Enhanced dielectric and tunable performance in BCZT91/BCZT87 bilayer ceramics

Yang, Pan; Zhao, Le; Wang, Bo; Zhang, Lijuan; Yu, Shihui

doi:10.1016/j.ceramint.2023.02.053

Cited by 4 publications

(1 citation statement)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…BCSZT100x ceramics were obtained via solid-state sintering using the preparation process reported in our previous work [26]. All mixed raw materials (TiO 2 , ZrO 2 , BaCO 3 , CaCO 3 and SnO 2 ) were calcined at 900 • C for 3 h to obtain pre-synthesis BCSZT powders.…”

Section: Methodsmentioning

confidence: 99%

Enhanced Tunability Achieving at Low Permittivity and Electric Field in (Ba0.91Ca0.09)(SnxZr0.2−xTi0.8)O3-2 mol% CuO-1 mol% Li2CO3 Ceramics

et al. 2023

Self Cite

View full text Add to dashboard Cite

Ferroelectric varactors should have high tunability at low permittivity and a working electric field to obtain better impedance matching and stable tunability. In this work, (Ba0.91Ca0.09)(SnxZr0.2−xTi0.8)O3-2 mol% CuO-1 mol% Li2CO3 (abbreviated as BCSZT100x, x = 0.05, 0.10, 0.15 and 0.20, respectively) are prepared to achieve high tunability at low permittivity and a working electric field. The tunable mechanisms are investigated based on crystal structure, micro-morphology and the permittivity-temperature spectrum. The results show that the shrink of oxygen octahedron and weaker interaction force between Sn4+ and O2− make BCSZT5 ceramic have a higher tunability value of 26.55% at low permittivity (1913) and a working electric field (7.3 kV/cm). The tunability value of BCSZT5 ceramic increases by 58%, while its permittivity decreases by 25%, compared with x = 0. Those advantages make BCSZT5 ceramic have substantial application prospects in varactors.

show abstract

Section: Methodsmentioning

confidence: 99%