The mechanism of microwave response in layer-cofired Zn3Nb2O8-TiO2-Zn3Nb2O8 ceramic architecture

Tri-layered Zn3Nb2O8-TiO2-Zn3Nb2O8 ceramic with high temperature stability are initially fabricated. On the basis of X-ray diffraction, Raman spectra and HFSS (High Frequency Structure Simulator) simulation, a reasonable parallel mode is put forward, then the transition layer at the heterogeneous interface is considered to be crucial to the microwave response in this system, and the theoretical feasibility of layer-cofired microwave dielectric ceramics is verified. Contrasting to the random distribution type Zn3Nb2O8-TiO2, this structure can substantially reduce the amount of TiO2 and achieve an eightfold increase in Qf value, which is conducive to produce the new generation microwave passive devices. (C) 2020 Elsevier B.V. All rights reserved.