Abstract: There are provided a dielectric ceramic having large specific resistance and even capacitance characteristic at 150° C., as well as a laminated ceramic electronic component employing such a dielectric ceramic. A ceramic layer includes crystal grains, the ceramic layer containing a perovskite type compound containing Ba, Ca, Ti, and Zr, containing Si, and optionally containing Mn. When the total content of Ti and Zr is 1 molar part, the content of Mn is 0.015 molar part or less, the content of Si is 0.005 molar part or more and less than 0.03 molar part, the molar ratio x of Ca/(Ba+Ca) satisfies 0.05<x<0.20, and the molar ratio y of Zr/(Ti+Zr) satisfies 0.03<y<0.18. The crystal grains have an average grain size of less than 130 nm.

Abstract: A laminate body includes a plurality of ceramic layers and capacitor conductors embedded in the laminate body so as to be opposed to each other via one of the ceramic layers. The capacitor conductors are made of an Al-based material, and the capacitor conductors include narrow portions, respectively, which function as fuse elements. The narrow portions have an average width smaller than an average width of portions of the capacitor conductors other than the narrow portions. As a result, the electronic component has an improved capability to protect its function as a capacitor when a short circuit occurs between capacitor conductors.

Abstract: Provided in a dielectric ceramic having flat capacitance characteristics and a high dielectric constant, and a multilayer ceramic electronic component (such as a multilayer ceramic capacitor) in which the dielectric ceramic is used. A multilayer ceramic capacitor includes a multilayer body having a plurality of dielectric ceramic layers and a plurality of internal electrodes, and external electrodes formed on the multilayer body. The composition of the multilayer body includes any of a bismuth layered compound containing Sr, Bi and Ti, a bismuth layered compound containing Sr, Bi and Nb, and a bismuth layered compound containing Ca, Bi and Ti as a primary ingredient, Bi and at least one of Cu, Ba, Zn and Li, and satisfies the conditions that if the Ti content is 400 molar parts or the Nb content is 200 molar parts, then (Bi content-Ti content) or (Bi content-Nb content) is equal to or greater than 1 molar part and less than 7.

Abstract: A dielectric ceramic that can be sintered at a sufficiently low temperature and has a desired specific resistance at a high temperature, and a multilayer ceramic electronic component (a multilayer ceramic capacitor and the like) using the dielectric ceramic are provided. The multilayer ceramic capacitor includes a multilayer body having a plurality of laminated dielectric ceramic layers, and a plurality of internal electrodes at interfaces between the dielectric ceramic layers; and external electrodes 8 and 9 on outer surfaces of the multilayer body. The composition of the multilayer body includes a perovskite-type compound containing Ba and Ti (where a part of Ba may be substituted by Ca, and a part of Ti may be substituted by Zr) as a primary ingredient, and further includes M (where M is at least one of Cu, Zn, Li, K, and Na) and Bi. The total content of M and Bi is equal to or greater than 3 molar parts when the total content of Ti and Zr is 100 molar parts.

Abstract: A multilayer ceramic capacitor includes a multilayer body including a plurality of laminated dielectric layers and a plurality of internal electrodes arranged along interfaces between the dielectric layers, and a plurality of external electrodes located on an outer surface of the multilayer body and electrically connected to the internal electrodes. A main component of the internal electrodes is Ni, and the internal electrodes also contain Sn.

Abstract: A laminated ceramic electronic component having excellent mechanical characteristics and internal electrode corrosion resistance, high degree of freedom in ceramic material design, low cost, and low defective rate includes a laminate having a plurality of laminated ceramic layers and a plurality of Al/Cu alloy-containing internal electrodes at specific interfaces between ceramic layers; where the Al/Cu ratio of the Al/Cu alloy is 80/20 or more.

Abstract: Provided is a laminated ceramic electronic component which has excellent mechanical characteristics, internal electrode corrosion resistance, high degree of ceramic material design freedom, low cost, low defective rate and various properties. It includes a laminate of a plurality of laminated ceramic layers and a plurality of internal electrodes at specific interfaces between ceramic layers. The internal electrodes contain an Al/Mg alloy in which the Al/Mg ratio is 65/35 or more.

