| 摘要 |
The present inventions provides a dielectric ceramic comprising an oxide containing, as a metal element, at least a rare earth element (Ln), Al, M (M is Ca and/or Sr) and Ti, and at least part of the oxide of Al being present as a crystal phase of beta-Al2O3 and/or theta-Al2O3. thereby having a high epsi r, high Q value and a small temperature coefficient of resonance frequency in a high frequency region.
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