Abstract: A dielectric composition, a dielectric element, an electronic component and a laminated electronic component are disclosed. In an embodiment the dielectric composition includes particles having a perovskite crystal structure including at least Bi, Na, Sr and Ti, wherein at least some of the particles have a core-shell structure including a core portion and a shell portion, and wherein the content of Bi present in the core portion is no greater than 0.83 times the content of Bi present in the shell portion.

Abstract: A piezoelectric composition including copper, germanium and a complex oxide represented by a compositional formula KmNbO3 and having a perovskite structure, in which m in the compositional formula satisfies 0.970? m?0.999, and with respect to 1 mol of the complex oxide, x mol % of copper in terms of a copper element and y mol % of germanium in terms of a germanium element are contained, wherein x satisfies 0.100 ?x?1.000 and y satisfies 0.000<y?1.500.

Abstract: A dielectric composition, a dielectric element, an electronic component and a laminated electronic component are disclosed. In an embodiment the dielectric composition includes particles having a perovskite crystal structure including at least Bi, Na, Sr and Ti, wherein the dielectric composition includes at least one selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg and Zn, wherein the content of the at least one selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg and Zn is between 0.5 molar parts and 11.1 molar parts, taking the Ti content of the dielectric composition as 100 molar parts, wherein 0.17???2.83, where ? is the molar ratio of Bi with respect to Sr in the dielectric composition.

Abstract: A dielectric composition, a dielectric element, an electronic component and a laminated electronic component are disclosed. In an embodiment the dielectric composition includes particles having a perovskite crystal structure including at least Bi, Na, Sr and Ti, wherein the content of the at least one element selected from La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg or Zn is between 0.5 molar parts and 11.1 molar parts, taking the Ti content of the dielectric composition as 100 molar parts, wherein 0.17???2.83, where ? is the molar ratio of Bi with respect to Sr in the dielectric composition, and wherein at least some of the particles include a high-Bi phase having a Bi concentration of at least 1.2 times the mean Bi concentration of the dielectric composition as a whole.

Abstract: A multi-layer ceramic capacitor is disclosed. In an embodiment the dielectric composition includes a perovskite crystal structure containing at least Bi, Na, Sr and Ti, wherein the dielectric composition includes a low-Bi phase in which a Bi concentration is no greater than 0.8 times the mean Bi concentration in the dielectric composition as a whole.

Abstract: A dielectric composition, a dielectric element, an electronic component and a laminated electronic component are disclosed. In an embodiment the dielectric composition includes particles having a perovskite crystal structure including at least Bi, Na, Sr and Ti, wherein at least some of the particles have a core-shell structure including a core portion and a shell portion, and wherein the content of Bi present in the core portion is no greater than 0.83 times the content of Bi present in the shell portion.

Abstract: A dielectric composition, a dielectric element, an electronic component and a multi-layer electronic component are disclosed. In an embodiment the dielectric composition includes particles having a perovskite crystal structure including at least Bi, Na, Sr and Ti, wherein at least some of the particles have a core-shell structure including a core portion and a shell portion and wherein the content of Bi present in the core portion is at least 1.2 times the content of Bi present in the shell portion.

Abstract: A dielectric composition, a dielectric element, an electronic component and a multi-layer electronic component are disclosed. In an embodiment the dielectric composition includes a perovskite crystal structure containing at least Bi, Na, Sr and Ti, wherein the dielectric composition includes at least one selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg and Zn, wherein the dielectric composition includes specific particles having a core-shell structure that has at least one core portion including SrTiO3 and wherein ? is set to 0.20???0.70, where ? is the ratio of the number of specific particles with respect to the total number of particles contained in the dielectric composition.

Abstract: A dielectric composition, a dielectric element, an electronic component and a laminated electric component are disclosed. In an embodiment a dielectric composition has a perovskite crystal structure containing at least Bi, Na, Sr and Ti, wherein the dielectric composition includes a high-Bi phase in which the Bi concentration is at least 1.2 times the mean Bi concentration in the dielectric composition as a whole.

Abstract: A dielectric composition, a dielectric element, an electronic component and a laminated electronic component are disclosed. In an embodiment the dielectric composition has a perovskite crystal structure containing at least Bi, Na, Sr and Ti, wherein the dielectric composition includes at least one selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg and Zn, wherein the dielectric composition includes specific particles having a core-shell structure that has at least one core portion including SrTiO3, and wherein ?<0.20, where a is the ratio of the number of specific particles with respect to the total number of particles contained in the dielectric composition.

Abstract: The aim of the present invention lies in providing a dielectric composition which has a relatively high dielectric constant of 800 or greater, and which has relatively low dielectric loss of 4% or less when a DC bias of at least 8 V/ym is applied, and also in providing a dielectric element employing said dielectric composition, an electronic component, and a laminated electronic component. A dielectric composition having a main component represented by (BiaNabSrcBad) (?xTi1?x)O3, characterized in that a is at least one selected from Zr and Sn; and a, b, c, d and x satisfy the following: 0.140?a<0.390, 0.140?b<0.390, 0.200?c<0.700, 0.020?d<0.240, 0.020?x<0.240 and 0.950<a+b+c+d?1.050.

