Abstract: A dielectric ceramic which is capable of achieving a laminated ceramic capacitor with high reliability, in particular, favorable lifetime characteristics in a load test, even when a dielectric ceramic layer is reduced in thickness, contains one of Ba(Ti, Mn)O3 and (Ba, Ca)(Ti, Mn)O3 as a main component, and R (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and/or Y), M (Fe, Co, V, W, Cr, Mo, Cu, Al, and/or Mg) and Si as accessory components. The area of a region in which at least one of R and M is present is 10% or less on average on a cross section of each main component grain.

Abstract: Multilayer ceramic chip capacitors which satisfy COG 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 strontium zirconate matrix doped with other metal oxides such as TiO2, MgO, B2O3, CaO, Al2O3, SiO2, and SrO in various combinations.

Abstract: A noncrystalline composite alkali metal titanate composition which is chemically stable, outstanding in resistance to hygroscopicity and suited as base materials for friction materials. The said composition comprises at least 60 wt. % of an alkali metal titanate represented by the general formula M2O.nTiO2 wherein M is one or at least two alkali metal elements and n is a number of 1 to 4, and at least 10 wt. % of SiO2, M2O/SiO2 being equal to or less than 2.5. When desired, it is possible to incorporate into the composition an oxide of at least one element selected from the group consisting of B, Mg, Al, P, Ca and Zn, and/or an oxide of at least one element selected from the group consisting of V, Cr, Mn, Fe, Co, Ni, Cu, Y, Zr, Nb and Ba.

Abstract: The invention is to provide a process for producing an aluminium titanate ceramic by firing a pre-mixture of a titania source powder, an alumina source powder and a magnesia source powder, for a short period of time. The production process of the invention comprises mixing a titania source powder and an alumina source powder followed by dry process grinding in the presence of grinding media under a grinding condition of an acceleration of at least 2G to give a pre-mixture, and firing the resulting pre-mixture. The titania source powder and the alumina source powder may be mixed together with a magnesia source powder and a silica source powder. Preferably, a vibration mill is used for the grinding. Grinding the aluminium titanate ceramic produced according to the production process of the invention gives an aluminium titanate ceramic powder.

Abstract: The invention is for obtaining aluminium titanate-based ceramics having a small BET specific surface area and having, when ground into powder, a small pore volume, by effective utilization of particulate aluminium titanate-based ceramics. A pre-mixture prepared by mixing a particulate aluminium titanate-based ceramics with a titania source and an alumina source and optionally further with a magnesia source and a silica source, or particulates of aluminium titanate-based ceramics is, as such or preferably after shaped, fired as the powder or as the molded body to produce an aluminium titanate-based ceramics.

Abstract: Dielectric ceramics represented as: CaxZrO3+aMn+bLi+cB+dSi and comprising: based on 100 mol of CaxZrO3 (where 1.00?x?1.10), 0.5?a?4.0 mol, and 6.0?b+c+d?15.0 mol, in which 0.15?b/(c+d)?0.55, and 0.20?d/c?3.30 or multi-layer ceramic capacitor using the same.

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 object of the present invention is to provide a method of production of dielectric ceramic composition which can lower the firing temperature without compensating the dielectric characteristics. The method of production according to the present invention is characterized by comprising steps of; preparing a dielectric oxide expressed by composition formula of [(CaxSr1-x)O]m[(TiyZr1-y-zHfz)O2] (x, y, z, and m in the formula are; 0.5?x?1.0, 0.01?y?0.10, 0<z?0.20 and 0.90?m?1.04 respectively), mixing, with respect to 100 parts by weight of the dielectric ceramic composition, 1 to 10 parts by weight of a sintering aid and 0.1 to 1.5 parts by weight of sodium oxide, sodium carbonate or a mixture thereof in terms of Na2O, and firing an obtained mixture; wherein said sintering aid comprises, with respect to 100 wt % of said sintering aid, 30 to 69 wt % of manganese compound in terms of MnO, 1 to 20 wt % of aluminum oxide in terms of Al2O3, and 30 to 50 wt % of silicon oxide in terms of SiO2.

