(Ca1- x Nd2 x /3)TiO3 sintered samples are fabricated with 0≦x≦1 and the crystal structure and dielectric properties are investigated. It is shown that (Ca1- x Nd2 x /3)TiO3 has an orthorhombic GdFeO3-type structure for 0≦x≦0.69 and an La2/3TiO3-type double-layered perovskite structure for 0.78≦x≦0.93. High ε and high f Q values are obtained for the GdFeO3 phase of (Ca1- x Nd2 x /3)TiO3, e.g., ε=108 and f Q=17200 GHz for x=0.39. On the other hand, for the La2/3TiO3 phase, ε is between 80 and 100 and f Q is below 1000 GHz.
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Yoshida et al. (1997) studied this question.
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