Tuning the microwave dielectric properties of La(Mg0.4Sr0.1Sn0.5)O3 by introducing Ca0.8Sr0.2TiO3 |
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| Authors: | Yung-Yu Chen Yih-Chien Chen Ming-De Chen |
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| Affiliation: | 1. Department of Electronic Engineering, Lunghwa University of Science and Technology, Gueishan Shiang, Taoyuan County, Taiwan
2. Department of Electrical Engineering, Lunghwa University of Science and Technology, Gueishan Shiang, Taoyuan County, Taiwan
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| Abstract: | The influence of sintering temperature on the microwave dielectric properties and microstructure of the (1 ? y)La(Mg0.4Sr0.1Sn0.5)O3–yCa0.8Sr0.2TiO3 ceramic system were investigated with a view to their application in microwave devices. The (1 ? y)La(Mg0.4Sr0.1Sn0.5)O3–yCa0.8Sr0.2TiO3 ceramic systems were prepared using the conventional solid-state method. The X-ray diffraction patterns of the (1 ? y)La(Mg0.4Sr0.1Sn0.5)O3–yCa0.8Sr0.2TiO3 ceramic system shifted to higher angle as y increased. A dielectric constant of 41.2, a quality factor (Q × f) of 56,900 GHz, and a temperature coefficient of resonant frequency of ?6 ppm/ °C were obtained when the 0.4La(Mg0.4Sr0.1Sn0.5)O3–0.6Ca0.8Sr0.2TiO3 ceramic system was sintered at 1,550 °C for 4 h. |
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