Dielectric compositions for firing at low temperatures and electronic parts
AssigneeNGK Insulators, Ltd.
InventorsTakeshi Oobuchi, Tadashi Otagiri
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Abstract
An object of the present invention is to provide a dielectric composition for firing at a low temperature having a high dielectric constant ∈ r, a high Q value, and a low temperature coefficient τ f of the resonance frequency. A dielectric composition for firing at low temperatures comprises a main composition of x.BaO-y.TiO2-z1.Nd2O3-z2.La2O3-z3.Sm2O3-t.Bi2O3 (x+y+z 1+z 2+z 3+t=1 ; 0.070≦x≦0.300; 0.385≦y ≦0.844; 0.010≦z1≦0.130; 0.000≦z2≦0.120; 0.000≦z3≦0.120; 0.075<t≦0.185), and a glass component containing 0.1 weight percent or more of B2O3 in an amount of 0.05 to 20 weight parts with respect to 10 weight parts of the main composition.
Claims24
A dielectric composition for firing at low temperatures comprising a main composition of x.BaO—y.TiO2-z1.Nd2O3-z2.La2O3 —z3.Sm2O3-t.Bi2O3 (x+y+z1+z2+z3+t=1;
- 0.070≦x≦0.300;
- 0.385≦-y≦0.844;
- 0.010≦z1≦0.130;
- 0.000≦z2≦0.120;
- 0.000≦z3≦0.120;
- 0.075≦t≦0.185), and a glass component containing 0.1 weight percent or more of B2O3 in an amount of 0.05 to 20 weight parts with respect to 100 weight parts of said main composition.
A dielectric composition for firing at low temperatures comprising a main composition of x.BaO-y.TiO2-z1.Nd2O3-z2.La2O3-z3.Sm2O3-t.Bi2O3 (x+y+z1+z2+z3+t=1;
- 0.070≦x ≦0.385≦y≦0.844;
- 0.010≦z1≦0.130;
- 0.000≦z2≦0.120;
- 0.000≦z3≦0.120;
- 0.075≦t≦0.185) and B2O3 in an amount of 0.05 to 10 weight parts with respect to 100 weight parts of said main composition.
A dielectric composition for firing at low temperatures comprising a main composition of x.BaO-y.TiO2-z1.Nd2O3-z2.La2O3-z3.Sm2O3-t.Bi2O3 (x+y+z1+z2+z3+t=1;
- 0.100≦x≦0.250;
- 0.600≦y≦0.750;
- 0.010≦z1≦0.120;
- 0.000≦z2≦0.120;
- 0.000≦z3≦0.120;
- 0.010≦(z1+z2+z3)≦0.120;
- 0.065≦t≦0.075;
- 0.35≦t/(z1+z2+z3+t), and a glass component containing 0.1 weight percent or more of B2O3 in an amount of 0.05 to 20 weight parts with respect to 100 weight parts of said main composition.
A dielectric composition for firing at low temperatures comprising a main composition of x.BaO-y.TiO2-z1.Nd2O3-z2.La2O3 —z3.Sm2O3-t.Bi2O3 (x+y+z1+z2+z3+t=1;
- 0.100≦x≦0.250;
- 0.600≦y≦0.750;
- 0.010≦z1≦0.120;
- 0.000≦z2≦0.120;
- 0.000≦z3≦0.120;
- 0.010≦(z1+z2+z3)≦0.120;
- 0.065≦—t≦0.075;
- 0.35≦t/(z1+z2+z3+t) and B2O3 in an amount of 0.05 to 10 weight parts with respect to 100 weight parts of said main composition.
Dependencies are inferred from the claim text.