公开(公告)号：US07956518B2

公开(公告)日：2011-06-07

申请号：US12244144

申请日：2008-10-02

申请人： Shuichi Ozawa ,  Hirofumi Yamaguchi

发明人： Shuichi Ozawa ,  Hirofumi Yamaguchi

IPC分类号： H01L41/08

CPC分类号： C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3251 ,  C04B2235/3267 ,  C04B2235/3294 ,  C04B2235/449 ,  C04B2235/768 ,  C04B2235/79 ,  H01L41/083 ,  H01L41/0973 ,  H01L41/187

摘要： The invention provides a (Li, Na, K)(Nb, Ta, Sb)O3 type piezoelectric/electrostrictive ceramic composition excellent in the electric field-induced strain at the time of high electric field application. The piezoelectric/electrostrictive film of a piezoelectric/electrostrictive actuator is a sintered body of a piezoelectric/electrostrictive ceramic composition. The piezoelectric/electrostrictive ceramic composition comprises a perovskite type oxide comprising as A site elements, Li, Na, and K and as B site elements, Nb and Sb and having a ratio of the total number of atoms of the A site elements to the total number of atoms of the B site elements greater than 1 and not less than 1 mol % and not more than 10 mol % of the number of Sb atoms in the total number of atoms of the B site elements and a Mn compound added to said perovskite type oxide.

摘要翻译： 本发明提供了在高电场施加时电场诱导应变优异的（Li，Na，K）（Nb，Ta，Sb）O 3型压电/电致伸缩陶瓷组合物。 压电/电致伸缩致动器的压电/电致伸缩膜是压电/电致伸缩陶瓷组合物的烧结体。 压电/电致伸缩陶瓷组合物包含钙钛矿型氧化物，其包含作为A位点元素，Li，Na和K以及B位元素，Nb和Sb，并且具有A位点元素的总原子数与总数 B位元素的原子数大于1且不小于B位元素的总原子数中的Sb原子数的1mol％且不大于10mol％，以及添加到所述钙钛矿中的Mn化合物 型氧化物。

公开(公告)号：US07803282B2

公开(公告)日：2010-09-28

申请号：US11844560

申请日：2007-08-24

申请人： Hirofumi Yamaguchi ,  Shuichi Ozawa

发明人： Hirofumi Yamaguchi ,  Shuichi Ozawa

IPC分类号： H01L41/22

CPC分类号： H01L41/1873 ,  C04B35/495 ,  C04B35/6262 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3215 ,  C04B2235/3234 ,  C04B2235/3236 ,  C04B2235/3249 ,  C04B2235/3251 ,  C04B2235/3262 ,  C04B2235/3296 ,  C04B2235/449 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/765 ,  C04B2235/768 ,  H01L41/43

摘要： There is disclosed a piezoelectric/electrostrictive body in which a polarization direction of a domain indicates reversible conversion in an electric field and a strain ratio increases, a manufacturing method of the same, and a piezoelectric/electrostrictive element. The piezoelectric/electrostrictive body includes a matrix phase represented by a composition formula ABO3, and an additional, material phase included in the matrix phase, having at least a crystal structure of tetragonal system, represented by a composition formula ABO3 and having a composition different from that of the matrix phase. For example, an alkali-niobate-based material of the tetragonal system, BaTiO3, PZT, PbTiO3, or (Bi0.5, Na0.5)TiO3 is added as an additional material forming the additional material phase to an alkali-niobate-based matrix material forming the matrix phase to form the piezoelectric/electrostrictive body. An amount of the additional material to be added has a volume ratio of 5 vol % or more and 30 vol % or less (5 vol % or more and 45 vol % or less in a case where an additional material having a composition to which Mn has been added is used) with respect to the matrix material.

