Improvement in quality factor of (Zr_0.8Sn_0.2)TiO_4 microwave ceramics by Mn~4+ doping

摘要

Highly dense, good quality microwave dielectrics based on Mn4+ doped ZST have been prepared with ZST nanopowder without using any sintering aid. Single phase orthorhombic crystalline structure has been confirmed by XRD pattern. The room temperature dielectric constant remains almost unchanged in the low and microwave frequency regions (1 MHz to 9.3 GHz). A significant change in the microwave dielectric properties of ZST ceramics was observed with increasing Mn4+. There was almost four times increase in quality factor with Mn4+ doping in ZST ceramics.