Giant dielectric tunability in ferroelectric ceramics with ultralow loss by ion substitution design.

ABSTRACT: Due to their responsiveness to modulation by external direct current fields, dielectric tunable materials are extensively utilized in integrated components, such as ferroelectric phase shifters. Barium strontium titanate ceramics have been considered the most potential tunable materials for a long time. However, the significant dielectric loss and high voltage drive have limited their further applications. Recently, Bi₆Ti₅WO₂₂ ceramic has regained attention for its high dielectric tunability with low loss. In this study, we judiciously introduce Nb⁵⁺ with a larger ionic radius, replacing Ti⁴⁺ and W⁶⁺. This successful substitution enables the modulation of the phase transition temperature of Bi₆Ti₅WO

SUBMITTER: Li R 

PROVIDER: S-EPMC11069505 | biostudies-literature | 2024 May

REPOSITORIES: biostudies-literature