Abstract: Provided are a dielectric ceramic composition suitable for use in a monolithic ceramic capacitor that is employed in high-temperature environments such cars, and a monolithic ceramic capacitor constituted by using the dielectric ceramic composition. The dielectric ceramic composition has a composition formula of 100(Ba1-xCax)TiO3+aR2O3+bV2O5+cZrO2+dMnO (where R is at least one metal element selected from among Y, La, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm and Yb, and a, b, c and d denote values in terms of moles), and conditions of 0.03?x?0.20, 0.05?a?3.50, 0.22?b?2.50, 0.05?c?3.0, and 0.01?d?0.30 are substantially satisfied. The dielectric ceramic layers in the monolithic ceramic capacitor are made of a sintered compact of the dielectric ceramic composition.

Abstract: Provided is a laminated ceramic electronic component which has excellent mechanical characteristics, internal electrode corrosion resistance, high degree of freedom in ceramic material design, low cost, low defective rate, and various properties. The laminated ceramic electronic component includes: a laminate which has a plurality of laminated ceramic layers and Al/Si alloy-containing internal electrodes at a plurality of specific interface between ceramic layers; and an external electrode formed on the outer surface of the laminate, wherein the Al/Si ratio of the Al/Si alloy is 85/15 or more.

Abstract: There is provided a dielectric ceramic composition suitable for, for example, a car-mounted monolithic ceramic capacitor used in a high-temperature environment. It is represented by the composition formula: 100(Ba1-xCax)mTiO3+aMgO+bV2O5+cSiO2+dR2O3 wherein R represents at least one metal element selected from Y, La, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb; and a, b, c, and d each represent a moles. The dielectric ceramic composition satisfying the requirements of 0.03?x?0.20, 0.99?m?1.03, 0.10?a?5.0, 0.025?b?2.5, 0.20?c?8.0, and 2.5?d<3.5. Dielectric ceramic layers in a monolithic ceramic capacitor are formed of a sintered body of the dielectric ceramic composition.

Abstract: Provided is a laminated ceramic electronic component which has excellent mechanical characteristics, internal electrode corrosion resistance, high degree of freedom in ceramic material design, low cost, low defective rate, and various properties. The laminated ceramic electronic component includes: a laminate which has a plurality of laminated ceramic layers and Al/Mn alloy internal electrodes at a plurality of specific interfaces between the ceramic layers and an external electrode formed on the outer surface of the laminate, wherein the Al/Mn ratio of the Al/Mn alloy is 80/20 or more.

Abstract: Provided is a laminated ceramic electronic component which has excellent mechanical characteristics, internal electrode corrosion resistance, high degree of ceramic material design freedom, low cost, low defective rate and various properties. It includes a laminate of a plurality of laminated ceramic layers and a plurality of internal electrodes at specific interfaces between ceramic layers. The internal electrodes contain an Al/Mg alloy in which the Al/Mg ratio is 65/35 or more.

Abstract: A laminated ceramic electronic component having excellent mechanical characteristics and internal electrode corrosion resistance, high degree of freedom in ceramic material design, low cost, and low defective rate includes a laminate having a plurality of laminated ceramic layers and a plurality of Al/Cu alloy-containing internal electrodes at specific interfaces between ceramic layers; where the Al/Cu ratio of the Al/Cu alloy is 80/20 or more.

Abstract: Provided is a laminated ceramic electronic component which has excellent mechanical characteristics, internal electrode corrosion resistance, high degree of freedom in ceramic material design, low cost, low defective rate, and various properties. The laminated ceramic electronic component includes a laminate which has a plurality of laminated ceramic layers and internal electrodes formed along at a plurality of specific interface between the ceramic layers and having an Al/Ti alloy as a component; and an external electrode formed on the outer surface of the laminate. The Al/Ti ratio of the Al/Ti alloy is 91/9 or more.

