| 摘要 |
A glass comprising 10-40 mol % as Ln2O3 of a lanthanide oxide wherein Ln is a lanthanide element, 30-60 mol % as SiO2, B2O3 and GeO2 in total of silicon dioxide, boron oxide and/or germanium oxide, and 16-40 mol % as Al2O3 of aluminum oxide has high Tg, a low average coefficient of linear expansion and a high dielectric constant. A dielectric composition containing the glass and a dielectric material is useful in the fabrication of multilayer wiring substrates and multilayer ceramic capacitors.
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