Abstract: [Problem] The problem addressed lies in providing a dielectric composition having a relatively high dielectric constant of 900 or greater when a DC bias of at least 8 V/ym is applied, and also in providing a dielectric element employing said dielectric composition, an electronic component, and a laminated electronic component. [Solution] A dielectric composition in which the composition of the main component is in accordance with the following formula (1): (BiaNabSrc)(ZndTi1_d)03 (1) [where a, b, c and d satisfy the following: 0.09?a?0.58, 0.09?b?0.42, 0.05?c?0.84, 0?d?0.08, and 0.95?a+b+c?1.05].

Abstract: The problem addressed lies in providing a dielectric composition having a relatively high dielectric constant of 800 or greater when a DC bias of at least 8 V/?m is applied, and also in providing a dielectric element employing said dielectric composition, an electronic component, and a laminated electronic component. [Solution] A dielectric composition in which the composition of the main component is in accordance with the following formula (1): (BiaNabSrc)(MgdTi1-d)O3 (1) [where a, b, c and d satisfy the following: 0.10?a?0.65, 0<b?0.45, 0<c?0.85, 0<d<0.20, and 0.95?a+b+c?1.05].

Abstract: The aim of the present invention lies in providing a dielectric composition which has a relatively high dielectric constant of 800 or greater, and which has relatively low dielectric loss of 4% or less when a DC bias of at least 8 V/ym is applied, and also in providing a dielectric element employing said dielectric composition, an electronic component, and a laminated electronic component. A dielectric composition having a main component represented by (BiaNabSrcBad) (?xTi1-x) O3, characterized in that a is at least one selected from Zr and Sn; and a, b, c, d and x satisfy the following: 0.140?a?0.390, 0.140?b?0.390, 0.200?c?0.700, 0.020?d?0.240, 0.020?x?0.240 and 0.950<a+b+c+d?1.050.

Abstract: The problem addressed lies in providing a dielectric composition having a relatively high dielectric constant of 800 or greater when a DC bias of at least 8 V/?m is applied, and also in providing a dielectric element employing said dielectric composition, an electronic component, and a laminated electronic component. [Solution] A dielectric composition in which the composition of the main component is in accordance with the following formula (1): (BiaNabSrc) (MgdTi1-d)O3 (1) [where a, b, c and d satisfy the following: 0.10?a?0.65, 0<b?0.45, 0<c?0.85, 0<d<0.20, and 0.95?a+b+c?1.05].

Abstract: The problem addressed lies in providing a dielectric composition having a relatively high dielectric constant of 900 or greater when a DC bias of at least 8 V/ym is applied, and also in providing a dielectric element employing said dielectric composition, an electronic component, and a laminated electronic component. [Solution] A dielectric composition in which the composition of the main component is in accordance with the following formula (1): (BiaNabSrc) (ZndTi1_d)03 (1) [where a, b, c and d satisfy the following: 0.09?a?0.58, 0.09?b?0.42, 0.05?c?0.84, 0?d?0.08, and 0.95?a+b+c?1.05].

Abstract: A piezoelectric ceramic 10 composed mainly of a three-component solid solution represented by the following general formula (1), wherein x, y and z in general formula (1) satisfy the following formulas (2), (3), (4) and (5). x(Bi1/2Na1/2)TiO3?y(Bi1/2Li1/2)TiO3?z(Bi1/2K1/2)TiO3??(1) 0.80?x?0.96??(2) 0.02?y?0.08??(3) 0.01?z?0.

Abstract: A piezoelectric ceramic composition excellent in all of the electric property Qmax, heat resisting properties and temperature characteristics of oscillation frequencies is provided. The piezoelectric ceramic composition comprises a phase mainly comprising lead zirconate titanate having a perovskite structure and an Al-containing phase. In the piezoelectric ceramic composition, the main component preferably comprises Mn and Nb, and is preferably represented by a composition formula of Pb?[(Mn1/3Nb2/3)xTiyZrz]O3 (wherein 0.97???1.01, 0.04?x?0.16, 0.48?y?0.58, 0.32?z?0.41).

Abstract: A piezoelectric ceramic composition is provided which contains Perovskite oxides expressed by General Formula 1 below and an aluminum compound, and in which the content ratio of the aluminum compound to the Perovskite oxides is from 1% by mass to 11% by mass, (Pb?-?-?-?M1?M2?Bi?)[Ti{1-(x+y+z)}ZrxMnyNbz]O3??(1) wherein in the General Formula (1), M1 represents at least one kind of element selected from the group consisting of La, Ce, Pr, and Nd, M2 represents at least one kind of element selected from the group consisting of Sr, Ca, and Ba, and ?, ?, ?, ?, x, y, and z satisfy the following numerical conditions: 0.96???1.01 0.03???0.07 0???0.10 0???0.02 0?x?0.24 0.02?y?0.04 0.03?z?0.

Abstract: A piezoelectric ceramic 10 composed mainly of a three-component solid solution represented by the following general formula (1), wherein x, y and z in general formula (1) satisfy the following formulas (2), (3), (4) and (5). x(Bi1/2Na1/2)TiO3-y(Bi1/2Li1/2)TiO3-z(Bi1/2K1/2)TiO3??(1) 0.80?x?0.96??(2) 0.02?y?0.08??(3) 0.01?z?0.