Abstract: The invention intends to provide, in BaTiO3 semiconductor porcelain composition, a semiconductor porcelain composition that, without using Pb, can shift the Curie temperature to a positive direction and can significantly reduce the resistivity at room temperature. According to the invention, when Ba is partially substituted by an A1 element (at least one kind of Na, K and Li) and an A2 element (Bi) and Ba is further substituted by a specific amount of a Q element, or when Ba is partially substituted by an A1 element (at least one kind of Na, K and Li) and an A2 element (Bi) and Ti is partially substituted by a specific amount of an M element, the optimal valence control can be applied and whereby the resistivity at room temperature can be significantly reduced. Accordingly, it is optimal for applications in a PTC thermistor, a PTC heater, a PTC switch, a temperature detector and the like, and particularly preferably in an automobile heater.

Abstract: An antiferroelectric ceramic material that can be formed into a multilayer capacitor is disclosed. The antiferroelectric ceramic material is selected from the Pb(Sn, Zr, Ti)O3 (PSnZT) composition family.

Abstract: A laminated ceramic capacitor is provided which is excellent in reliability even when its dielectric ceramic layers thinned. For a dielectric ceramic in a laminated ceramic capacitor, a ceramic is used which includes a main component containing a barium titanate based composite oxide represented by the general formula: (Ba1-h-m-xCahSrmRex)k(Ti1-n-yZrnMy)O3, where Re is La or the like, M is Mg or the like, and the respective relationships of 0.05?x?0.50, 0.02?y?0.3, 0.85?k?1.05, 0?h?0.25, 0?m?0.50, and 0?n?0.40 are satisfied; and an accessory component as a sintering aid, wherein the average grain diameter of crystal grains in a sintered body is 0.6 ?m or less.

Abstract: A furnace assembly includes first and second sections. The first section includes first and seconds ends, a first joint disposed at the first end, a conical portion at a second end, a first filter disposed between the first and second ends, and a lumen extending through the first section in fluid communication with the first filter. The second section includes first and second ends, a second joint disposed at the first end, an opening disposed at the second end and to receive the conical portion of the first section, a second filter disposed between the first and second ends, and a lumen extending through the second section in fluid communication with the second filter. When engaged, the first and second sections form a chamber between the first and second filters. The chamber is in fluid communication with the respective first ends of the first and second sections.

Abstract: The invention intends to provide, in BaTiO3 semiconductor porcelain composition, a semiconductor porcelain composition that, without using Pb, can shift the Curie temperature to a positive direction and can significantly reduce the resistivity at room temperature. According to the invention, when Ba is partially substituted by an A1 element (at least one kind of Na, K and Li) and an A2 element (Bi) and Ba is further substituted by a specific amount of a Q element, or when Ba is partially substituted by an A1 element (at least one kind of Na, K and Li) and an A2 element (Bi) and Ti is partially substituted by a specific amount of an M element, the optimal valence control can be applied and whereby the resistivity at room temperature can be significantly reduced. Accordingly, it is optimal for applications in a PTC thermistor, a PTC heater, a PTC switch, a temperature detector and the like, and particularly preferably in an automobile heater.

Abstract: An antiferroelectric ceramic material that can be formed into a multilayer capacitor is disclosed. The antiferroelectric ceramic material is selected from the Pb(Sn, Zr, Ti)O3 (PSnZT) composition family.

Abstract: The invention intends to provide, in BaTiO3 semiconductor porcelain composition, a semiconductor porcelain composition that, without using Pb, can shift the Curie temperature to a positive direction and can significantly reduce the resistivity at room temperature. According to the invention, when Ba is partially substituted by an A1 element (at least one kind of Na, K and Li) and an A2 element (Bi) and Ba is further substituted by a specific amount of a Q element, or when Ba is partially substituted by an A1 element (at least one kind of Na, K and Li) and an A2 element (Bi) and Ti is partially substituted by a specific amount of an M element, the optimal valence control can be applied and whereby the resistivity at room temperature can be significantly reduced. Accordingly, it is optimal for applications in a PTC thermistor, a PTC heater, a PTC switch, a temperature detector and the like, and particularly preferably in an automobile heater.