Abstract: The present invention provides a sintered body of titanium compound obtained by sintering the titanium compound and a method for producing the same. A titanium compound represented by the formula (1) or (2) below is sintered. [Ca10(PO4)6]TiO3.nH2O??(1) [Ca10(PO4)6]TiO2(OH)2??(2) (In the formulae, n is an integer of from 0 to 3). The obtained sintered body substantially consists of perovskite and whitlokite.

Abstract: The present invention relates to a dielectric ceramic composition comprising a main component including at least one selected from barium titanate, strontium titanate and calcium titanate, and as a subcomponent, a glass component including an oxide of B, wherein a content of said glass component is 2 to 7 wt % with respect to 100 wt % of said main component. According to the present invention, there are provided a dielectric ceramic composition wherein a layer can be made thinner by relatively decreasing a content of the glass component, etc., as well as having good properties (specific permittivity, loss Q value and insulation resistance), and a complex electronic device such as a multilayer filter or a multilayer ceramic capacitor, which has a dielectric layer composed of the dielectric ceramic composition.

Abstract: A method of making dielectric ceramics containing mixed metal oxides is provided. The method comprises the steps of at least partially coating a metal oxide powder with a metal hydroxide or metal oxide, compacting the coated powder with one or more additional metal compounds or metal compound precursors, and directly sintering the compact in a single step. The method of the invention may be used to avoid occurrence of significant quantities of one or more undesired but thermodynamically or kinetically favored side products. The method of the invention may also be used to synthesize perovskites, in particular lead-magnesium-niobium (PMN), lead-magnesium-niobium-lead-titanium (PMN-PT) perovskites, or lead zirconate titanate (PZT).

Abstract: There is provided a high-frequency dielectric material that has a high relative permittivity, a high Q value, and a TCF property value close to zero (0) and can realize co-firing of the dielectric material with silver (Ag) and copper (Cu). The high-frequency dielectric material is characterized by comprising a composition of main constituent materials having a formulation of CaO: 1 mole, Nb2O5: (1??×?)/3 mole, ZnO: (1??)/3 mole, TiO2: ? mole, and Li2O: ?×(1??)/6 mole, wherein 0.65???0.75, 0.09???0.15, 0.066??×??0.100, and 0.15???0.35; and 1 to 5 parts by weight, based on 100 parts by weight of the composition of main constituent materials, of a sintering aid selected from the group consisting of oxides of copper (Cu), boron (B), lithium (Li), bismuth (Bi), and vanadium (V) and a mixture of two or more of the oxides.

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 composition comprising forsterite in an amount of 93.0 to 99.0 mol % when calculating in terms of 2MgO.SiO2 and calcium titanate in an amount of 1.0 to 7.0 mol % when calculating in terms of CaTiO3 as main components, and as a subcomponent, aluminum oxide in an amount of 0.2 to 5 mass % when calculating in terms of Al2O3 per 100 mass % of said main components. According to the present invention, a dielectric ceramic composition, capable of having both low permittivity and good frequency-temperature characteristic as well as ensuring high Qf value and further having sufficient mechanical strength, and suitable to use in an antenna, a filter and the like used in the high-frequency region, can be provided. Also, the present invention allows providing a dielectric ceramic composition further having resistance to reduction in addition to all of the above properties.

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: An interconnect material is formed by combining a lanthanum-doped strontium titanate with an aliovalent transition metal to form a precursor composition and sintering the precursor composition to form the interconnect material. The aliovalent transition metal can be an electron-acceptor dopant, such as manganese, cobalt, nickel or iron, or the aliovalent transition metal can be an electron-donor dopant, such as niobium or tungsten. A solid oxide fuel cell, or a strontium titanate varistor, or a strontium titanate capacitor can include the interconnect material that includes a lanthanum-doped strontium titanate that is further doped with an aliovalent transition metal.

