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: There is provided a lead-free piezoelectric material capable of showing a high piezoelectric coefficient (d33>500 pC/N) exceeding that of soft PZT. The lead-free piezoelectric material contains no toxic element such as Pb, comprising a pseudo-binary solid solution of {[(Ba1-x1M1x1)((Ti1-xZrx)1-y1N1y1)O3]-?%[(Ba1-yCay)1-x2M2x2)(Ti1-y2N2y2)O3]} (wherein M1, N1, M2 and N2 represent an additive element)(abbreviated as BZT-?% BCT).

Abstract: A dielectric ceramic composition is disclosed. The dielectric ceramic composition of the present invention comprises BaTiO3 as the main component and one or more subcomponents. The one or more subcomponents include Sc2O3, MgCO3, BaSiO3, MnCO3, La2O3, CO3O4 and NiO. An end product of the present invention may be formed after BaTiO3 and the subcomponents undergo the following steps: (1) Wet mixing using a ball mill (2) Sintering in a reducing atmosphere (3) Annealing. The dielectric ceramic composition of the present invention can satisfy the X8R characteristic of the EIA standard and is compact or dense enough.

Abstract: There is provided a dielectric ceramic composition including a base powder expressed by a composition formula of Bam(Ti1-xZrx)O3, where 0.995?m?1.010 and 0<x?0.10, and first to fifth accessory components, and a multilayer ceramic capacitor having the same. The multilayer ceramic capacitor having the dielectric ceramic composition has a high dielectric constant and superior high-temperature reliability.

Abstract: A hexagonal type barium titanate powder comprising barium titanate as a main component shown by a generic formula of (Ba1-?M?)A(Ti1-?Ga?)BO3 and having hexagonal structure wherein; an effective ionic radius of 12-coordinated “M” is ?25% or more to +25% or less with respect to an effective ionic radius of 12-coordinated Ba2+, and said A, B, ? and ? satisfy relations of 0.975<(A/B)?1.015, 0.0015??<0.005, 0.075???0.15.

Abstract: A laminated ceramic capacitor which exhibits excellent lifetime characteristics in a high temperature loading test uses a dielectric ceramic constituting the dielectric layers which contains (Ba1-xCax)TiO3 as its main constituent, and contains a parts by mol of Al, b parts by mol of V, c parts by mol of Mg, and d parts by mol of Re with respect to 100 parts by mol of the (Ba1-xCax)TiO3. The Re is at least one metal element selected from among Y, La, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb, and the x, a, b, c, and d respectively satisfy the conditions of 0.050?x?0.150, a?0.15, 0.05?b?0.50, c?0.50, and d?1.00.

Abstract: A laminated ceramic capacitor suitable for intermediate to high voltage applications uses a dielectric ceramic represented by {100(BaTiO3+aBaZrO3)+bR+cMg+dMn+eSi} where R is a rare earth element; 0?a?0.2, 8.0?b?12.0, 1.0?c?10.0, 0.1?d?3.0, and 1.0?e?10.0, and includes first grains of 0.7 ?m or more in grain size and an average first grain size (Aave) and area ratio of the ceramic (SA), and second grains of 0.6 ?m or less in grain size and an average second grain size (Bave) and area ratio (SB), 0.8 ?m?Aave?2.0 ?m, 0.1 ?m?Bave?0.5 ?m, Aave/Bave?3.0, 0.3?SA?0.9, 0.1?SB?0.7, and 0.8?SA+SB?1.0.

Abstract: A dielectric ceramic composition includes a compound having perovskite type crystal structure shown by a general formula ABO3, where A is at least one selected from Ba, Ca and Sr, and B is at least one selected from Ti and Zr. The dielectric ceramic composition includes, as subcomponents, an oxide of RA (Dy, Gd and Tb); an oxide of RB (Ho and Y); an oxide of RC (Yb and Lu); Mg oxide and an oxide including Si in terms of RA2O3, RB2O3, RC2O3, Mg and Si, respectively. Also, when contents of the oxide of RA, RB and RC with respect to 100 moles of the compound are defined as “?”, “?” and “?”, respectively, they satisfy relations of 1.2?(?/?)?5.0 and 0.5?(?/?)?10.0.

