The present invention relates to a dielectric composition having a main component and an auxiliary component. The main component is represented by (Bi.sub.aNa.sub.bSr.sub.cLn.sub.d)TiO.sub.3, where Ln comprises a rare earth element 0.100a0.400, 0.100b0.400, 0.100c0.700, 0d0.100, and 0.900a+b+c+d1.50. The auxiliary component contains a first auxiliary component or a second auxiliary component. The first auxiliary component includes an element selected from the group consisting of Li and K and combinations thereof and the second auxiliary component includes an element selected from the group consisting of Cu, Zn, Mn, Mg and Co and combinations thereof.

The present invention relates to a dielectric composition having a main component and an auxiliary component. The main component is represented by (Bi.sub.aNa.sub.bSr.sub.cLn.sub.d)TiO.sub.3, where Ln comprises a rare earth element 0.100a0.400, 0.100b0.400, 0.100c0.700, 0d0.100, and 0.900a+b+c+d1.50. The auxiliary component contains a first auxiliary component or a second auxiliary component. The first auxiliary component includes an element selected from the group consisting of Li and K and combinations thereof and the second auxiliary component includes an element selected from the group consisting of Cu, Zn, Mn, Mg and Co and combinations thereof.

The present invention aims to provide a piezoelectric composition containing a composition represented by formula (5) as the main component, wherein the composition represented by formula (5) contains a first perovskite-type oxide represented by formula (1), a second perovskite-type oxide represented by formula (2), a tungsten bronze-type oxide represented by formula (3) and a third perovskite-type oxide represented by formula (4), (K.sub.1-x-yNa.sub.xLi.sub.y).sub.q(Nb.sub.1-zTa.sub.z)O.sub.3 (1), SrZrO.sub.3 (2), Ba(Nb.sub.1-wTa.sub.w).sub.2O.sub.6 (3), (Bi.sub.0.5Na.sub.0.5)TiO.sub.3 and/or (Bi.sub.0.5K.sub.0.5)TiO.sub.3 (4), (1?m?n?p)A+mB+nC+pD (5); in formula (1), 0.20?x?0.80, 0.02?y?0.10, 0.01?z?0.30 and 0.800?q?1.050; in formula (3), 0.01?w?0.30; and in formula (5), A represents the composite oxide represented by formula (1), B represents the composite oxide represented by formula (2), C represents the composite oxide represented by formula (3), D represents the composite oxide represented by formula (4), and 0.04?m?0.07, 0?n?0.010 and 0.001?p?0.020.

The present invention aims to provide a piezoelectric composition containing a composition represented by formula (5) as the main component, wherein the composition represented by formula (5) contains a first perovskite-type oxide represented by formula (1), a second perovskite-type oxide represented by formula (2), a tungsten bronze-type oxide represented by formula (3) and a third perovskite-type oxide represented by formula (4), (K.sub.1-x-yNa.sub.xLi.sub.y).sub.q(Nb.sub.1-zTa.sub.z)O.sub.3 (1), SrZrO.sub.3 (2), Ba(Nb.sub.1-wTa.sub.w).sub.2O.sub.6 (3), (Bi.sub.0.5Na.sub.0.5)TiO.sub.3 and/or (Bi.sub.0.5K.sub.0.5)TiO.sub.3 (4), (1?m?n?p)A+mB+nC+pD (5); in formula (1), 0.20?x?0.80, 0.02?y?0.10, 0.01?z?0.30 and 0.800?q?1.050; in formula (3), 0.01?w?0.30; and in formula (5), A represents the composite oxide represented by formula (1), B represents the composite oxide represented by formula (2), C represents the composite oxide represented by formula (3), D represents the composite oxide represented by formula (4), and 0.04?m?0.07, 0?n?0.010 and 0.001?p?0.020.

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 (Bi.sub.aNa.sub.bSr.sub.cBa.sub.d) (.sub.xTi.sub.1x)O.sub.3, characterized in that a is at least one selected from Zr and Sn; and a, b, c, d and x satisfy the following: 0.140a<0.390, 0.140b<0.390, 0.200c<0.700, 0.020d<0.240, 0.020x<0.240 and 0.950<a+b+c+d1.050.

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 (Bi.sub.aNa.sub.bSr.sub.cBa.sub.d) (.sub.xTi.sub.1x)O.sub.3, characterized in that a is at least one selected from Zr and Sn; and a, b, c, d and x satisfy the following: 0.140a<0.390, 0.140b<0.390, 0.200c<0.700, 0.020d<0.240, 0.020x<0.240 and 0.950<a+b+c+d1.050.

LTCC devices are produced from dielectric compositions comprising a mixture of precursor materials that, upon firing, forms a dielectric material comprising a matrix of titanates of alkaline earth metals, the matrix doped with at least one selected from rare-earth element, aluminum oxide, silicon oxide and bismuth oxide.

LTCC devices are produced from dielectric compositions comprising a mixture of precursor materials that, upon firing, forms a dielectric material comprising a matrix of titanates of alkaline earth metals, the matrix doped with at least one selected from rare-earth element, aluminum oxide, silicon oxide and bismuth oxide.

[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): (Bi.sub.aNa.sub.bSr.sub.c)(Zn.sub.dTi.sub.1.sub._.sub.d)03 (1) [where a, b, c and d satisfy the following: 0.09a0.58, 0.09b0.42, 0.05c0.84, 0d0.08, and 0.95a+b+c1.05].

[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): (Bi.sub.aNa.sub.bSr.sub.c)(Zn.sub.dTi.sub.1.sub._.sub.d)03 (1) [where a, b, c and d satisfy the following: 0.09a0.58, 0.09b0.42, 0.05c0.84, 0d0.08, and 0.95a+b+c1.05].