DIELECTRIC CHARACTERISTICS OF COMPOSITE CERAMICS IN THE BA(MG1/3TA2/3)O-3-BAO-CENTER-DOT-ND2O3-CENTER-DOT-5TIO(2) SYSTEM

摘要

Dielectric characteristics of composite ceramics in the system Ba(Mg1/3Ta2/3)O-3-BaO . Nd2O3 . 5TiO(2) were investigated to search for a new candidate system for microwave dielectric ceramics with modifiable dielectric constant, low dielectric loss and small temperature dependence. The dielectric constant could be adjusted in the range 25-81 by controlling the concentration of BaO . Nd2O3 . 5TiO(2), while the dielectric loss remained of the order of 10(-4) for some compositions. Moreover, the dielectric properties in the present system could be significantly improved by post-densification thermal treatment. [References: 13]