Abstract: A dielectric ceramic represented by a general formula: 100BamTiO3+aROn+bMOv+cXOw (where R represents a rare earth element, M represents a predetermined metal element, and n, v, and w represent independently a positive number determined in accordance with the valences of the elements R and M and a sintering aid component X, respectively), and the solid solution regions of the secondary components in the main phase grains are 10% or less (including 0%) on average in terms of a cross-sectional area ratio. The sintering aid component X contains at least Si, and m, a, b, and c satisfy 0.995?m?1.030, 0.1?a?2.0, 0.1?b?3.0, and 0.1?c?5.0. In a monolithic ceramic capacitor, dielectric layers are formed from the above-described dielectric ceramic.

Abstract: The present invention relates to a dielectric ceramic composition comprising BaTiO3, BaZrO3, and the oxide of R wherein, when A is the content of BaZrO3, and C is the content of the oxide R, with respect to 100 moles of BaTiO3, then A is 40?A?65 moles and C is 4?C?15 moles; plus said dielectric composition satisfies the equation (1) and (2). The present invention can provide a dielectric ceramic composition good in IR lifetime, and capable to be suitably used for medium-high voltage which has a high rated voltage (for example, 100V or more). 0.0038A?0.147?B?0.004A+0.04??Equation (1) (note that, B is a ratio of the X-ray diffraction maximum intensity among peaks of said BaZrO3 with respect to the X-ray diffraction maximum intensity among peaks of said BaTiO3). 0.0041C?0.0115?D?0.0046C+0.084??Equation (2) (note that, D is a ratio of the X-ray diffraction maximum intensity among peaks of the oxide of said R with respect to the X-ray diffraction maximum intensity among peaks of said BaTiO3).

Abstract: A dielectric ceramic composition containing at least 0.15 to 2.5 mol of a Mg compound in terms of MgO, 0 to 1.6 mol of a Ba compound in terms of BaCO3, 0.1 to 3.0 mol of a Ln (Ln includes two or three kinds of elements selected from Er, Dy, and Ho with Er being essential) compound in terms of Ln2O3, 0.01 to 0.4 mol of a Mn compound in terms of MnO4/3, 0.01 to 0.26 mol of a V compound in terms of V2O5, 0.3 to 3.5 mol of a Si compound in terms of SiO2, and 0.01 to 2.5 mol of an Al compound in terms of Al2O3 to 100 mol of barium titanate adjusted for a Ba/Ti molar ratio of 0.997 to 1.007.

Abstract: The present invention provides a dielectric porcelain composition comprising 100 parts by weight of a barium titanate-based dielectric material and 4 to 10 parts by weight in total of Bi2O3 and at least one compound selected from the group of consisting of CuO, ZnO and MgO.

Abstract: An antiferroelectric ceramic material that can be formed into a multilayer capacitor is disclosed. The antiferroelectric ceramic material is selected from the Pb(Sn, Zr, Ti)O3 (PSnZT) composition family.

Abstract: A dielectric ceramic which improves the lifetime characteristics and dielectric breakdown voltage of a laminated ceramic capacitor includes core-shell crystalline grains which have a core-shell structure and homogeneous crystalline grains which have a homogeneous structure. In this dielectric ceramic, the core-shell crystalline grains and the homogeneous crystalline grains are present at an area ratio in the range of 91:9 to 99:1. Preferably, when the mean grain size for the core-shell crystalline grains is represented by R1 and the mean grain size for the homogeneous crystalline grains is represented by R2, the ratio of R2/R1 is 0.8 or more and 3 or less.

