofumi Yamaguchi ,  Ritsu Tanaka

IPC分类号： H01L41/193

CPC分类号： H01L41/1873 ,  H01L41/0805 ,  H01L41/0973 ,  H01L41/257 ,  H01L41/43

摘要： There is disclosed a piezoelectric/electrostrictive device which exhibits an excellent piezoelectric characteristic and which has an only small dependence on a temperature so that the piezoelectric characteristic does not easily change with the temperature. A piezoelectric/electrostrictive device includes a piezoelectric/electrostrictive portion made of a piezoelectric ceramic, and electrodes electrically connected to the piezoelectric/electrostrictive portion. The piezoelectric ceramic can reversibly transit to a tetragonal phase and an orthorhombic phase at a phase transition point as a boundary, and the piezoelectric/electrostrictive portion is formed by a polarization treatment performed on conditions that a treatment temperature ranges from a temperature which exceeds the phase transition point of the piezoelectric ceramic to a temperature which is 50° C. higher than the temperature.

摘要翻译： 公开了一种压电/电致伸缩器件，该压电/电致伸缩器件具有优异的压电特性，并且其对温度的依赖性很小，因此压电特性不容易随温度而变化。 压电/电致伸缩器件包括由压电陶瓷制成的压电/电致伸缩部分和与压电/电致伸缩部分电连接的电极。 压电陶瓷可以在作为边界的相变点处可逆地转移到四方相和正交相，并且压电/电致伸缩部分通过在处理温度范围为超过相位的温度的条件下进行的极化处理形成 压电陶瓷的转变点比温度高50℃的温度。

公开(公告)号：US08541102B2

公开(公告)日：2013-09-24

申请号：US12495830

申请日：2009-07-01

申请人： Kazuyuki Kaigawa ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

发明人： Kazuyuki Kaigawa ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

IPC分类号： B32B5/16 ,  H01L41/18

CPC分类号： H01L41/1873 ,  C01G35/006 ,  C01P2004/03 ,  C01P2006/10 ,  C01P2006/40 ,  C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3241 ,  C04B2235/3251 ,  C04B2235/3267 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3298 ,  C04B2235/449 ,  C04B2235/5445 ,  C04B2235/656 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/661 ,  C04B2235/765 ,  C04B2235/768 ,  C04B2235/77 ,  C04B2235/783 ,  C04B2235/786 ,  C04B2235/79 ,  H01L41/43

摘要： Piezoelectric materials having improved electrical properties, and manufacturing methods of the same, are provided. In (Li, Na, K, Bi)(Nb, Ta)O3 based piezoelectric materials, the surface microstructures of sintered bodies include microscopic grains having grain diameters of less than 5 μm, intermediate grains having grain diameters of 5 μm or more and less than 15 μm, and coarse grains having grain diameters of 15 μm or more and 100 μm or less.

摘要翻译： 提供具有改善的电性能的压电材料及其制造方法。 在（Li，Na，K，Bi）（Nb，Ta）O 3基压电材料中，烧结体的表面微观结构包括粒径小于5μm的微晶粒，粒径为5μm以上的中间粒子 15μm以上的粗粒和15μm以上且100μm以下的粗粒。

公开(公告)号：US20100019187A1

公开(公告)日：2010-01-28

申请号：US12505609

申请日：2009-07-20

申请人： Kazuyuki Kaigawa ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

发明人： Kazuyuki Kaigawa ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

IPC分类号： C04B35/01

CPC分类号： H01L41/187 ,  C01G33/00 ,  C01G33/006 ,  C01P2002/34 ,  C01P2002/52 ,  C01P2002/82 ,  C01P2006/32 ,  C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3206 ,  C04B2235/3217 ,  C04B2235/3251 ,  C04B2235/3256 ,  C04B2235/3258 ,  C04B2235/3267 ,  C04B2235/3293 ,  C04B2235/3298 ,  C04B2235/528 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6567 ,  C04B2235/768 ,  C04B2235/77 ,  C04B2235/79 ,  C04B2235/80 ,  C04B2235/9607

摘要： There is disclosed a piezoelectric/electrostrictive ceramics which is a sintered body having a structure where a matrix and a filler are brought into a composite, the matrix is made of an alkali niobate-based piezoelectric/electrostrictive material, which includes a large number of grains combined with one another, including a perovskite type oxide, which includes at least one element selected from the group consisting of Li, Na and K as an A site constituent element and Nb as a B site constituent element, as a main crystal phase, the filler is made of a material (with the proviso that an alkali niobate-based material is excluded) having a thermal expansion coefficient smaller than that of the alkali niobate-based piezoelectric/electrostrictive material, and the volume fraction of the filler with respect to the total volume of the matrix and the filler is 0.5 vol % or more and below 10 vol %.

摘要翻译： 公开了一种压电/电致伸缩陶瓷，其是具有基体和填料成复合体的结构的烧结体，该基体由碱铌酸盐系压电/电致伸缩材料构成，其包含大量的晶粒 包括钙钛矿型氧化物，其包含选自由Li，Na和K组成的组中的至少一种作为A位构成元素的Nb和作为B位构成元素的Nb作为主晶相， 填料由热膨胀系数小于碱铌酸酯类压电/电致伸缩材料的材料制成（条件是不含碱铌酸盐基材料），填料的体积分数相对于 基体和填料的总体积为0.5体积％以上且低于10体积％。