Abstract: Provided is a laminated ceramic electronic component having excellent mechanical characteristics, internal electrode corrosion resistance, high degree of freedom in ceramic material design, low cost, low defective rate, and various properties. The laminated ceramic electronic component includes: a laminate which has a plurality of laminated ceramic layers and internal electrodes at a plurality of specific interfaces between the ceramic layers and having an Al/Ni alloy as a component; and an external electrode formed on the outer surface of the laminate, wherein the Al/Ni ratio of the Al/Ni alloy is 85/15 or more.

Abstract: A dielectric ceramic for use in dielectric ceramic layers has a main component represented by a composition formula of (Sr1-x-ySnxBay)TiO3, wherein x is 0.005?x?0.24, y is 0?y?0.25 in the composition formula. Preferably, the dielectric ceramic includes 0.01 mol to 5 mol of M (M is at least one of Mn and V) calculated as MO and/or 0.2 mol to 5 mol of Si calculated as SiO2, with respect to 100 mols of the main component, and more preferably, further includes 0.1 mol to 25 mol of Ca calculated as CaO with respect to 100 mols of the main component. The dielectric ceramic has an increased dielectric constant permitting size reduction when used in a laminated ceramic capacitor.

Abstract: A dielectric ceramic which is suitable for use in a laminated ceramic capacitor under a high-temperature environment, such as encountered in, for example, automobile use has a composition represented by the composition formula: (1?x) (Ba1-yCay)mTiO3+xCaTiO3+aRe2O3+bMgO+cMnO+dV2O3+eSiO2 in which Re is Gd, Dy, Y, Ho, and/or Er), 0.001?x?0.02, 0.08?y?0.20, 0.99?m?1.05, 0.01?a?0.04, 0.005?b?0.035, 0?c?0.01, 0?d?0.01, 0.01?e?0.04 when a, b, c, d, and e are each expressed in terms of parts by mol with respect to 1 mol of (1?x) (Ba,Ca)TiO3+xCaTiO3. This dielectric ceramic can constitute the dielectric ceramic layers of a laminated ceramic capacitor.

Abstract: A dielectric ceramic with stable insulation properties even after calcination under a reducing atmosphere, as is preferred for a laminated ceramic capacitor, is a CaTiO3 composition containing Sn. It is preferable for the dielectric ceramic to contain, as its main component, (Ca1-xBaxSny)TiO3 (0?x<0.2, 0.01?y<0.2) with a solution of Sn at the B site.

Abstract: Provided are a dielectric ceramic composition suitable for use in a monolithic ceramic capacitor that is employed in high-temperature environments such cars, and a monolithic ceramic capacitor constituted by using the dielectric ceramic composition. The dielectric ceramic composition has a composition formula of 100(Ba1-xCax)TiO3+aR2O3+bV2O5+cZrO2+dMnO (where R is at least one metal element selected from among Y, La, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm and Yb, and a, b, c and d denote values in terms of moles), and conditions of 0.03?x?0.20, 0.05?a?3.50, 0.22?b?2.50, 0.05?c?3.0, and 0.01?d?0.30 are substantially satisfied. The dielectric ceramic layers in the monolithic ceramic capacitor are made of a sintered compact of the dielectric ceramic composition.

Abstract: There is provided a dielectric ceramic composition suitable for, for example, a car-mounted monolithic ceramic capacitor used in a high-temperature environment. It is represented by the composition formula: 100(Ba1-xCax)mTiO3+aMgO+bV2O5+cSiO2+dR2O3 wherein R represents at least one metal element selected from Y, La, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb; and a, b, c, and d each represent a moles. The dielectric ceramic composition satisfying the requirements of 0.03?x?0.20, 0.99?m?1.03, 0.10?a?5.0, 0.025?b?2.5, 0.20?c?8.0, and 2.5?d<3.5. Dielectric ceramic layers in a monolithic ceramic capacitor are formed of a sintered body of the dielectric ceramic composition.