Abstract: A dielectric ceramic-forming composition capable of being sintered at a temperature lower than that in the known art and to be formed into a dielectric ceramic material having a high dielectric constant; and a dielectric ceramic material obtained from the dielectric ceramic-forming composition are provided. The dielectric ceramic-forming composition includes a perovskite (ABO3) ceramic material powder having an average particle size of 0.01 to 0.5 ?m and a glass powder having an average particle size of 0.1 to 5 ?m, wherein the content of the glass powder is 3 to 12 percent by weight. The perovskite (ABO3) ceramic material powder is preferably a perovskite (ABO3) ceramic material powder prepared by a wet reaction.

Abstract: A dielectric ceramic composition of the invention comprises: BaTiO3 as a main component, MgO: 0.50 to 3.0 moles, MnO: 0.05 to 0.5 moles, oxide (RE12O3) of element selected from Sm, Eu, and Gd, oxide (RE22O3) of element selected from Tb and Dy, oxide (RE32O3) of element selected from Y, Ho, Er, Yb, Tm and Lu, BaZrO3: 0.20 to 1.0 moles, and oxide of element selected from V, Ta, Mo, Nb, and W: 0.05 to 0.25 moles as subcomponents wherein each subcomponent is calculated as a conversion of an oxide or composite oxide, with respect to 100 moles of the main component, and contents of said RE12O3, RE22O3 and RE32O3 satisfy RE12O3<RE22O3 and (RE12O3+RE22O3)?RE32O3.

Abstract: Multilayer ceramic chip capacitors which satisfy X8R requirements and which are compatible with reducing atmosphere sintering conditions so that non-noble metals such as nickel and nickel alloys thereof may be used for internal and external electrodes are made in accordance with the invention. The capacitors exhibit desirable dielectric properties (high capacitance, low dissipation factor, high insulation resistance), excellent performance on highly accelerated life testing, and very good resistance to dielectric breakdown. The dielectric layers comprise a barium titanate base material doped with other metal oxides such as BaO, Y2O3, ZrO2, SiO2, MgO, MnO, MoO3, CaO, Lu2O3, Yb2O3, or WO3 in various combinations.

Abstract: Composite materials are disclosed having low filler percolation thresholds for filler materials into the composite matrix material along with methods of controlling filler interconnectivity within the composite matrix material. Methods are, thus, disclosed that provide the ability to control the desired properties of the composites. The composites of the present disclosure are characterized by a “pseudo-crystalline” microstructure formed of matrix particles and filler particles where the matrix particles are faceted and substantially retain their individual particle boundaries and where the filler particles are interspersed between the matrix particles at the individual matrix particle boundaries such that the filler particles form a substantially interconnected network that substantially surrounds the individual faceted matrix particles.

Abstract: A production method of a dielectric ceramic composition comprising a main component including a compound having a perovskite-type crystal structure expressed by a composition formula (Ba1-xCax) (Ti1-yZry)O3 (note that 0?x?0.2, 0?y?0.2), and a fourth subcomponent including an oxide of R (note that R is at least one selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu); comprising steps of obtaining a post-reaction material by bringing a material of the main component to react in advance with a part of a material of the fourth subcomponent to be included in the dielectric ceramic composition, and adding rest of material of the fourth subcomponent to be included in the dielectric ceramic composition into the post-reaction material. According to the present invention, both of a dielectric ceramic composition capable of improving the specific permittivity and a temperature characteristic of capacitance can be preferable, and the production method can be provided.

Abstract: A dielectric ceramic comprising a barium titanate as a main component and a capacitor comprising the dielectric ceramic are disclosed. The dielectric ceramic has a high dielectric constant that is stable over temperature, and has a small spontaneous polarization. The capacitor can reduce audible noise caused by an electrically induced strain in a power supply circuit.

