Applications of tunable dielectric materials and the performance comparison advantages of ferroelectric tunable dielectric materials.

A research team led by Professor Zhou Di from the School of Electronic Science and Engineering at the Faculty of Electronic and Information Engineering, Xi'an Jiaotong University (XJTU), has long focused on research into dielectrically tunable ferroelectric materials.

They developed the non-perovskite relaxor ferroelectric Bi6Ti5WO22 (BTW) system, analyzed its crystal structure and polarization response characteristics, and further optimized its dielectric tunability through strategies such as ion substitution and compositional regulation, achieving a series of research breakthroughs (Advanced Functional Materials, 2023, 33, 2210709; Nature Communications, 2024, 15, 3754; Advanced Functional Materials, DOI: 10.1002/adfm.76365).

Building on prior research, the team – in collaboration with institutions such as the National University of Singapore and Fudan University – recently published a review paper titled Ferroelectric tunable dielectric materials: Response mechanisms and applications in the internationally renowned materials science journal Materials Today.

The paper reviews the polarization response laws, theoretical models, and performance optimization strategies of ferroelectric tunable dielectric materials under bias electric fields, while offering a prospective outlook on the field's future development from the dual perspectives of response mechanisms and application demands.

Li Ruitao, a doctoral graduate from the School of Electronic Science and Engineering at XJTU's Faculty of Electronic and Information Engineering, is the first author of the paper. Professor Zhou Di from XJTU and Professor John Wang from the National University of Singapore serve as the corresponding authors.