Abstract
The (1 − y)Nd(1−2x/3)Bax(Mg0.5Sn0.5)O3–yCa0.8Sr0.2TiO3 ceramics were prepared by the conventional solid-state method. The X-ray diffraction patterns of the Nd(1−2x/3)Bax(Mg0.5Sn0.5)O3 ceramics revealed that Nd(1−2x/3)Bax(Mg0.5Sn0.5)O3 is the main crystalline phase, which is accompanied by a little Nd2Sn2O7 as the second phase. An apparent density of 6.89 g/cm3, a dielectric constant (er) of 19.1, a quality factor (Q × f) of 212,000 GHz, and a temperature coefficient of resonant frequency (τf) of −68 ppm/°C were obtained when the Nd2.94/3Ba0.03(Mg0.5Sn0.5)O3 ceramics were sintered at 1,550 °C for 4 h. The temperature coefficient of resonant frequency (τf) increased from −68 to +55 ppm/°C as y increased from 0 to 0.7 when the (1 − y)Nd2.94/3Ba0.03(Mg0.5Sn0.5)O3–yCa0.8Sr0.2TiO3 ceramics were sintered at 1,600 °C for 4 h. 0.4Nd2.94/3Ba0.03(Mg0.5Sn0.5)O3–0.6 Ca0.8Sr0.2TiO3 ceramic that was sintered at 1,600 °C for 4 h had a τf of −7 ppm/°C.
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More From: Journal of Materials Science: Materials in Electronics
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