Abstract: A production method of a dielectric ceramic composition comprising a main component including barium titanate expressed by a composition formula of BamTiO2+m, wherein “m” satisfies 0.990<m<1.010, a fourth subcomponent including an oxide of R (note that R is at least one selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu), and other subcomponent including at least BaO; comprising steps of preparing a post-reaction material by bringing a material of said main component to react in advance with at least a part of a material of said fourth subcomponent, wherein, when an amount of BaO included in said other subcomponent is n mole with respect to 100 moles of said main component, and said main component and said BaO are expressed by a composition formula of Bam+n/100TiO2+m+n/100, wherein “m” and “n” satisfy 0.994<m+n/100<1.

Abstract: There is provided a dielectric ceramic composition that is a dielectric ceramic material used for a laminated ceramic capacitor; that can be co-fired with internal electrodes mainly composed of Ni at a temperature of 1300° C. or less; and that has a high dielectric constant, good temperature characteristics of capacitance in a range of ?55 to 175° C., and a high resistivity ? at 175° C. The dielectric ceramic composition includes a main component represented by a composition formula (1?a) (K1?xNax)(Sr1?y?zBayCaz)2Nb5O15-a(Ba1?bCab)TiO3 (where a, b, x, y, and z are all molar amounts and 0.3?a?0.8, 0?b?0.2, 0?x<0.2, 0.1?y?0.5, 0.1?z?0.5, and 0.2?y+z?0.7); and M, as an additional component, in an amount of 0.1 to 40 parts by mole relative to 100 parts by mole of the main component (where M is at least one element from the group of V, Mn, Cr, Fe, Co, Ni, Zn, Mg, and Si).

Abstract: The invention relates to a glass composition and a glass frit adequate for low temperature sintering agent at 1,100° C. or less, and a dielectric composition and a multilayer ceramic capacitor using the same. The glass composition comprises aLi2O-bK2O-cCaO-dBaO-eB2O3-fSiO2, in which a, b, c, d, e and f satisfy following relationships: a+b+c+d+e+f=100, 2?a?10, 2?b?10, 0?c?25, 0?d?25, 5?e?20, and 50?f?80.

Abstract: A production method of a dielectric ceramic composition comprising a main component including at least one selected from BaTiO3, BaCaTiO3, BaTiZrO3 and BaCaTiZrO3, and a fourth subcomponent including rare earth oxide; comprising steps of dividing a material of the main component to a first main component material and a second main component material, obtaining a post-reaction material by making the material of the first main component react in advance with a part of the fourth subcomponent material, and adding the material of the second main component and rest of the fourth subcomponent material into the post-reaction material; wherein, when number of moles of the first main component is n1 and number of moles of the second main component is n2, a ratio is 0.5?n1/(n1+n2)?1: by which preferable characteristic can be obtained even when dielectric layers are made thin.

Abstract: The present invention provides a highly dielectric elastomer composition which shows a high dielectric constant in a wide temperature range from low to high temperature and has a low dielectric loss tangent, and a dielectric antenna composed of the highly dielectric elastomer composition. A dielectric antenna including a molding of a highly dielectric elastomer composition composed of an elastomer and a highly dielectric ceramic powder mixed with the elastomer and an electrode formed on the molding. The highly dielectric ceramic powder of barium titanate.neodymium ceramic has a temperature coefficient ?(unit: 1/° C.) of a dielectric constant of the ceramic powder on 25° C. standard ranging from ?200×10?6 to 100×10?6 over a temperature range from ?40° C. to 100° C. The dielectric constant of the highly dielectric elastomer composition is ?7 and a dielectric loss tangent thereof is ?0.01.

Abstract: Sintered, spherical composite pellets or particles comprising alumina fines, at least one of clay and bauxite and optionally a sintering aid, are described, along with a process for their manufacture. The use of such pellets in hydraulic fracturing of subterranean formations and in grinding is also described.

Abstract: A dielectric ceramic contains a barium titanate and Li. In the dielectric ceramic, the following inequalities are satisfied: 0.5?e?6.0, 0.06<Rg<0.17, and ?g<0.075, where e is the content, in molar parts, of Li with respect to 100 molar parts of the titanate; Rg is the average size, in ?m, of grains in the dielectric ceramic; and ?g is the standard deviation, in ?m, of the size of the grains.

