| 摘要 |
Provided are a dielectric ceramic composition of forsterite system for microwave and millimeter-wave application and a method for forming the same. Here, the dielectric ceramic composition having a small dielectric loss is used for communication devices used at microwave and millimeter-wave bands. The dielectric ceramic composition includes forsterite (Mg<SUB>2</SUB>SiO<SUB>4</SUB>) as a main element and titanium oxide (TiO<SUB>2</SUB>), which is partially substituted for silicon (Si) in forsterite. The dielectric ceramic composition is obtained by using 56 to 57 wt % of MgO, 33 to 42 wt % of SiO<SUB>2</SUB>, and 1 to 11 wt % of TiO<SUB>2</SUB>, and adding an additive including Li ions as a sintering aid for improving a sintering characteristic. The dielectric ceramic composition is formed by mixing MgO, SiO<SUB>2</SUB>, and TiO<SUB>2</SUB>, calcining the mixture to form forsterite powder, adding an additive including Li ion, for example, Li<SUB>2</SUB>CO<SUB>3</SUB>, and shaping and sintering the mixture.
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