摘要翻译： 公开了一种压电/电致伸缩体，其中畴的极化方向表示电场中的可逆转换和应变比增加，其制造方法和压电/电致伸缩元件。 压电/电致伸缩体包括由组成式ABO 3表示的基体相以及包含在基体相中的另外的材料相，其具有由组成式ABO 3表示的组成式ABO 3表示的至少具有四方晶系的晶体结构，并且具有不同于 矩阵相的相位。 例如，作为形成附加材料相的附加材料，添加碱性铌酸盐基材料BaTiO3，PZT，PbTiO3或（Bi0.5，Na0.5）TiO3作为碱铌酸盐系， 形成基体相的基体材料形成压电/电致伸缩体。 添加的附加材料的量的体积比为5体积％以上且30体积％以下（在具有Mn组成的附加材料的情况下为5体积％以上且45体积％以下的情况 已经添加）相对于基质材料。

公开(公告)号：US07576479B2

公开(公告)日：2009-08-18

申请号：US11673769

申请日：2007-02-12

申请人： Kei Sato ,  Tetsuya Hattori ,  Hirofumi Yamaguchi ,  Shuichi Ozawa

发明人： Kei Sato ,  Tetsuya Hattori ,  Hirofumi Yamaguchi ,  Shuichi Ozawa

IPC分类号： H01J1/14 ,  H01J1/05

CPC分类号： H01J1/312 ,  B82Y10/00 ,  H01J1/30 ,  H01J2201/306 ,  H01J2201/312

摘要： Provided is a piezoelectric-film-type electron emitter of high durability exhibiting suppressed reduction in electron emission quantity, which reduction would otherwise occur with repeated use of the electron emitter. The electron emitter includes a substrate, a lower electrode, an emitter layer, and an upper electrode. The upper electrode has a plurality of openings, and an emitter section located on the top surface of the emitter layer is exposed through the openings to a reduced-pressure atmosphere. The electron emitter is configured so that when a pulse drive voltage Va is applied between the lower electrode and the upper electrode, electrons are accumulated on the emitter section, and then the electrons are emitted toward the reduced-pressure atmosphere. The emitter layer contains a primary component (i.e., a ferroelectric composition) and an additional component. The additional component contains a transition metal oxide of high oxidation number which can serve as an oxidizing agent by being converted into an oxide of the transition metal of lower oxidation number.

摘要翻译： 提供了一种具有高耐久性的压电薄膜型电子发射体，其显示出抑制电子发射量的减少，但是通过反复使用电子发射器将会发生减小。 电子发射器包括衬底，下电极，发射极层和上电极。 上电极具有多个开口，并且位于发射极层的顶表面上的发射极部分通过开口暴露于减压气氛。 电子发射器被配置为使得当在下电极和上电极之间施加脉冲驱动电压Va时，电子在发射极部分积聚，然后电子朝向减压气氛发射。 发射极层包含主要组分（即铁电组合物）和附加组分。 附加成分含有高氧化数的过渡金属氧化物，其可以通过转化为较低氧化数的过渡金属的氧化物而用作氧化剂。

公开(公告)号：US20090102325A1

公开(公告)日：2009-04-23

申请号：US12251523

申请日：2008-10-15

申请人： Shuichi Ozawa ,  Hirofumi Yamaguchi

发明人： Shuichi Ozawa ,  Hirofumi Yamaguchi

IPC分类号： H01L41/04

CPC分类号： C04B35/495 ,  C01G23/003 ,  C01P2002/34 ,  C01P2002/72 ,  C01P2006/11 ,  C01P2006/40 ,  C01P2006/80 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3251 ,  C04B2235/3255 ,  C04B2235/449 ,  C04B2235/656 ,  C04B2235/76 ,  C04B2235/765 ,  C04B2235/768 ,  C04B2235/77 ,  C04B2235/79 ,  C04B2235/80 ,  H01L41/083 ,  H01L41/0973 ,  H01L41/1873

摘要： The invention provides a (Li, Na, K)(Nb, Ta)O3 type piezoelectric/electrostrictive ceramic composition capable of being sintered at a low temperature and providing good electric field-induced strain at the time of high electric field application at a temperature for practical use. The piezoelectric/electrostrictive ceramic composition has an ABO3 type composition formula wherein lithium, sodium, and potassium are contained as first elements; niobium and tantalum are contained as second elements; oxygen (O) is contained as a third element; A/B ratio is higher than 1; and the ratio of the number of Ta atoms to the total number of atoms of the second elements is 10 mol % or more and 50 mol % or less, and comprises a perovskite type oxide wherein the first elements are A site composing elements and the second elements are B site composing elements.