Abstract: The present invention relates to a dielectric ceramic composition comprising a main component expressed by a general formula: (Ba1-x-ySrxCay)m(Ti1-zZrz)O3, a first subcomponent comprising Mg oxide, a second subcomponent comprising at least one kind of oxide selected from oxides of Mn and Cr, a third subcomponent comprising R oxide (note R is selected at least one kind from Y, La Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho and Yb), and a fourth subcomponent comprising an oxide including Si.

Abstract: A dielectric porcelain composition here contains as main components BaO, Nd2O3, TiO2, MgO and SiO2 at the given ratios and as subordinate components ZnO, B2O3, CuO and an alkaline earth metal oxide RO (R: an alkaline earth metal) at given ratios, preferably with the addition of Ag as an optional subordinate component, so that it can have low-temperature sintering capability stable and reliable enough to permit a conductor formed of Ag, an alloy containing Ag as a main component or the like to be used as an internal conductor.

Abstract: Provided are a dielectric composition and a ceramic electronic component including the same. The dielectric composition includes (a) barium titanate having a specific surface area of 2.5 m2/g to 6.0 m2/g; (b) a mixture containing at least one or more materials selected from the group consisting of any one oxide of Mg, Ca, Sr, Ba and Zr, and any one carbide thereof; (c) oxide containing at least one or more materials selected from the group consisting of Sc, Y, La, Ac, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; (d) oxide containing at least one or more material selected from the group consisting of Cr, Mn, Fe, Co, and Ni; (e) oxide containing at least one or more material selected from the group consisting of V, Nb, and Ta; and (f) oxide containing at least one or more material selected from the group consisting of Si and Al. The dielectric composition can satisfy X8R characteristic, can be sintered at a low temperature, and can obtain high reliability.

Abstract: A multilayer ceramic capacitor includes a plurality of ceramic dielectric layers, a plurality of inner electrode layers and and external electrodes. The ceramic dielectric layers includes barium titanate crystal grains having pores inside. The inner electrode layers are between the ceramic dielectric layers. The external electrodes are electrically connected to the inner electrode layers. The barium titanate crystal grains each have a core-shell structure which include a core and a shell around the core. The the pores are mainly formed in the cores.

Abstract: A low temperature sinterable dielectric ceramic composition is obtained by bending 2.5-20 parts by weight of a glass component per 100 parts by weight of an aggregate of dielectric particles which are composed of Ti-containing dielectric material and contain an oxide including Ti and Zn in the surface portions. A low temperature sintered dielectric ceramic is produced by sintering this low temperature sinterable dielectric ceramic composition at 880 to 1000° C. With this low temperature sinterable dielectric ceramic composition, there can be obtained a multiplayer electronic component having an internal conductor composed of Ag, Cu or an alloy containing at least one of them.

Abstract: A dielectric ceramic contains a barium titanate compound oxide as a main component; at least one rare earth element R selected from Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; Mg; and Ni, such that a crystalline compound oxide containing the rare earth element R, Ni, and Ti as main components is present. Dielectric ceramic layers are made of the dielectric ceramic. Accordingly, even when a higher electric field is continuously applied under a high-temperature atmosphere for a long time, high reliability can be ensured.

Abstract: A dielectric ceramic and a capacitor comprising the dielectric ceramic are disclosed. The dielectric ceramic has a high dielectric constant that is stable over temperature, and has a small spontaneous polarization. The capacitor can reduce audible noise caused by an electrically induced strain in a power supply circuit.

