PROCESSING AND DIELECTRIC PROPERTIES OF La(Zn_(1/2)Ti_(1/2))O_3 AND Nd(Zn_(1/2)Ti_(1/2))O_3

摘要

The phase assemblage and dielectric properties of Nd(Zn_(1/2)Ti_(1/2))O_3 (NZT) and La(Zn_(1/2)Ti_(1/2))O_3 (LZT) ceramics prepared via the mixed-oxide route were investigated in this study. Single-phase ceramics were synthesised for both LZT and NZT at every sintering temperature below 1500 °C, at which temperature traces of (La,Nd)TiO_5 were apparent on pellet surfaces. Both compositions also have promising dielectric properties. In particular, LZT has ε_r = 34, Q_f = 36,000, and τ_f = -70 MK~(-1); while NZT has ε_r = 36, Q_f = 42,300, and τ_f = -47 MK~(-1). Clearly these materials show potential as filters for mobile microwave telecommunications.