摘要翻译： 本发明提供了一种能够在低温下烧结的（Li，Na，K）（Nb，Ta）O 3型压电/电致伸缩陶瓷组合物，并在高温下施加高电场时提供良好的电场应变 供实际使用。 压电/电致伸缩陶瓷组合物具有ABO 3型组成式，其中包含锂，钠和钾作为第一元素; 含有铌和钽作为第二元素; 含有氧（O）作为第三元素; A / B比高于1; 并且第二元素的Ta原子数与总原子数的比率为10摩尔％以上且50摩尔％以下，并且包含钙钛矿型氧化物，其中第一元素为A构成元素，第二元素为第二元素 元素是B网站组成元素。

公开(公告)号：US20080054216A1

公开(公告)日：2008-03-06

申请号：US11844560

申请日：2007-08-24

申请人： Hirofumi Yamaguchi ,  Shuichi Ozawa

发明人： Hirofumi Yamaguchi ,  Shuichi Ozawa

IPC分类号： B22F7/02 ,  C04B35/495

CPC分类号： H01L41/1873 ,  C04B35/495 ,  C04B35/6262 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3215 ,  C04B2235/3234 ,  C04B2235/3236 ,  C04B2235/3249 ,  C04B2235/3251 ,  C04B2235/3262 ,  C04B2235/3296 ,  C04B2235/449 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/765 ,  C04B2235/768 ,  H01L41/43

摘要： There is disclosed a piezoelectric/electrostrictive body in which a polarization direction of a domain indicates reversible conversion in an electric field and a strain ratio increases, a manufacturing method of the same, and a piezoelectric/electrostrictive element. The piezoelectric/electrostrictive body includes a matrix phase represented by a composition formula ABO3, and an additional, material phase included in the matrix phase, having at least a crystal structure of tetragonal system, represented by a composition formula ABO3 and having a composition different from that of the matrix phase. For example, an alkali-niobate-based material of the tetragonal system, BaTiO3, PZT, PbTiO3, or (Bi0.5, Na0.5)TiO3 is added as an additional material forming the additional material phase to an alkali-niobate-based matrix material forming the matrix phase to form the piezoelectric/electrostrictive body. An amount of the additional material to be added has a volume ratio of 5 vol % or more and 30 vol % or less (5 vol % or more and 45 vol % or less in a case where an additional material having a composition to which Mn has been added is used) with respect to the matrix material.

摘要翻译： 公开了一种压电/电致伸缩体，其中畴的极化方向表示电场中的可逆转换和应变比增加，其制造方法和压电/电致伸缩元件。 压电/电致伸缩体包括由组成式ABO 3 3表示的基体相和包含在基体相中的另外的材料相，其具有由组成式表示的至少四方晶系的晶体结构 具有不同于基质相的组成的组分ABO 3 3。 例如，四正方晶系的碱铌酸酯基材料BaTiO 3 3 PZT，PbTiO 3或（Bi 0.5 N，Na 作为形成附加材料相的附加材料加入到形成基体相的碱铌酸酯基基质材料中以形成压电/电致伸缩体，加入TiO 3。 添加的附加材料的量的体积比为5体积％以上且30体积％以下（在具有Mn组成的附加材料的情况下为5体积％以上且45体积％以下的情况 已经添加）相对于基质材料。

公开(公告)号：US20070188069A1

公开(公告)日：2007-08-16

申请号：US11673769

申请日：2007-02-12

申请人： Kei Sato ,  Tetsuya Hattori ,  Hirofumi Yamaguchi ,  Shuichi Ozawa

发明人： Kei Sato ,  Tetsuya Hattori ,  Hirofumi Yamaguchi ,  Shuichi Ozawa

IPC分类号： H01J1/00

CPC分类号： H01J1/312 ,  B82Y10/00 ,  H01J1/30 ,  H01J2201/306 ,  H01J2201/312

摘要： Provided is a piezoelectric-film-type electron emitter of high durability exhibiting suppressed reduction in electron emission quantity, which reduction would otherwise occur with repeated use of the electron emitter. The electron emitter includes a substrate, a lower electrode, an emitter layer, and an upper electrode. The upper electrode has a plurality of openings, and an emitter section located on the top surface of the emitter layer is exposed through the openings to a reduced-pressure atmosphere. The electron emitter is configured so that when a pulse drive voltage Va is applied between the lower electrode and the upper electrode, electrons are accumulated on the emitter section, and then the electrons are emitted toward the reduced-pressure atmosphere. The emitter layer contains a primary component (i.e., a ferroelectric composition) and an additional component. The additional component contains a transition metal oxide of high oxidation number which can serve as an oxidizing agent by being converted into an oxide of the transition metal of lower oxidation number.