Abstract: A production method of a dielectric ceramic composition, comprising a main component comprised of barium titanate, a fourth subcomponent comprised of an oxide of R1 (note that R1 is at least one kind selected from a first element group composed of rare earth elements having a value of effective ionic radius for coordination number 9 of less than 108 pm) and a fifth sub component comprised of an oxide of R2 (note that R2 is at least one kind selected from a second element group composed of rare earth elements having a value of effective ionic radius for coordination number 9 of 108 pm to 113 pm); comprising the steps of obtaining a post-reaction material by bringing the main component material reacting with a part of the fourth subcomponent material and/or a part of the fifth subcomponent material, and adding remaining materials of the fourth subcomponent and the fifth subcomponent to be included in the dielectric ceramic composition to the post-reaction material; wherein a ratio M1/M2 of the number of moles M

Abstract: The invention relates to a glass composition and a glass frit adequate for low temperature sintering agent at 1,100° C. or less, and a dielectric composition and a multilayer ceramic capacitor using the same. The glass composition comprises aLi2O-bK2O-cCaO-dBaO-eB2O3-fSiO2, in which a, b, c, d, e and f satisfy following relationships: a+b+c+d+e+f=100, 2?a?10, 2?b?10, 0?c?25, 0?d?25, 5?e?20, and 50?f?80.

Abstract: A translucent ceramic containing a main component represented by Ba{MxB1yB2z}vOw (wherein B1 is a trivalent metallic element, B2 is a quintavalent metallic element, M is at least one selected from the group consisting of Ti, Sn, Zr and Hf, x+y+z=1, 0?x?0.45, 1.00?z/y?1.04, 1.00?v?1.05, and w is a positive number required to maintain electroneutrality), or Ba{Mx(B1sB31-s)yB2z}vOw (wherein B3 is a bivalent metallic element, 0?x?0.9, 1.00?z/y?2.40, 0<s<1, and B1, B2, x+y Z and w are the same as those in the other formula). The translucent ceramic has a high refractive index, a high anomalous dispersion and excellent optical properties. The translucent ceramic is useful, for instance, as a material of an objective lens in an optical pickup.

Abstract: A dielectric ceramic including a perovskite compound represented by the general formula {(Ba1-x-yCaxSny)m(Ti1-zZrz)O3} as a primary component in which the x, y, z, and m satisfy 0.02?x?0.20, 0.02?y?0.20, 0?z?0.05, and 0.99?m?1.1 and is processed by a thermal treatment at a low oxygen partial pressure of 1.0×10?10 to 1.0×10?12 MPa. Accordingly, there are provided a dielectric ceramic which can be stably used in a high-temperature atmosphere without degrading dielectric properties, properties of which can be easily adjusted, and which generates no electrode breakage even when ceramic layers and conductive films are co-fired, and a ceramic electronic element, such as a multilayer ceramic capacitor, which uses the above dielectric ceramic.

Abstract: A dielectric porcelain composition of the present invention includes a first component and second component. If the first component is represented by the general formula of xBaO-yNd2O3-zTiO2-wBi2O3 (provided that x+y+z+w=100), x, y, z, and w satisfy 12?x?16, 12?y?16, 65?z?69, and 2?w?5, respectively. The second component includes 30 to 37 wt % of BaO, 33 to 46 wt % of SiO2, 8 to 12 wt % of La2O3, 3 to 7 wt % of Al2O3, 0 to 1 wt % of SrO, 0 to 10 wt % of Li2O, 0 to 20 wt % of ZnO, and 7 wt % or less of B203. The compounding ratio of the second component is between 10 wt % and 30 wt % when the sum of the first and second components is 100. In addition, 0.1 to 1 parts by weight of Li2O and 3 to 10 parts by weight of ZnO, relative to 100 parts by weight of the sum of the first and second components, is also contained as a third component. An average particle diameter of the dielectric mixed powder forming dielectric porcelain composition before firing is 0.9 ?m or less.

