| 摘要 |
The dielectric composition contains a mixture of a ceramic composition containing Ba<SUB>a</SUB>RE<SUB>b</SUB>Ti<SUB>c</SUB>O<SUB>3</SUB>, wherein RE represents a rare earth element, with 0.05<=a<=0.25, 0.525<=b<=0.70, 0.85<=c<=1.0, and 2a+3b+4c=6, and free from lead and bismuth, a glass composition, and a metal oxide. The glass composition preferably contains ZnO or MgO, SiO<SUB>2</SUB>, and at least 10% by weight of Li<SUB>2</SUB>O or TiO<SUB>2</SUB>. Preferably, the alkaline earth metal oxide is MgO. By preference, the glass composition essentially consists of 50-80% weight of SiO<SUB>2</SUB>, 5-25% weight of MgO, and optionally another alkaline earth metal oxide, and 10-25% by weight of Li<SUB>2</SUB>O, and is substantially free from boron. The dielectric composition can be sintered in the presence of Cu electrodes at a temperature below the melting point of Cu so as to manufacture an electronic device such as a ceramic multilayer element. After sintering, the dielectric composition has a relative dielectric constant of at least 55.
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