Enhancing the microwave dielectric properties of Nd (Mg0.5Sn0.5)O3 ceramics by substituting Nd3+ with Ca2+ |
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Authors: | Yen-Nien Wang |
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Affiliation: | 1. Department of Electronic Engineering, Lunghwa University of Science and Technology, Gueishan Shiang, Taoyuan County, Taiwan
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Abstract: | The microwave dielectric properties of Nd(1?2x/3)Cax(Mg0.5Sn0.5)O3 ceramics were examined to evaluate their exploitation for mobile communication. Nd(1?2x/3)Cax(Mg0.5Sn0.5)O3 ceramics were prepared by the conventional solid-state method with various sintering temperatures. The X-ray diffraction patterns of the Nd2.9/3Ca0.05(Mg0.5Sn0.5)O3 ceramics revealed no significant variation of phase with the sintering temperature. Nd2.9/3Ca0.05(Mg0.5Sn0.5)O3 ceramics that were sintered at 1,550 °C for 4 h had the following properties: a density of 6.86 g/cm3, a dielectric constant (εr) of 19.3, a quality factor (Q × f) of 99,000 GHz, and a temperature coefficient of resonant frequency (τ f ) of ?65 ppm/°C. |
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