摘要:
Provided is a lead-free dielectric ceramics having a low leakage current value, and a bismuth iron oxide powder as a raw material thereof. The bismuth iron oxide powder includes at least: (A) grains including a bismuth iron oxide having a perovskite-type crystal structure; (B) grains including a bismuth iron oxide having a crystal structure classified to a space group Pbam; and (C) grains including a bismuth iron oxide or a bismuth oxide having a crystal structure that is classified to a space group I23. The dielectric ceramics are made of bismuth iron oxide in which the bismuth iron oxide crystals having the crystal structure classified to the space group Pbam are distributed at a grain boundary of crystal grains of the bismuth iron oxide crystals having the perovskite-type crystal structure.
摘要:
Provided is a lead-free dielectric ceramics having a low leakage current value, and a bismuth iron oxide powder as a raw material thereof. The bismuth iron oxide powder includes at least: (A) grains including a bismuth iron oxide having a perovskite-type crystal structure; (B) grains including a bismuth iron oxide having a crystal structure classified to a space group Pbam; and (C) grains including a bismuth iron oxide or a bismuth oxide having a crystal structure that is classified to a space group I23. The dielectric ceramics are made of bismuth iron oxide in which the bismuth iron oxide crystals having the crystal structure classified to the space group Pbam are distributed at a grain boundary of crystal grains of the bismuth iron oxide crystals having the perovskite-type crystal structure.
摘要:
Provided is a piezoelectric material that achieves both high piezoelectric performance and high Curie temperature. In addition, provided are a piezoelectric element, a liquid discharge head, an ultrasonic motor, and a dust removing device, which use the piezoelectric material. The piezoelectric material includes a perovskite-type metal oxide that is expressed by the following general formula (1): xBaTiO3-yBiFeO3-zBi(M0.5Ti0.5)O3 (1), where M represents at least one type of element selected from the group consisting of Mg and Ni, x satisfies 0.25≦x≦0.75, y satisfies 0.15≦y≦0.70, z satisfies 0.05≦z≦0.60, and x+y+z=1 is satisfied.
摘要翻译:提供一种能够实现高压电性能和高居里温度的压电材料。 此外,提供了使用压电材料的压电元件,排液头,超声波马达和除尘装置。 压电材料包括由以下通式(1)表示的钙钛矿型金属氧化物:xBaTiO3-yBiFeO3-zBi(M0.5Ti0.5)O3(1),其中M表示至少一种选自 由Mg和Ni组成的组x满足0.25≦̸ x≦̸ 0.75,y满足0.15≦̸ y≦̸ 0.70,z满足0.05≦̸ z≦̸ 0.60,x + y + z = 1。
摘要:
Provided is a piezoelectric material that achieves both high piezoelectric performance and high Curie temperature. In addition, provided are a piezoelectric element, a liquid discharge head, an ultrasonic motor, and a dust removing device, which use the piezoelectric material. The piezoelectric material includes a perovskite-type metal oxide that is expressed by the following general formula (1): xBaTiO3-yBiFeO3-zBi(M0.5Ti0.5)O3 (1), where M represents at least one type of element selected from the group consisting of Mg and Ni, x satisfies 0.25≦x≦0.75, y satisfies 0.15≦y≦0.70, z satisfies 0.05≦z≦0.60, and x+y+z=1 is satisfied.
摘要翻译:提供一种能够实现高压电性能和高居里温度的压电材料。 此外,提供了使用压电材料的压电元件,排液头,超声波马达和除尘装置。 压电材料包括由以下通式(1)表示的钙钛矿型金属氧化物:xBaTiO3-yBiFeO3-zBi(M0.5Ti0.5)O3(1),其中M表示至少一种选自 由Mg和Ni组成的组x满足0.25 @ x @ 0.75,y满足0.15 @ y @ 0.70,z满足0.05 @ z @ 0.60,x + y + z = 1。
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:
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:
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:
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 transistor includes a gate electrode, a gate insulating layer, a semiconductor layer including an amorphous oxide, source-drain electrodes, and a protective layer on a substrate. The semiconductor layer includes a first region corresponding to a region in which the source-drain electrodes are formed, and a second region not corresponding to the region in which the source-drain electrodes are formed. At least the first region includes a crystalline component having a composition different from the composition of the amorphous oxide in the second region.
摘要:
It is, therefore, an object of the present invention to provide a burglarproofing alarm and particularly a pneumatic pressure burglarproofing alarm in which air pressure is detected to determine if an alarm should be issued. The burglarproofing alarm comprises a body case, a central control circuit, a sensor device and an alarm raising device disposed in the body case.