摘要:
A lead-free piezoelectric material that does not undergo depolarization in a wide operating temperature range and has a good piezoelectric constant is provided. A piezoelectric material include a perovskite-type metal oxide represented by (Ba1-xCax)a(Ti1-yZry)O3 (where 1.00≦a≦1.01, 0.125≦x≦0.175, and 0.055≦y≦0.090) as a main component, and manganese incorporated in the perovskite-type metal oxide. The manganese content relative to 100 parts by weight of the perovskite-type metal oxide is 0.02 parts by weight or more and 0.10 parts by weight or less on a metal basis.
摘要:
A lead-free piezoelectric material that has stable, excellent piezoelectric constant and mechanical quality factor in a wide operating temperature range is provided. A piezoelectric material include a perovskite-type metal oxide represented by (Ba1-xCax)a(Ti1-yZry)O3 (where 1.00≦a≦1.01, 0.155≦x≦0.300, 0.041≦y≦0.069) as a main component, and manganese incorporated in the perovskite-type metal oxide. The manganese content relative to 100 parts by weight of the perovskite-type metal oxide is 0.12 parts by weight or more and 0.40 parts by weight or less on a metal basis.
摘要:
Provided are a barium titanate-based piezoelectric ceramics having satisfactory piezoelectric performance and a satisfactory mechanical quality factor (Qm), and a piezoelectric element using the same. Specifically provided are a piezoelectric ceramics, including: crystal particles; and a grain boundary between the crystal particles, in which the crystal particles each include barium titanate having a perovskite-type structure and manganese at 0.04% by mass or more and 0.20% by mass or less in terms of a metal with respect to the barium titanate, and the grain boundary includes at least one compound selected from the group consisting of Ba4Ti12O27 and Ba6Ti17O40, and a piezoelectric element using the same.
摘要翻译:提供一种具有令人满意的压电性能和令人满意的机械品质因数(Qm)的钛酸钡基压电陶瓷,以及使用它的压电元件。 具体提供的是压电陶瓷,包括:晶体颗粒; 晶体粒子各自包含钛酸钙,钛酸钙,钛,钛,钛,钛,钛,钛,钛,钛,钛, 钛酸盐,并且晶界包括至少一种选自Ba 4 Ti 12 O 27和Ba 6 Ti 17 O 40的化合物和使用其的压电元件。
摘要:
A compound having a tungsten bronze structure exhibiting a high Curie temperature, good insulating resistance and mechanical quality factor, and excellent piezoelectric properties is provided. The compound contains a tungsten bronze structure oxide represented by general formula (1): x(BaB2O6)-y(CaB2O6)-z{(Bi1/2C1/2)B2O6} (1) where B represents at least one of Nb and Ta; C represents at least one of Na and K; x+y+z=1; x satisfies 0.2≦x≦0.85; y satisfies 0≦y≦0.5; and z satisfies 0
摘要翻译:提供了具有高居里温度,良好的绝缘电阻和机械品质因数以及优异的压电性能的钨青铜结构的化合物。 该化合物含有由通式(1)表示的钨青铜结构氧化物:x(BaB 2 O 6)-y(CaB 2 O 6)-z {(Bi1 / 2C1 / 2)B2O6}(1)其中B表示Nb和Ta中的至少一种 ; C表示Na和K中的至少一种; x + y + z = 1; x满足0.2≦̸ x≦̸ 0.85; y满足0≦̸ y≦̸ 0.5; z满足0
摘要:
Provided are a piezoelectric thin film having good piezoelectricity in which a rhombohedral structure and a tetragonal structure are mixed, and a piezoelectric element using the piezoelectric thin film. The piezoelectric thin film includes a perovskite type metal oxide, in which the perovskite type metal oxide is a mixed crystal system of at least a rhombohedral structure and a tetragonal structure, and a ratio between an a-axis lattice parameter and a c-axis lattice parameter of the tetragonal structure satisfies 1.15≦c/a≦1.30. The piezoelectric element includes on a substrate: the above-mentioned piezoelectric thin film; and a pair of electrodes provided in contact with the piezoelectric thin film.
摘要翻译:提供一种压电薄膜,其具有混合菱方结构和四边形结构的压电性,以及使用压电薄膜的压电元件。 压电薄膜包括钙钛矿型金属氧化物,其中钙钛矿型金属氧化物是至少具有菱方结构和四方结构的混晶系统,a轴晶格参数与c轴晶格之比 四方结构的参数满足1.15≦̸ c / a≦̸ 1.30。 压电元件包括在基底上:上述压电薄膜; 以及设置成与压电薄膜接触的一对电极。
摘要:
A piezoelectric material containing a barium bismuth calcium niobate-based tungsten bronze structure metal oxide having a high degree of orientation is provided. A piezoelectric element, a liquid discharge head, an ultrasonic motor, and a dust cleaning device including the piezoelectric material are also provided. The piezoelectric material includes a tungsten bronze structure metal oxide that includes metal elements which are barium, bismuth, calcium, and niobium; and tungsten. The metal elements satisfy following conditions on a molar basis: when Ba/Nb=a, 0.37≦a≦0.40, when Bi/Nb=b, 0.020≦b≦0.065, and when Ca/Nb=c, 0.007≦c≦0.10. The tungsten content on a metal basis is 0.4 to 2.0 parts by weight relative to 100 parts by weight of the tungsten bronze structure metal oxide. The tungsten bronze structure metal oxide has a c-axis orientation.