Abstract: A dielectric ceramic composition comprising a compound expressed by a formula of ABO3, where “A” is Ba alone, or Ba and at least one selected from Ca and Sr, and “B” is Ti alone, or Ti and Zr, and having a perovskite-type crystal structure, and an oxide of a rare-earth element including Sc and Y. The dielectric ceramic composition includes a dielectric particle having a core-shell structure which has a core and a shell, the shell being present around the core and including at least “R” element, and in the shell, a region showing a maximum content rate of “R” element is a boundary region between the core and the shell.

Abstract: A dielectric ceramic material is composed of a perovskite compound represented by ABO3 as a main component. In the case where ABO3 is, for example, BaTiO3, the crystal grains include BaTiO3 crystal grains composed of the main component and, as secondary phases, Mg—Ni—Ti-containing crystalline grains composed of a crystalline oxide containing at least Mg, Ni, and Ti and Ba—Si-containing crystalline grains composed of a crystalline oxide containing at least Ba and Si.

Abstract: A glass-free microwave dielectric ceramic that can be sintered at low temperature is provided. The glass-free microwave dielectric ceramic composition includes (M1-x2+M?x2+)N4+B2O6 (wherein M and M? are different each other, each being one among Ba, Ca and Sr; N is one among Sn, Zr and Ti; and 0<x<1), M2+(N1-y4+N?y4+)B2O6 (wherein M is one among Ba, Ca and Sr; N and N? are different from each other, each being one among Sn, Zr and Ti; and 0<y<l), or (M1-x2+M?x2+)(N1-y4+)B2O6 (wherein M and M? are different from each other, each being one among Ba, Ca and Sr; N and N? are different from each other, each being one among Sn, Zr and Ti; 0<x<1; and 0<y<l). In addition, the glass-free microwave dielectric ceramic composition may further includes approximately 1 wt % to approximately 7 wt % of a sintering aid represented by a formula, 0.12CuO+0.88Bi2O3. As such, the glass-free microwave dielectric ceramic composition may be sintered at a low temperature at lowest 875° C.

Abstract: The invention relates to a ceramic dielectric material and to capacitors including the ceramic dielectric material. The ceramic dielectric material of the invention exhibits a high relative dielectric constant and a stable temperature characteristic of the relative dielectric constant.

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 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: Provided are a glass composition, a dielectric composition and a multi-layer ceramic capacitor embedded low temperature co-fired ceramic substrate using the same. The multi-layer ceramic capacitor embedded low temperature co-fired ceramic substrate is sinterable at a low temperature while showing a high dielectric constant. The glass composition includes a composition component expressed by a composition formula of aBi2O3-bB2O3-cSiO2-dBaO-eTiO2, where a+b+c+d+e=100, and a, b, c, d, and e are 40?a?89, 10?b?50, 1?c?20, 0?d?10, and 0?e?10, respectively.

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 carbonate 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: Provided is barium titanate based powder represented by Chemical Formula 1: (BaxR1r1R2r2)(TiyR3r3R4r4)O3??[Chemical Formula 1] wherein R1 is at least one element selected from the group consisting of yttrium (Y) and lanthanoids; R2 is at least one element selected from the group consisting of magnesium (Mg), calcium (Ca) and strontium (Sr); R3 includes phosphorus (P) and niobium (Nb); R4 is at least one element selected from the group consisting of aluminum (Al), vanadium (V), chrome (Cr), manganese (Mn), cobalt (Co), zirconium (Zr) and tantalum (Ta); r1 and r3 independently represent a real number greater than 0 and equal to or less than 0.05; r2 and r4 independently represent a real number greater than 0 and equal to or less than 0.1; and (x+r1+r2)/(y+r3+r4) is a real number ranging from 0.85 to 1.15.

Abstract: A bismuth sodium titanate (Bi0.5Na0.5TiO3) base material is modified by the partial substitution of aliovalent A-site cations such as barium (as BaO) or strontium (as SrO), as well as certain b-site donor/acceptor dopants and sintering aids to form a multi-phase system, much like known “core/shell” X7R dielectrics based solely on BaTiO3. The resulting ceramic dielectric composition is particularly suitable for producing a multilayer ceramic capacitor (10) that maintains high dielectric constant (and thus the capability of maintaining high capacitance) over a broad temperature range of from about 150° C. to about 300° C. Such capacitors (10) are appropriate for high temperature power electronics applications in fields such as down-hole oil and gas well drilling.