Abstract: There is provided a low-loss microwave dielectric ceramic having a composition represented by xCaO.yLn2O3.zAl2O3.mTiO2 wherein Ln is Nd or Sm, 25.0 mole %?x?75.0 mole %, 10.0 mole %?y?30.0 mole %, 10.0 mole %?z?30.0 mole %, 0.8 mole %?m?20.0 mole %, x+y+z+m=100 mole %. It has a dielectric constant in the range from 18 to 25, an extremely large Qf value ranging from 80,000 to 200,000 GHz, and a temperature coefficient of resonant frequency tunable in the vicinity of 0. It can make the applications of dielectric resonators, filters, and antennas extended to higher frequency and larger power; it can also be applied to microwave capacitors, temperature-compensated capacitors, microwave substrates, et al.

Abstract: The present invention is directed to perovskite nanostructures of Formula ABO3, wherein A and B represent one or more metals with A having a valence lower than B, to methods of making the perovskite nanostructures of Formula ABO3 comprising their synthesis within and precipitation from reverse micelles, and the use of the perovskite nanostructures of Formula ABO3 as capacitors, and their use in dynamic random access memory, electromechanics, and non-linear optics.

Abstract: The invention intends to provide a dielectric porcelain composition for use in electronic devices, in which the relative dielectric constant ?r is high, the Qf value is high and, the temperature coefficient ?f can be controlled while maintaining the temperature coefficient ?f at the resonant frequency small and the Qf value high. According to the invention, when, in an LnAlO3—CaTiO3-based dielectric porcelain composition, a molar ratio of LnAlO3 and CaTiO2 is optimized and Al is substituted by a slight amount of Ga, a structure that has an LnAlO3—CaTiO3 solid solution as a main phase and a solid solution of Al—Ga-based oxide as a secondary phase and does not substantially contain ?-Al2O3 in the structure can be obtained, and the temperature coefficient ?f can be controlled while maintaining the temperature coefficient ?f at the resonant frequency small and the Qf value high.

Abstract: A dielectric ceramic material as claimed in claim 1 with a composition of formula x CaTiO3+(1?x)SmzRe(1?z)AlO3??(1) optionally doped with about 0.005% to about 5% of CeO2 as a dopant, wherein 0.5?x?0.9, 0.3?z?0.995, or Re may be selected from a group consisting of La, Pr, Dy, Gd, Y, Er, Ho and mixtures thereof.

Abstract: A glass-free microwave dielectric ceramic that can be sintered at low temperature, and a manufacturing method thereof are provided. The glass-free microwave dielectric ceramic composition includes a composition represented by a formula, M2+N4+B2O6, wherein M is one element of Ba, Ca and Sr, and N is one element of Sn, Zr and Ti. The M may be replaced by two elements of Ba, Ca and Sr different from each other, to form a composition represented by a formula, (M1-x2+Mx2+)N4+B2O6, wherein 0<x<1. The N may also be replaced by two elements of Sn, Zr and Ti different from each other, to form a composition represented by a formula, M2+(N1-y4+Ny4+)B2O6, wherein 0<y<1. Furthermore, it is also possible to replace both of the M and N to form a composition represented by a formula, (M1-x2+Mx2+)(N1-y4+Ny4+)B2O6, wherein 0<x<1 and 0<y<1.

Abstract: Disclosed are ceramic articles comprising a sintered phase ceramic composition containing, as expressed on a weight percent oxide basis: a(Al2TiO5)+b(ZrTiO4)+c(Y2O3)+d(YPO4) wherein “a, b, c, and d” represent weight fractions of each component such that (a+b+c+d)=1.00 and wherein 0.5<a?0.95; 0?b?0.5, 0.0?c?0.10, and 0?d?0.5. Also disclosed are precursor batch compositions and methods for manufacturing the ceramic articles disclosed herein.