Abstract: The invention intends to provide, in BaTiO3 semiconductor porcelain composition, a semiconductor porcelain composition that, without using Pb, can shift the Curie temperature to a positive direction and can significantly reduce the resistivity at room temperature. According to the invention, when Ba is partially substituted by an A1 element (at least one kind of Na, K and Li) and an A2 element (Bi) and Ba is further substituted by a specific amount of a Q element, or when Ba is partially substituted by an A1 element (at least one kind of Na, K and Li) and an A2 element (Bi) and Ti is partially substituted by a specific amount of an M element, the optimal valence control can be applied and whereby the resistivity at room temperature can be significantly reduced. Accordingly, it is optimal for applications in a PTC thermistor, a PTC heater, a PTC switch, a temperature detector and the like, and particularly preferably in an automobile heater.

Abstract: A dielectric ceramic composition comprised of at least dielectric particles having barium titanate as its main ingredient, wherein the ratio of dielectric particles having a surface diffusion structure comprised of a main ingredient phase comprised of the main ingredient and a diffusion phase present around the main ingredient phase with respect to said dielectric particles is 60% or more and the ratio of dielectric particles having a domain in the main ingredient phase with respect to the dielectric particles having the surface diffusion structure is 20% or less. According to the present invention, a dielectric ceramic composition and electronic device realizing good high temperature accelerated life can be provided.

Abstract: Multilayer ceramic chip capacitors which satisfy X8R requirements and which are compatible with reducing atmosphere sintering conditions so that non-noble metals such as nickel and nickel alloys thereof may be used for internal and external electrodes are made in accordance with the invention. The capacitors exhibit desirable dielectric properties (high capacitance, low dissipation factor, high insulation resistance), excellent performance on highly accelerated life testing, and very good resistance to dielectric breakdown. The dielectric layers comprise a barium titanate base material doped with other metal oxides such as BaO, Y2O3, ZrO2, SiO2, MgO, MnO, MoO3, CaO, Lu2O3, Yb2O3, or WO3 in various combinations.

Abstract: A method of producing a multilayer ceramic electronic device, having a firing step for firing a pre-firing element body wherein a plurality of dielectric layers and internal electrode layers containing a base metal are alternately arranged, characterized in that the firing step has a temperature raising step for raising a temperature to a firing temperature, and hydrogen is continued to be introduced from a point in time of the temperature raising step. According to the method, it is possible to provide a method of producing a multilayer ceramic electronic device, such as a multilayer ceramic capacitor, wherein shape anisotropy and other structural defaults are hard to occur and electric characteristics are improved while suppressing deterioration thereof even if dielectric layers becomes thinner and stacked more.

Abstract: A dielectric ceramic composition for low-temperature sintering and hot insulation resistance (hot IR) is capable of carrying out low-temperature sintering, improving a hot IR characteristic, and meeting X5R characteristics, and a multilayer ceramic capacitor makes use of the dielectric ceramic composition. The dielectric ceramic composition includes a main component BaTiO3, and sub-components, based on 100 moles of the main component, MgO of 0.5 moles to 2.0 moles, Re2O3 of 0.3 moles to 2.0 moles, MnO of 0.05 moles to 0.5 moles, V2O5 of 0.01 moles to 0.5 moles, BaO of 0.3 moles to 2.0 moles, SiO2 of 0.1 moles to 2.0 moles, and borosilicate glass of 0.5 moles to 3.0 moles, where Re includes at least one selected from the group consisting of Y, Ho and Dy.

Abstract: A ceramic electronic device including a dielectric layer, wherein the dielectric layer includes a main component expressed by a composition formula of Bam TiO2+m, wherein “m” satisfies 0.995?m?1.010 and a ratio of Ba and Ti satisfies 0.995?Ba/Ti?1.010, and a subcomponent (a sixth subcomponent) including an oxide of Al; and a content of the Al compound is 0 to 4.0 moles (note that 0 is not included) in terms of Al2O3 with respect to 100 moles of the main component; and preferably, the dielectric layer includes a segregation phase, and the segregation phase includes an oxide of Al.

