摘要:
A thin-film device comprises a base electrode made of a metal, a first dielectric layer, a first inner electrode, a second dielectric layer, a second inner electrode, and a third dielectric layer. Letting T1 be the thickness of the lowermost first dielectric layer in contact with the base electrode in the plurality of dielectric layers, and Tmin be the thickness of the thinnest dielectric layer in the plurality of dielectric layers excluding the first dielectric layer, T1>Tmin. Making the first dielectric layer thicker than the thinnest, dielectric layer in the other dielectric layers can increase the distance between a metal part projecting from a metal surface because of the surface roughness of the base electrode and the inner electrode mounted on the lowermost dielectric layer, thereby reducing leakage currents.
摘要:
A thin-film device comprises a base electrode made of a metal, a first dielectric layer, a first inner electrode, a second dielectric layer, a second inner electrode, and a third dielectric layer. Letting T1 be the thickness of the lowermost first dielectric layer in contact with the base electrode in the plurality of dielectric layers, and Tmin be the thickness of the thinnest dielectric layer in the plurality of dielectric layers excluding the first dielectric layer, T1>Tmin. Making the first dielectric layer thicker than the thinnest, dielectric layer in the other dielectric layers can increase the distance between a metal part projecting from a metal surface because of the surface roughness of the base electrode and the inner electrode mounted on the lowermost dielectric layer, thereby reducing leakage currents.
摘要:
A thin-film capacitor has a high insulation resistance value with high reliability. The thin-film capacitor includes a dielectric thin film and electrodes opposing each other through the dielectric thin film, the dielectric thin film containing a perovskite-type composite oxide having a composition expressed by (1), Mn, and at least one kind of element M selected from V, Nb, and Ta; wherein the dielectric thin film has an Mn content of 0.05 to 0.45 mol with respect to 100 mol of the composite oxide; and wherein the dielectric thin film has a total element M content of 0.05 to 0.5 mol with respect to 100 mol of the composite oxide: AyBO3 (1) where A is at least one kind of element selected from Ba, Sr, Ca, and Pb, B is at least one kind of element selected from Ti, Zr, Hf, and Sn, and 0.97≦y≦0.995.
摘要:
A thin-film capacitor that is less prone to generation of internal cracking or peeling is provided. In a thin-film capacitor according to the present embodiment, because through holes H are formed in internal electrodes containing Ni as a principal component in a lamination direction, a surface area of at least some of the through holes H is in the range of 0.19 μm2 to 7.0 μm2, and a ratio of a surface area of the through holes H to a surface area of an entire main surface of the internal electrodes is in the range of 0.05% to 5%, peeling or cracking is suppressed from occurring at the boundaries between the internal electrodes and dielectric layers, and as a result, the yield is enhanced.
摘要翻译:提供了不容易产生内部开裂或剥离的薄膜电容器。 在本实施方式的薄膜电容器中,由于在层叠方向上以Ni为主要成分的内部电极形成贯通孔H,所以贯通孔H的至少一部分的表面积为0.19 m 2〜7.0mum 2,通孔H的表面积与内部电极整个表面的表面积的比例在0.05〜5%的范围内,可以抑制剥离或开裂 内部电极和电介质层之间的边界,结果提高了产率。
摘要:
It is an object of the invention to provide a process for production of a thin-film capacitor that can simultaneously achieve improved capacity density and reduced leakage current density for barium strontium titanate thin-films. There is provided a process for production of thin-film capacitors that includes a metal oxide thin-film forming step in which an organic dielectric starting material is fired to form a barium strontium titanate thin-film, wherein the firing atmosphere used is an oxygen-containing inert gas atmosphere, and the barium strontium titanate thin-film formed by the process has a larger capacity density than the capacity density of the barium strontium titanate thin-film fired in an oxygen atmosphere.
摘要:
A thin film capacitor with high capacity and low leak current is provided. The thin film capacitor includes a nickel substrate with nickel (Ni) purity of 99.99 weight percent or above, and a dielectric layer and an electrode layer disposed in this order on the nickel substrate. The thin film capacitor is typically manufactured as follows. A precursor dielectric layer is formed on a nickel substrate with nickel purity of 99.99 weight percent or above, and is subjected to annealing to form a dielectric layer. The diffusion of impurities from the nickel substrate to the precursor dielectric layer during annealing is suppressed.
摘要:
To provide a dielectric thin with a high dielectric constant, a low leakage current, and stable physical properties and electrical properties and to provide a thin film capacitor or other thin film dielectric device with a high capacitance and high reliability and a method of production of the same, a dielectric thin film containing oxides such as barium strontium titanate expressed by the formula (BaxSr(1-x))aTiO3 (0.5
摘要翻译:为了提供具有高介电常数,低漏电流和稳定物理性能和电性能的电介质薄膜,并提供具有高电容和高可靠性的薄膜电容器或其它薄膜电介质器件,以及生产的方法 相同的是,含有氧化物如钛酸锶钡的氧化物的电介质薄膜由式(Ba> Sr Sr>>(((())TiO TiO TiO TiO TiO TiO TiO TiO TiO TiO TiO TiO TiO TiO TiO TiO TiO TiO TiO (0.5
摘要:
The present invention provides a dielectric thin film whose composition is expressed by the formula (Ba1-xSrx)yTiO3 (0.18≦x≦0.45, 0.96≦y≦1.04), and whose peak intensity ratio I(100)I(110) is from 0.02 to 2.0 when I(100) is the peak intensity of the diffraction line of the (100) plane, and I(110) is the peak intensity of the diffraction line of the (110) plane in an X-ray diffraction chart of the dielectric thin film.
摘要翻译:本发明提供了一种电介质薄膜,其组成由式(Ba x 1-x x Sr x)y TiO 2 3 (100≤I≤1.0),并且当I(100)为峰强度时,峰强度比I(100)I(110)为0.02〜2.0, (100)面的衍射线和I(110)是电介质薄膜的X射线衍射图中的(110)面的衍射线的峰值强度。
摘要:
It is an object of the invention to provide a process for production of a thin-film capacitor that can simultaneously achieve improved capacity density and reduced leakage current density for barium strontium titanate thin-films. There is provided a process for production of thin-film capacitors that includes a metal oxide thin-film forming step in which an organic dielectric starting material is fired to form a barium strontium titanate thin-film, wherein the firing atmosphere used is an oxygen-containing inert gas atmosphere, and the barium strontium titanate thin-film formed by the process has a larger capacity density than the capacity density of the barium strontium titanate thin-film fired in an oxygen atmosphere.
摘要:
A dielectric device comprises a dielectric layer and first to nth metal layers (where n is an integer of 2 or greater) in contact with the dielectric layer. At least one of the first to nth metal layers contains a base metal. Interfaces between the first to nth metal layers and the dielectric layer have respective arithmetic mean roughnesses of Ra1 to Ran (nm), while an average value Ram (nm) of the arithmetic mean roughnesses of Ra1 to Ran (nm) and a thickness T (nm) of the dielectric layer satisfy T/Ram≧1.3.