Abstract: A forsterite powder with superior characteristics which can be sintered at a relatively low temperature can be economically produced, when a magnesium source, a silicon source, and copper particles are mixed to prepare a mixed powder containing 300 to 2,000 ppm by weight of the copper particles, and the mixed powder is fired. The magnesium source used is preferably Mg(OH)2, and the silicon source used is preferably SiO2. A polycrystalline forsterite powder is preferably produced. The magnesium source, the silicon source, and the copper particles can be mixed in the presence of a solvent to prepare the mixed powder. The forsterite powder preferably contains 300 to 2,000 ppm by weight of copper, has a particle size of 0.20 to 0.40 ?m and has a crystal size of 0.034 to 0.040 ?m.

Abstract: A semiconductor porcelain composition [(BiNa)x(Ba1-yRy)1-x]TiO3 with 0<x?0.2, 0<y?0.02 and R being selected from the group consisting of La, Dy, Eu, Gd or Y is prepared by separately calcining a composition of (BaR)TiO3 at a temperature of 900° C. through 1300° C. and calcining a composition of (BiNa)TiO3 at a temperature of 700° C. through 950° C., and then mixing the two calcined powders and forming and sintering the mixed calcined powder. Similarly, a semiconductor porcelain composition [(BiNa)x(Ba1-x][Ti1-zMz]O3 with 0<x?0.2, 0<z?0.005 and M being selected from the group consisting of Nb, Ta and Sb is prepared by separately calcining a composition of (BaM)TiO3 at a temperature of 900° C. through 1300° C. and calcining a composition of (BiNa)TiO3 at a temperature of 700° C. through 950° C., and then mixing the two calcined powders, and forming and sintering the mixed calcined powders.

Abstract: A method of producing a semiconductor disk represented by a composition formula [(Bi0.5Na0.5)x(Ba1?yRy)1?x]TiO3, in which R is at least one element of La, Dy, Eu, Gd and Y and x and y each satisfy 0?x?0.14, and 0.002?y?0.02 includes carrying out a sintering in an inert gas atmosphere with an oxygen concentration of 9 ppm to 1% and wherein a treatment at an elevated temperature in an oxidizing atmosphere after the sintering is not carried out.

Abstract: A piezoelectric ceramic composition includes a primary component represented by the formula (1-x)(K1-a-bNaaLib)m(Nb1-c-dTacSbd)O3-xM1nM2O3, and 0.1 to 10 moles (preferably 1.5 to 10 moles) of at least one specific element selected from the group consisting of In, Sc, Y, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, and Lu with respect to 100 moles of the primary component, wherein M1 is Ca, Sr, or Ba M2 is Ti, Zr, or Sn; and x, a, b, c, d, m, and n satisfy 0.005?x?0.1, 0?a?0.9, 0?b?0.3, 0?a+b?0.9, 0?c?0.5, 0?d?0.1, 0.9?m?1.1, and 0.9?n?1.1. Preferably, Mn, Ni, Fe, Zn, Cu, or Mg is further added. As a result, at both a very low and a high electric field, a high piezoelectric d constant can be stably obtained with a high efficiency.

Abstract: A dielectric ceramic composition in a multilayer ceramic capacitor with a composition of formula: {[(CaO)t(SrO)1-t]m[(ZrO2)v(TiO2)1-v]}1-s-xAsEx wherein: A is a transition metal oxide; E is an oxide of an element selected from the group consisting of Ge, Si, Ga and combinations thereof; m is 0.98 to 1.02; t is 0.50 to 0.90; v is 0.8 to 1.0; s and x are selected from the group consisting of: a) 0?x?0.08, 0.0001?s?0.043 and x?1.86s; and b) 0?x?0.0533, 0.0001?s?0.08 and x?0.667s.