摘要翻译:提供了一种含有高取向度的铌酸铋铋铋钙青铜结构金属氧化物的压电材料。 还提供了一种压电元件,液体排出头,超声波马达和包括压电材料的除尘装置。 压电材料包括钨青铜结构金属氧化物,其包括钡,铋,钙和铌的金属元素; 和钨。 当Bi / Nb = b,0.020≦̸ b≦̸ 0.065,当Ca / Nb = c时,金属元素满足以下条件:当Ba / Nb = a,0.37和nlE; a≦̸ 0.40; c≦̸ 0.10。 基于金属的钨含量相对于钨青铜结构金属氧化物100重量份为0.4〜2.0重量份。 钨青铜结构金属氧化物具有c轴取向。
摘要:
A barium titanate piezoelectric ceramic having good piezoelectric properties and mechanical strength and a piezoelectric element that includes the ceramic are provided. A method for making a piezoelectric ceramic includes forming a compact containing barium titanate particles, sintering the compact, and decreasing the temperature of the compact. The sintering includes (A) increasing the temperature of the compact to a temperature range of a shrinking process of the compact; (B) increasing the temperature of the compact to a temperature range of a liquid phase sintering process of the compact; (C) decreasing the temperature of the compact to the temperature range of the shrinking process of the compact; and (D) retaining the third temperature.
摘要:
A piezoelectric material including a barium bismuth niobate-based tungsten bronze structure metal oxide having a high degree of orientation is provided. A piezoelectric element, a liquid discharge head, an ultrasonic motor, and a dust cleaning device including the piezoelectric material are also provided. A piezoelectric material includes a tungsten bronze structure metal oxide that includes metal elements which are barium, bismuth, and niobium, and tungsten. The metal elements satisfy following conditions on a molar basis: when Ba/Nb=a, 0.30≦a≦0.40, and when Bi/Nb=b, 0.012≦b≦0.084. The tungsten content on a metal basis is 0.40 to 3.00 parts by weight relative to 100 parts by weight of the tungsten bronze structure metal oxide. The tungsten bronze structure metal oxide has a c-axis orientation.
摘要翻译:提供了包括具有高取向度的铌酸铋铋基钨青铜结构金属氧化物的压电材料。 还提供了一种压电元件,液体排出头,超声波马达和包括压电材料的除尘装置。 压电材料包括钨青铜结构金属氧化物,其包括钡,铋和铌的金属元素和钨。 金属元素以摩尔为基准满足以下条件:当Ba / Nb = a,0.30≦̸ a≦̸ 0.40,当Bi / Nb = b时,0.012< lE; b≦̸ 0.084。 基于金属的钨含量相对于钨青铜结构金属氧化物100重量份为0.40〜3.00重量份。 钨青铜结构金属氧化物具有c轴取向。
摘要:
A compound having a tungsten bronze structure exhibiting a high Curie temperature, good insulating resistance and mechanical quality factor, and excellent piezoelectric properties is provided. The compound contains a tungsten bronze structure oxide represented by general formula (1): x(BaB2O6)-y(CaB2O6)-z{(Bi1/2C1/2)B2O6} (1) where B represents at least one of Nb and Ta; C represents at least one of Na and K; x+y+z=1; x satisfies 0.2≦x≦0.85; y satisfies 0≦y≦0.5; and z satisfies 0
摘要翻译:提供了具有高居里温度,良好的绝缘电阻和机械品质因数以及优异的压电性能的钨青铜结构的化合物。 该化合物含有由通式(1)表示的钨青铜结构氧化物:x(BaB 2 O 6)-y(CaB 2 O 6)-z {(Bi1 / 2C1 / 2)B2O6}(1)其中B表示Nb和Ta中的至少一种 ; C表示Na和K中的至少一种; x + y + z = 1; x满足0.2≦̸ x≦̸ 0.85; y满足0≦̸ y≦̸ 0.5; z满足0
摘要:
A barium titanate piezoelectric ceramic having good piezoelectric properties and mechanical strength and a piezoelectric element that includes the ceramic are provided. A method for making a piezoelectric ceramic includes forming a compact composed of an oxide powder containing barium titanate particles, sintering the compact, and decreasing the temperature of the compact after the sintering. The sintering includes (A) increasing the temperature of the compact to a first temperature within a temperature range of a shrinking process of the compact; (B) increasing the temperature of the compact to a second temperature within a temperature range of a liquid phase sintering process of the compact after (A); (C) decreasing the temperature of the compact to a third temperature within the temperature range of the shrinking process of the compact after (B); and (D) retaining the third temperature after (C).