Microstructures and microwave dielectric properties of (1-y)Nd1-xYbx(Mg0.5Sn0.5)O-3-yCa(0.8)Sr(0.2)TiO(3) ceramics

作者：Chen Yih Chien^*; Liu Hua Xian; Li Chih Hung; Fu Jing Yu; Cheng Yueh Chung

来源：Journal of Materials Science: Materials in Electronics , 2014, 25(4): 1836-1841.

DOI：10.1007/s10854-014-1806-5

The (1 - y)Nd1-xYbx(Mg0.5Sn0.5)O-3-yCa(0.8)Sr(0.2)TiO(3) ceramics were prepared by the conventional solid-state method. The X-ray diffraction patterns of the Nd1-xYbx(Mg0.5Sn0.5)O-3 ceramics revealed that Nd1-xYbx(Mg0.5Sn0.5)O-3 is the main crystalline phase, which is accompanied by a little Nd2Sn2O7 as the second phase. An apparent density of 6.87 g/cm(3), a dielectric constant (E > (r) ) of 19.48, a quality factor (Q x f) of 117,300 GHz, and a temperature coefficient of resonant frequency (tau (f) ) of -61 ppm/A degrees C were obtained when the Nd0.96Yb0.04(Mg0.5Sn0.5)O-3 ceramics were sintered at 1,600 A degrees C for 4 h. The temperature coefficient of resonant frequency (tau (f) ) increased from -61 to -3 ppm/A degrees C as y increased from 0 to 0.6 when the (1 - y)Nd0.96Yb0.04(Mg0.5Sn0.5)O-3-yCa(0.8)Sr(0.2)TiO(3) ceramics were sintered at 1,600 A degrees C for 4 h. 0.4Nd(0.96)Yb(0.04)(Mg0.5Sn0.5)O-3-0.6Ca(0.8)Sr(0.2)TiO(3) ceramic that was sintered at 1,600 A degrees C for 4 h had a tau (f) of -3 ppm/A degrees C.

• 出版日期2014-4