Abstract: It is intended to provide a Pb-free semiconductor ceramic composition capable of shifting its Curie temperature toward a positive direction and capable of enhancing its jump characteristic while minimizing the increase in the resistivity at room temperature. There is provided a semiconductor ceramic composition in which a part of Ba of BaTiO3 is substituted with Bi—Na, the semiconductor ceramic composition being obtained by sintering a mixed calcined powder containing a calcined BT powder containing a calcined powder of (BaR)TiO3 or a calcined powder of Ba(TiM)O3 (in which R and M each are a semiconductor dopant), and a calcined BNT powder containing a calcined powder of (BiNa)TiO3; in which BaCO3 and/or TiO2 is/are added to the calcined BT powder or the calcined BNT powder or to the mixed calcined powder.

Abstract: It is intended to provide a semiconductor ceramic composition containing no Pb, which is capable of shifting the Curie temperate to a positive direction as well as of controlling room temperature resistivity and having an excellent jump characteristic. Since the semiconductor ceramic composition in which a portion of Ba of BaTiO3 is substituted by Bi—Na has a crystal in which a central part and an outer shell part of a crystal grain are different from each other in composition, the composition is capable of improving control of room temperature resistivity and a jump characteristic, and therefore it is optimum as a material for a PTC thermistor, a PTC heater, a PTC switch, a temperature detector, and the like.

Abstract: A dielectric ceramic composition includes BaTiO3 as a main component; as subcomponents, with respect to 100 moles of BaTiO3, 0.9 to 2.0 moles of an oxide of RA in terms of RA2O3, where RA is at least one selected from Dy, Gd and Tb; 0.3 to 2.0 moles of an oxide of RB in terms of RB2O3, where RB is at least one selected from Ho and Y; 0.75 to 2.5 moles of an oxide of Yb in terms of Yb2O3; and 0.5 to 2.0 moles of an oxide of Mg in terms of Mg. when contents of oxide of RA, oxide of RB and oxide of Yb with respect to 100 moles of BaTiO3 are defined as “?”, “?” and “?”, respectively, “?”, “?” and “?” satisfy relations of 0.66?(?/?)?3.0 and 0.85?(?+?)/??2.4. According to the present invention, a dielectric ceramic composition having good properties can be provided.

Abstract: The dielectric ceramic composition comprising a main component including a compound satisfying a compositional formula of (SrxBa1-x)mTiO3 (“x” in said compositional formula is 0.159?“x”?0.238, and “m” is 0.997?“m”?1.011), and a subcomponent comprising 11 to 25 weight % of CaTiO3, 0.10 to 0.50 weight % of at least one oxide of element selected from the group consisting of Fe, Co, Ni, Cu, and Zn in terms of FeO3/2, CoO4/3, NiO, CuO, and ZnO, 0.590 to 1.940 mol % of an oxide of element “A” (A is Mn and/or Cr), and an oxide of element “D” where “D” is at least one element selected from a group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, and Y; wherein a ratio (A/D) of the element “A” with respect to element “D” is 2.250 to 7.450. According to the present invention, the dielectric loss (tan ?) at the wide frequency range can be lowered while maintaining a good capacitance temperature characteristic and the specific permittivity, without including Pb and bismuth Bi.

Abstract: The present invention relates to a dielectric thin film composition showing linear dielectric properties, in which tin oxides (SnO2) are introduced into a (Ba,Sr)TiO3 (BSTO) dielectric thin film in a continuous diffusion gradient manner in composition. Since the non-linear dielectric properties of BSTO are converted to linear dielectric properties by the addition of SnO2 according to the present invention, the dielectric thin film composition of the present invention is characterized in that: there is little change in the capacitance according to the applied electric field; it has a high dielectric constant capable of showing a desired capacitance even at a thickness suitable for preventing the occurrence of electron tunneling; and it exhibits paraelectric properties similar to the conventional dielectric substances such as SiO2 while having a very low dielectric loss.

Abstract: A dielectric ceramic capacitor that has excellent reliability and particularly excellent life characteristics in a load test even when the thickness of a dielectric ceramic layer is reduced uses a dielectric ceramic as a dielectric ceramic layer in a laminated ceramic capacitor which is a substance containing, as the main component, (Ba, R)(Ti, V)O3 or (Ba, Ca, R)(Ti, V)O3 in which R is at least one selected from La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y, and in which both V and R are present uniformly in the main component particles.