摘要翻译： 提供了一种具有高耐久性的压电薄膜型电子发射体，其显示出抑制电子发射量的减少，但是通过反复使用电子发射器将会发生减小。 电子发射器包括衬底，下电极，发射极层和上电极。 上电极具有多个开口，并且位于发射极层的顶表面上的发射极部分通过开口暴露于减压气氛。 电子发射器被配置为使得当在下电极和上电极之间施加脉冲驱动电压Va时，电子在发射极部分积聚，然后电子朝向减压气氛发射。 发射极层包含主要组分（即铁电组合物）和附加组分。 附加成分含有高氧化数的过渡金属氧化物，其可以通过转化为较低氧化数的过渡金属的氧化物而用作氧化剂。

公开(公告)号：US08269402B2

公开(公告)日：2012-09-18

申请号：US12618925

申请日：2009-11-16

申请人： Hirofumi Yamaguchi ,  Shuichi Ozawa ,  Yuji Noguchi ,  Masaru Miyayama

发明人： Hirofumi Yamaguchi ,  Shuichi Ozawa ,  Yuji Noguchi ,  Masaru Miyayama

IPC分类号： H01L41/187

CPC分类号： H01L41/1878 ,  H01L41/083 ,  H01L41/0973 ,  H01L41/273 ,  H01L41/314 ,  H01L41/43 ,  Y10T29/42

摘要： Piezoelectric/electrostrictive ceramics having the composition represented by the general formula: xBNT-yBKT-zBT (x+y+z=1) are provided, wherein at least one kind among A-site elements are allowed to become deficient from stoichiometry in which a point (x, y, z) representing content ratios x, y and z of (Bi1/2Na1/2)TiO3, (Bi1/2K1/2)TiO3 and BaTiO3 is within a range including a border line of a quadrangle ABCD with a point A, a point B, a point C and a point D as vertices in a ternary phase diagram. Vacancies are formed in an A-site of a perovskite structure by allowing the A-site elements to become deficient from stoichiometry. An amount of A-site vacancies becomes at least 2 mol % to at most 6 mol %.

摘要翻译： 提供具有由通式xBNT-yBKT-zBT（x + y + z = 1）表示的组成的压电/电致伸缩陶瓷，其中A位元素中的至少一种因化学计量而变得不足，其中a （Bi1 / 2Na1 / 2）TiO3，（Bi1 / 2K1 / 2）TiO3和BaTiO3的含量比x，y和z的点（x，y，z）在包括四边形ABCD的边界线 点A，点B，点C和点D作为三元相位图中的顶点。 通过使A位元素从化学计量学上变得缺陷，在钙钛矿结构的A位形成空位。 A位空位量变为至少2mol％至至多6mol％。

公开(公告)号：US08022604B2

公开(公告)日：2011-09-20

申请号：US12251523

申请日：2008-10-15

申请人： Shuichi Ozawa ,  Hirofumi Yamaguchi

发明人： Shuichi Ozawa ,  Hirofumi Yamaguchi

IPC分类号： H01L41/187

CPC分类号： C04B35/495 ,  C01G23/003 ,  C01P2002/34 ,  C01P2002/72 ,  C01P2006/11 ,  C01P2006/40 ,  C01P2006/80 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3251 ,  C04B2235/3255 ,  C04B2235/449 ,  C04B2235/656 ,  C04B2235/76 ,  C04B2235/765 ,  C04B2235/768 ,  C04B2235/77 ,  C04B2235/79 ,  C04B2235/80 ,  H01L41/083 ,  H01L41/0973 ,  H01L41/1873

摘要： The invention provides a (Li, Na, K)(Nb, Ta)O3 type piezoelectric/electrostrictive ceramic composition capable of being sintered at a low temperature and providing good electric field-induced strain at the time of high electric field application at a temperature for practical use. The piezoelectric/electrostrictive ceramic composition has an ABO3 type composition formula wherein lithium, sodium, and potassium are contained as first elements; niobium and tantalum are contained as second elements; oxygen (O) is contained as a third element; A/B ratio is higher than 1; and the ratio of the number of Ta atoms to the total number of atoms of the second elements is 10 mol % or more and 50 mol % or less, and comprises a perovskite type oxide wherein the first elements are A site composing elements and the second elements are B site composing elements.

