| 摘要 |
A dielectric ceramic material containing lead, calcium, tungsten, iron, and niobium in oxide form has a primary phase of the composition: (pb1-zCaz)(WsFetNbu)O3 wherein 0.3</=z</=0.9, s+t+u=1, 0.01</=s</=0.2, 0.5</=t</=0.6, and 0.2</=u</=0.49. The material which can be effectively fired at low temperature has a minimal temperature coefficient of resonance frequency in the microwave frequencies, a high dielectric constant, and a high Qxf value.
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