Abstract: A dielectric ceramic (and capacitor containing it) balancing high temperature load characteristics and temperature characteristics of capacitance even when layer thickness is less than 1 ?mhas a mixture of different crystal grains containing a barium titanate compound as the main constituent. The first crystal grains can contain rare earth element solid solution region lat the surface layer section. The second crystal grains have a core-shell structure including a shell section having a rare earth element solid solution present. The first and second crystal grains are 12% to 84% f and 16% to 88%, respectively, of the total number of crystal grains.

Abstract: A dielectric ceramic composition includes a compound having perovskite type crystal structure shown by a general formula ABO3, where A is at least one selected from Ba, Ca and Sr, and B is at least one selected from Ti and Zr, as a main component. The dielectric ceramic composition includes, as subcomponents, with respect to 100 moles of the compound, 1.0 to 2.5 moles of an oxide of RA (Dy, Gd and Tb); 0.2 to 1.0 mole of an oxide of RB (Ho and Y); 0.1 to 1.0 mole of an oxide of RC (Yb and Lu); 0.8 to 2.0 moles of Mg oxide and 1.2 to 3.0 moles of an oxide including Si in terms of RA2O3, RB2O3, RC2O3, Mg and Si, respectively. Also, when contents of the oxide of RA, RB and RC with respect to 100 moles of the compound are defined as “?”, “?” and “?”, respectively, the “?”, “?” and “?” satisfy relations of 2.5?(?/?)?5.0 and 1.0?(?/?)?10.0. According to the present invention, a dielectric ceramic composition having good properties can be provided.

Abstract: Electronic device 1 comprises an element body 10, comprising a dielectric layer 2 constituted by a dielectric ceramic composition, and a terminal electrode 4, formed outside of the element body 10. The dielectric ceramic composition comprised a main component including barium titanate; a first subcomponent including at least one oxide of Mg and Ca; a second subcomponent including SiO2; a third subcomponent including at least one oxide of Mn and Cr; and a fourth subcomponent including an oxide of rare earth elements, wherein the net valence of Mn and/or Cr in the third subcomponent is 2.2 to 2.4. According to the electronic device 1, both high temperature accelerated lifetime characteristics and capacity stress aging characteristics can be improved in a balanced manner.

Abstract: Dielectric compositions that include compound of the formula [(M?)1?x(A?)x][(M?)1?y?z,(B?)y(C?)z]O3??(VO)? and protonated dielectric compositions that include a protonated dielectric compound within the formula [(M?)1?x(A?)x](M?)1?y?z(B?)y(C?)z]O3??+h(Vo)?(H*)2h are disclosed. Composite materials that employ one or more of these dielectric compounds together with an electrolyte also are disclosed. Composite material that employs one or more of these dielectric compounds together with an electrochemally active material also are disclosed.

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: Provided is a dielectric ceramic containing yttrium, manganese, and aluminum, and having a composition formula expressed by ?BaO.?Nd2O3.?TiO2, wherein mole ratios ?, ? and ? satisfy 14???21, 4???21, and 65???75, respectively. In this case, the equation: ?+?+?=100 is established.

Abstract: Production method of dielectric ceramic composition including a main component of (Ba1-x-ySrxCay)m(Ti1-zZrz)O3 comprises steps of preparing materials of a first main component of (Ba1-x1-ySrx1Cay)m(Ti1-zZrz)O3 and a second main component of (Ba1-x2-ySrx2Cay)m(Ti1-zZrz)O3, obtaining a material of the main component by mixing materials of the first and second main component, and fixing the material of the main component. When molar numbers of main component, first main component and second main component are 1, “a” and “b”, respectively, a+b=1, a:b=20:80 to 80:20, 0.20?x?0.40, x=(ax1+bx2), x1/x2?1.05, 0?y?0.20, 0?z?0.30 and 0.950?m?1.050. By the present invention, the dielectric ceramic composition in which capacitance change rate is, set to the predetermined range with respect to an absolute value of capacity temperature characteristic, which is large, within wide temperature range can be obtained.