摘要翻译： 本发明提供了一种能够在低温下烧结的（Li，Na，K）（Nb，Ta）O 3型压电/电致伸缩陶瓷组合物，并在高温下施加高电场时提供良好的电场应变 供实际使用。 压电/电致伸缩陶瓷组合物具有ABO 3型组成式，其中包含锂，钠和钾作为第一元素; 含有铌和钽作为第二元素; 含有氧（O）作为第三元素; A / B比高于1; 并且第二元素的Ta原子数与总原子数的比率为10摩尔％以上且50摩尔％以下，并且包含钙钛矿型氧化物，其中第一元素为A构成元素，第二元素为第二元素 元素是B网站组成元素。

公开(公告)号：US08124047B2

公开(公告)日：2012-02-28

申请号：US11958636

申请日：2007-12-18

申请人： Kazuyuki Kaigawa ,  Shuichi Ozawa ,  Hirofumi Yamaguchi

发明人： Kazuyuki Kaigawa ,  Shuichi Ozawa ,  Hirofumi Yamaguchi

IPC分类号： C01G33/00 ,  C04B35/468

CPC分类号： C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3251 ,  H01L41/1873 ,  H01L41/43

摘要： A method for manufacturing (Li, Na, K)(Nb, Ta)O3 type piezoelectric material having an improved relative dielectric constant and an electric-field-induced strain is provided. The method is a process in which a formed body of powder particles constituted of a composition of (Li, Na, K)(Nb, Ta)O3 is fired to produce the (Li, Na, K)(Nb, Ta)O3 type piezoelectric material, and a constant temperature is kept in a range of 850 to 1000° C. for a constant time before heating to a firing temperature.

摘要翻译： 提供了具有改善的相对介电常数和电场诱导应变的（Li，Na，K）（Nb，Ta）O3型压电材料的制造方法。 该方法是将由（Li，Na，K）（Nb，Ta）O 3的组成构成的粉末粒子的成形体烧成以制造（Li，Na，K）（Nb，Ta）O 3型 压电材料，并将恒温恒定时间保持在850〜1000℃的范围内，再加热至烧成温度。

公开(公告)号：US07911117B2

公开(公告)日：2011-03-22

申请号：US12266154

申请日：2008-11-06

申请人： Hirofumi Yamaguchi ,  Shuichi Ozawa

发明人： Hirofumi Yamaguchi ,  Shuichi Ozawa

IPC分类号： H01L41/08

CPC分类号： C04B35/495 ,  C01G33/006 ,  C01G35/006 ,  C01P2002/34 ,  C01P2002/52 ,  C01P2002/72 ,  C01P2006/40 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3251 ,  C04B2235/3255 ,  C04B2235/3262 ,  C04B2235/3267 ,  C04B2235/449 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/765 ,  C04B2235/768 ,  C04B2235/783 ,  C04B2235/785 ,  C04B2235/786 ,  C04B2235/787 ,  C04B2235/79 ,  C04B2235/80 ,  H01L41/1873

摘要： The piezoelectric/electrostrictive body is represented by a composition formula ABO3 (A includes at least one element selected from the group consisting of Li, Na and K, and B includes at least one element selected from the group consisting of Nb, Ta, Sb and Mn), and the body is formed so that a main phase is a tetragonal system, and the orientation degree of a (001) face after a polarization treatment is smaller than that of a (100) face, in a plane vertical to the applying direction of an electric field applied so as to perform the polarization treatment. The present inventive piezoelectric/electrostrictive body has a ratio between a diffraction peak intensity I001 of the (001) face and a diffraction peak intensity I100 of the (100) face of I001/I100≦1, in an X-ray diffraction pattern in the same plane after the polarization treatment.

摘要翻译： 压电/电致伸缩体由组成式ABO3表示（A包括选自Li，Na和K中的至少一种元素，B包括选自Nb，Ta，Sb和 Mn），并且主体形成为主相为四方晶系，偏振处理后的（001）面的取向度比（100）面的取向度小于（100）面的垂直于涂布的面的取向度 施加电场的方向进行极化处理。 本发明的压电/电致伸缩体具有（001）面的衍射峰强度I001与（001）面的衍射峰强度I100与I001 / I100＆n1E; 1的X射线衍射图 同一平面经过极化处理。