Abstract: A pyroelectric ceramic composition contains a compound represented by (Pb1-xCax)(1+a){(Ni1/3Nb2/3)yTi(1-y)}O3 (wherein x, y, and a satisfy 0.20?x?0.27, 0.01?y?0.06, and 0.001?a?0.02, respectively) as a main component and 0.3 to 2.5 mol of Mn per 100 mol of the main component. The amount of segregates containing Ni, Ti, and Mn is 1.0 vol % or less (including 0 vol %) of a fired sinter. A pyroelectric ceramic composition that has an adequately low insulation resistance and a high Curie temperature while achieving satisfactory pyroelectric properties is realized. Since the composition has a high Curie temperature, a thin, small pyroelectric element that withstands a reflow process can be obtained. Since the composition has a low insulation resistance, an infrared detector incorporating a pyroelectric element composed of the composition does not require a load resistance to be provided in parallel to the pyroelectric element and size reduction is possible.

Abstract: A production method of a dielectric ceramic composition at least including a main component including a dielectric oxide having perovskite-type crystal structure expressed by a formula ABO3 (note that in the formula, “A” indicates one or more elements selected from Ba, Ca, Sr and Mg, and that “B” indicates one or more elements selected from Ti, Zr and Hf) comprises steps of preparing a main component material including said dielectric oxide expressed by ABO3; preparing a subcomponent material including a composite oxide expressed by M4R6O(SiO4)6 (note that “M” indicates at least one selected from Ca and Sr, and that “R” indicates at least one selected from Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu); mixing said main component material and subcomponent material to obtain a dielectric ceramic composition material; and firing said dielectric ceramic composition material.

Abstract: A composition for ceramic extrusion-molded bodies includes a ceramic material, a water-soluble cellulose ether, a styrenesulfonate and water. A method for manufacturing a ceramic extrusion-molded body using the composition is also provided.

Abstract: The invention intends to provide a dielectric porcelain composition for use in electronic devices, which has the dielectric characteristics such that the Qf value is high, the temperature coefficient ?f of a resonant frequency is small and a value thereof can be controlled in a wide range in positive and negative directions in the vicinity where the relative dielectric constant ?r is 39. According to the invention, when, in La—Pr—Al—Ga—Sr—Ti-based oxide dielectric porcelain, contents of the respective elements are limited to be within particular ranges and Sr is partially substituted by Ca, a structure having a (1-x)(La1-yLny)(Al1-zGaz)O3-x(Sr1-mCam)TiO3 solid solution as a main phase, in which a solid solution of Al—Ga—Sr-based oxide and/or a solid solution of Al—Ga-based oxide and a Sr oxide is/are precipitated in a grain boundary thereof, can be obtained, whereby the above-mentioned object can be achieved.

Abstract: A ceramic composition comprising a binary system solid solution represented by the formulae: (1-x)(Sr1-yBiy)TiO3+x(Na0.5Bi0.5)TiO3 and (1-x)(Sr1-1.5yBiy)TiO3+x(Na0.5Bi0.5)TiO3, wherein 0<x<1 and 0<y?0.2.

Abstract: A batch powder composition for preparing a non-ferroelectric, sintered dielectric ceramic; a multilayer ceramic capacitor thereof; and an energy storage device. The batch powder contains a titanate powder of at least one of CaTiO3, SrTiO3, or CaxSr1-xTiO3 where x=0 to 1, and an acceptor additive. A sintering aid and a donor additive also may be present in the batch powder. The batch powder may be sintered at temperatures of about 1050° C. or less. The ceramic contains a titanate from the titanate powder, the acceptor additive, and the optional sintering aids and donor additive. The multilayer ceramic capacitor is made of the sintered dielectric ceramic and may have electrodes of copper or a copper-nickel alloy. An energy storage device has electrical connections connected to the electrodes of the multilayer ceramic capacitor. The electrical connections may be in electrical communication with additional multilayer ceramic capacitors.