Abstract: A dielectric ceramic composition comprising a main component expressed by a general formula (Ba1?x?ySrxCay)m(Ti1?zZrz)O3, Mg oxide, oxides of at least one kind selected from Mn and Cr, rare earth oxide, an oxide including Si and a composite oxide including Ba, Sr and Zr. The general formula shows that 0.20?x?0.40, 0?y?0.20, 0?z?0.30, and 0.950?m?1.050. Within a temperature range of ?25 to 105° C., a capacitance change rate on the basis of a capacitance at 25° C. is within ?15 to +5% with respect to slope “a” which shows capacity temperature characteristic on the basis of the capacitance at 25° C., and the slope “a” is ?5500 to ?1800 ppm/° C. By the present invention, a dielectric ceramic composition which is able to set the capacitance change rate to a predetermined range with respect to absolute value of capacity temperature characteristic within a wide temperature range even when the absolute value is large can be obtained.

Abstract: It is intended to provide a semiconductor ceramic composition in which a part of Ba in BaTiO3 is substituted with Bi—Na, which is capable of restraining the evaporation of Bi in the calcination step, is capable of restraining the compositional deviation of Bi—Na thereby suppressing the formation of different phases, is capable of further reducing the resistivity at room temperature, and is capable of restraining the fluctuation of the Curie temperature; and to provide a production process of the same.

Abstract: Provided are a dielectric composition and a multi-layer ceramic capacitor embedded low temperature co-fired ceramic substrate using the same. The dielectric composition includes a main component, BaTiO3 of about 80 wt % or more, and an accessory component, CuBi2O4 and ZnO—B2O3—SiO2-based glass of about 20 wt % or less.

Abstract: Provided is a modified perovskite type composite oxide in which the dielectric characteristics are equal to or better than those prior to modification, there is no substantial elution of coating components from the modifying coating components, and elution of the A-site metals is suppressed effectively, while the cracking traits are good. A modified perovskite type composite oxide in which the particle surface of a perovskite type composite oxide is firstly coated with at least one selected from a group consisting of TiO2, Al2O3, ZrO2, and Nd2O3, wherein the first coating is formed by hydrolyzing at least one selected from a group consisting of a hydrolyzable TiO2 precursor, a hydrolyzable Al2O3 precursor, a hydrolyzable ZrO2 precursor, and a hydrolyzable Nd2O3 precursor, and then calcining it at 700° C. to 1200° C.

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: The present invention provides a fuel cell in which electricity is generated and a paraffin is converted to an olefin. Between the anode and cathode compartment of the fuel cell is a ceramic membrane of the formula BaCe0.85-eAeLfY0.05-0.25O(3-?) wherein A is selected from the group consisting of Hf and Zr and mixtures thereof, e is from 0.1 to 0.5, L is a lanthanide and f is from 0 to 0.25 and ? is the oxygen deficiency in the ceramic.

Abstract: A dielectric ceramic composition comprises a main component composed of at least one selected from BaTiO3, (Ba, Ca)TiO3, (Ba, Sr)TiO3 and (Ba, Ca, Sr)TiO3, an oxide of rare earth element and a composite compound including Ba. 9 to 13 mol of the composite compound in terms of composite compound is included in the dielectric composition. The dielectric ceramic composition includes surface diffusion particles having surface diffusion structure composed of non diffusion phase and diffusion phase including rare earth element. In the surface diffusion particle, when an area of the non diffusion phase is defined as S1, an area of the diffusion phase is defined as S2, S1 and S2 satisfy a relation of S1:S2=20:80 to 30:70 (Note that, except S1=30 and S2=70) , when an average concentration of the rare earth element in the surface diffusion particle is defined as C, S2 and C satisfy a relation of 4.8?S2×C?5.8.

Abstract: There is provided a dielectric ceramic composition including a base powder expressed by a composition formula of Bam(Ti1-xZrx)O3, where 0.995?m?1.010 and 0<x?0.10, and first to fifth accessory components, and a multilayer ceramic capacitor having the same. The multilayer ceramic capacitor having the dielectric ceramic composition has a high dielectric constant and superior high-temperature reliability.

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: Wet-chemical methods involving the use of water-soluble hydrolytically stable metal-ion chelate precursors and the use of a nonmetal-ion-containing strong base can be used in a coprecipitation procedure for the preparation of ceramic powders. Examples of the precipitants used include tetraalkylammonium hydroxides. A composition-modified barium titanate is one of the ceramic powders that can be produced. Certain metal-ion chelates can be prepared from 2-hydroxypropanoic acid and ammonium hydroxide.