Abstract: A non-lead glass for forming a dielectric, which consists essentially of, as represented by mol %, from 20 to 39% of SiO2, from 5 to 35% of B2O3, from 2 to 15% of Al2O3, from 1 to 25% of CaO+SrO, from 5 to 25% of BaO, from 0 to 35% of ZnO, and from 0 to 10% of TiO2+ZrO2+SnO2, provided that B2O3+ZnO is from 15 to 45%, and which does not contain alkali metal oxides, or contains such oxides in a total amount within a range of less than 1%. Further, a glass ceramic composition for forming a dielectric, which consists essentially of a Ba-containing compound powder and a powder of the above mentioned non-lead glass for forming a dielectric. Further, a dielectric obtained by firing the above glass ceramic composition for forming a dielectric.

Abstract: A multi-layer ceramic capacitor including: a ceramic sintered body having cover layers provided on upper and lower surfaces thereof as outermost layers and a plurality of ceramic layers disposed between the cover layers; first and second internal electrodes formed on the ceramic layers, the first and second internal electrodes stacked to interpose one of the ceramic layers; first and second external electrodes formed on opposing sides of the ceramic sintered body to connect to the first and second internal electrodes, respectively; and anti-oxidant electrode layers formed between the cover layers and adjacent ones of the ceramic layers, respectively, the anti-oxidant electrode layers arranged not to affect capacitance.

Abstract: Multilayer ceramic chip capacitors which satisfy X8R requirements and which are compatible with reducing atmosphere sintering conditions so that non-noble metals such as nickel and nickel alloys thereof may be used for internal and external electrodes are made in accordance with the invention. The capacitors exhibit desirable dielectric properties (high capacitance, low dissipation factor, high insulation resistance), excellent performance on highly accelerated life testing, and very good resistance to dielectric breakdown. The dielectric layers comprise a barium titanate base material doped with other metal oxides such as BaO, Y2O3, ZrO2, SiO2, MgO, MnO, MoO3, CaO, Lu2O3, Yb2O3, or WO3 in various combinations.

Abstract: A dielectric ceramic composition having a main ingredient including a dielectric oxide expressed by the formula {(Me1-xCax)O}m.(Zr1-yTiy)O2, where the symbol Me indicating the name of the element in said formula is at least one of Sr, Mg, and Ba and where the symbols m, x, and y indicating the molar ratios of the formulation in the formula are in relationships of 0.995?m?1.020, 0<x?0.15, and 0?y?1.00, a first sub ingredient including an oxide of R (where R is a rare earth element), a second sub ingredient including an oxide of Mg, and a third sub ingredient including an oxide of Mn, wherein the ratios of the sub ingredients with respect to 100 moles of the main ingredient are first sub ingredient: 0.1 to 6 moles (value converted to oxide of R), second sub ingredient: 0.1 to 5 moles (value converted to oxide of Mg), and third sub ingredient: 0.1 to 2.

Abstract: A ceramic electronic device having a dielectric layer, wherein the dielectric layer includes a main component containing a (Ba, Ca (Ti, Zr)O3 based material and a subcomponent containing an oxide of Si; and a content of the Si oxide is 0 to 0.4 wt % (note that 0 is not included) with respect to the entire dielectric layer; and preferably the dielectric layer has a segregation phase; and the segregation phase contains an oxide of Si and substantially not containing an oxide of Li; by which it is possible to provide a ceramic electronic device, such as a multilayer ceramic capacitor, having a low IR defect rate (initial insulation resistance defect rate), excellent high temperature load lifetime and high reliability.

Abstract: A multilayer ceramic capacitor 1 having dielectric layers 2 having barium titanate or barium calcium titanate as a main ingredient. When the dielectric layers are barium titanate, the ratio of the grains having a thickness of the crystal grain boundaries 22 present between adjoining dielectric grains 20 is 30% to 95% of the plurality of dielectric grains 20 forming the dielectric layers 2. When the dielectric layers 2 are barium calcium titanate, the ratio of the grains having a thickness of the crystal grain boundaries 22 present between adjoining dielectric grains 20 is 20% to 70% of the plurality of dielectric grains 20 forming the dielectric layers 2.