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: There is provided a novel thermal barrier coating material which does not have a problem of phase transition, whose melting point is higher than its working temperature range, whose thermal conductivity is smaller than that of zirconia, and whose thermal expansion coefficient is greater than that of zirconia. The thermal barrier coating material comprises as a main component, a composition having an orthorhombic or monoclinic structure derived from perovskite (for example, a tabular perovskite structure expressed by the composition formula A2B2O7), or a tetragonal layer structure having a c axis/a axis ratio equal to or greater than 3 (for example, a K2NiF4 structure, a Sr3Ti2O7 structure, or a Sr4Ti3O10 structure), a composition expressed by the composition formula LaTaO4, or a composition having an olivine type structure expressed by the composition formula M2SiO4 or (MM?)2SiO4 (where M, M? are divalent metal elements).

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 ceramic whose primary crystal grains 1 comprise a composite oxide composed mainly of Ti and at least one kind of alkaline earth metal element selected from Ca, Sr and Ba. The primary crystal grains 1 contain the metal compositions of Mg, Mn and a rare earth element. At least one kind of metal composition of the Mg, the Mn and the rare earth element is present at a higher concentration on the surface side 5 of the primary crystal grains 1 than the inside 3 thereof. A 0.04 to 0.2 parts by mass of Zr in terms of oxide to 100 parts by mass of the composite oxide is contained. It is therefore able to impart a high dielectric constant even to finely granulated barium titanate based crystal grains, and also stabilize the temperature characteristics of dielectric constant.

Abstract: A honeycomb filter, for removing from exhaust gas fine solid particles containing carbon, is an aluminum magnesium titanate sintered product obtained by firing at from 1000 to 1700° C. a product formed from a mixture comprising a Mg-containing compound, an Al-containing compound and a Ti-containing compound in the same metal component ratio as the metal component ratio of Mg, Al and Ti in aluminum magnesium titanate represented by the empirical formula MgxAl2(1?x)Ti(1+x)O5 (wherein 0<x<1), or a mixture comprising 100 parts by mass, as calculated as oxides, of the above-mentioned mixture and from 1 to 10 parts by mass of an alkali feldspar represented by the empirical formula (NayK1?y)AlSi3O8 (wherein 0?y?1).

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 powder composition, ceramic material, and laminated ceramic condenser comprised thereof. The composition includes ceramic powders comprising (SrxCa1?x)TiyZr1?yO3, and a sintering aid, wherein x is between 0 and 1, and y is between 0 and 0.1. The sintering aid is Ma2O, MbO, Mc2O3, MdO2, or a combination thereof. Element Ma comprises Li, Na, K, or a combination thereof. Element Mb comprises Be, Mg, Ca, Sr, Ba, or a combination thereof. Element Mc comprises B, Al, Ga, or a combination thereof. Element Md comprises Si, Ge, or a combination thereof.

Abstract: An embodiment of the present invention provides an electronically tunable dielectric material, comprising at least one electronically tunable dielectric phase and at least one compound of low loss complex perovskites. The at least one electronically tunable dielectric phase may be selected from the group consisting of barium strontium titanate, barium titanate, strontium titanate, barium calcium titanate, barium calcium zirconium titanate, lead titanate, lead zirconium titanate, lead lanthanum zirconium titanate, lead niobate, lead tantalate, potassium strontium niobate, sodium barium niobate/potassium phosphate, potassium niobate, lithium niobate, lithium tantalate, lanthanum tantalate, barium calcium zirconium titanate, sodium nitrate, and combinations thereof. Further, the barium strontium titanate may of the formula BaxSr1-xTiO3, where x is from about 0 to about 1, or more specifically, but not limited in this respect, may also be of the formula BaxSr1-xTiO3, where x may be from about 0.15 to about 0.