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, wherein said low loss complex pervoskites comprise two B site cations.

Abstract: A dielectric ceramic composition is disclosed. The dielectric ceramic composition of the present invention comprises BaTiO3 as the main component and one or more subcomponents. The one or more subcomponents include Sc2O3, MgCO3, BaSiO3, MnCO3, La2O3, CO3O4 and NiO. An end product of the present invention may be formed after BaTiO3 and the subcomponents undergo the following steps: (1) Wet mixing using a ball mill (2) Sintering in a reducing atmosphere (3) Annealing. The dielectric ceramic composition of the present invention can satisfy the X8R characteristic of the EIA standard and is compact or dense enough.

Abstract: A purpose of the present invention is to provide a dielectric ceramic composition which is available to obtain a multilayer ceramic capacitor having a high specific permittivity and a small temperature change of capacitance. A dielectric ceramic composition comprises a dielectric main component composed of 86.32 to 97.64 mol % of BaTiO3, 0.01 to 10.00 mol % of Y2O3 and 0.01 to 10.00 mol % of MgO and 0.001 to 0.200 mol % of V2O5, 0.01 to 1.0 mol % of more than one kind of a first additive selected from a group composed of MnO, Cr2O3, CO2O3, 0.5 to 10.0 mol % of a second additive which is {Ba?, Ca (1??)}SiO3 (note, 0???1), and Sr 10 to 500 ppm, S: 10 to 50 ppm, Al: 10 to 50 ppm, Fe: 10 to 50 ppm, Zr: 100 to 800 ppm, Y: 10 to 100 ppm, Hf: 10 to 100 ppm to 100 parts by weight of BaTiO3.

Abstract: A dielectric ceramic composition of the invention comprises a main component expressed in a compositional formula of (Ba1-x-yCaxSry)m(Ti1-zZrz)O3, a first subcomponent of at least one compound selected from La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y, a second subcomponent of at least one compound selected from Si and Ag.

Abstract: The present invention relates to a method of preparing ceramics based on lanthanum-doped barium titanate, which comprises the following steps: (a) flash sintering of lanthanum-doped barium titanate powders; and (b) heat treatment of the material thus obtained, in an air atmosphere or in an oxidising atmosphere. The invention also relates to ceramics based on lanthanum-doped barium titanate, possessing a very high real part of the relative dielectric permittivity, and to their use for obtaining capacitors of high capacitance and high capacitance per unit volume for high-voltage withstand capability.

Abstract: The present invention relates to dielectric ceramics, thin and/or thick layers produced therefrom and a method for the production thereof and the use of the dielectrics and of the thin and/or thick layers.

Abstract: A dielectric ceramic composition has a dielectric constant, K, of at least 200 and a dielectric loss, DF, of 0.0006 or less at 1 MHz. The dielectric ceramic composition may be formed by sintering by firing in air without a controlled atmosphere. The dielectric ceramic composition may have a major component of 92.49 to 97.5 wt. % containing 60.15 to 68.2 wt. % strontium titanate, 11.02 to 23.59 wt. % calcium titanate and 7.11 to 21.32 wt. % barium titanate; and a minor component of 2.50 to 7.51 wt. % containing 1.18 to 3.55 wt. % calcium zirconate, 0.50 to 1.54 wt. % bismuth trioxide, 0.2 to 0.59 wt. % zirconia, 0.02 to 0.07 wt. % manganese dioxide, 0.12 to 0.35 wt. % zinc oxide, 0.12 to 0.35 wt. % lead-free glass frit, 0.24 to 0.71 wt. % kaolin clay and 0.12 to 0.35 wt. % cerium oxide. UHF antennas and monolithic ceramic components may use the dielectric ceramic composition.

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 ceramic powder composition, ceramic material, and a multi-layer ceramic capacitor fabricated thereby are provided. The ceramic powder composition includes a main ingredient and an accessory ingredient. The main ingredient is in an amount of 95 to 99 mol %, and includes BaTiO3, and the accessory ingredient is in an amount of 1 to 5 mol %, and consists of oxide Bi2O3—Tio2—XO, where X is selected from a group consisting of magnesium (Mg), vanadium (V), manganese (Mn), and chromium (Cr).