Abstract: Ba(OH)2.8H2O is fused by heating. The fused Ba(OH)2 is allowed to react with TiO2 powder having a specific surface area of 250 m2/g or more to prepare a cubic crystalline BaTiO3 having high crystallinity. The BaTiO3 is calcined to yield a fine, tetragonal crystalline BaTiO3 powder having high crystallinity. Thus, a high quality BaTiO3 having high crystallinity can be prepared at a low cost.

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 dielectric piece includes an energy barrier layer and a plurality of crystalline metal compound dots distributed in the energy barrier layer. The material of the crystalline metal compound dots is different from that of the energy barrier layer. Due to its capability of retaining charges, the dielectric piece of the present invention meets the requirements of semiconductor devices in this and the next generation so as to be applied to complementary metal oxide semiconductors (CMOS), non-volatile memory devices, or capacitors as inter-gate dielectric layers, charge storage layers, or dielectric layers of capacitors.

Abstract: A dielectric ceramic composition comprising forsterite in an amount of 93.0 to 99.0 mol % when calculating in terms of 2MgO—SiO2 and calcium titanate in an amount of 1.0 to 7.0 mol % when calculating in terms of CaTiO3 as main components, and as a subcomponent, aluminum oxide in an amount of 0.2 to 5 mass % when calculating in terms of Al2O3 per 100 mass % of said main components. According to the present invention, a dielectric ceramic composition, capable of having both low permittivity and good frequency-temperature characteristic as well as ensuring high Qf value and further having sufficient mechanical strength, and suitable to use in an antenna, a filter and the like used in the high-frequency region, can be provided. Also, the present invention allows providing a dielectric ceramic composition further having resistance to reduction in addition to all of the above properties.

Abstract: A method of production of a multilayer ceramic electronic device having dielectric layers with an interlayer thickness of 5 ?m or less and internal electrode layers including a base metal, including the steps of firing, then annealing a stack comprised of a dielectric layer paste and an internal electrode layer paste including a base metal alternately arranged in 100 layers or more under a reducing atmosphere, treating the annealed stack by first heat treatment under a strong reducing atmosphere of an oxygen partial pressure P3 of over 2.9×10?39 Pa to less than 6.7×10?24 Pa at a holding temperature T3 of over 300° C. to less than 600° C. The stack after the first heat treatment is treated by second heat treatment under an atmosphere of an oxygen partial pressure P4 of over 1.9×10?7 Pa to less than 4.1×10?3 Pa at a holding temperature T4 of over 500° C. to less than 1000° C.

Abstract: Provided is a piezoelectric ceramic composition capable of being sintered at low temperatures and in a low-oxygen reductive atmosphere and capable of attaining a sufficient displacement even at high voltages of 1 kV/mm or more. The piezoelectric ceramic composition includes: a composite oxide, as a main constituent thereof, represented by the following composition formula; Cu and/or Ag, each as a first additive, Cu being included in a content ?, in terms of Cu2O, falling within a range 0<??0.5% by mass and Ag being included in a content ?, in terms of Ag2O, falling within a range 0<??0.4% by mass, in relation to the main constituent; wherein: composition formula: Pba[(Zn1/3Nb2/3)xTiyZrz]O3, where 0.96?a?1.03, 0.005?x<0.05, 0.42?y?0.53, 0.45?z?0.56, and x+y+z=1.

Abstract: An embodiment of the present invention provides a method of making an electronically tunable dielectric material comprising mixing particles of at least one electronically tunable dielectric phase and particles of at least one compound of low loss complex perovskites, and particles of optional one other family of materials; and sintering the material.

Abstract: Abradable coatings are provided. The coatings comprise SrTiO in combination with a ceramic, such as ytrria stabilized zirconia, or SrTiO in combination with an MCrAlX, such as NiCoCrAlY. The abradable coatings are suitable for use in high temperature environments found in gas turbine engines. Also provided are metal articles coated with such coatings, and abradable assemblies.