Abstract
Microwaves are often used in communication engineering,including in microwave relays as well as mul-tichannel,mobile,and satellite communications.To meet the demand for a"small,light,thin,and precise"modern electronic machine,developing highly tunable microwave materials to manufacture miniaturized microwave devices has become a top priority.Ferroelectric materials are excellent microwave materi-als,showing outstanding dielectric properties and tunability.Introducing low dielectric loss oxides in the construction of vertical self-assembly nanocomposites(VSNs)effectively improves their tunability and reduces dielectric loss.However,the optimal doping content of simple VSN films limits further improve-ment of tunability.Herein,we propose a strategy-gradient VSN to achieve combined improvement in tunability and dielectric constant by designing a sputtering and pulsed laser co-deposition.The resulting VSN composite film has a dielectric constant of 428.08,a dielectric loss of 0.0212,and a tunability of 78.69％.Our results contribute to the development of filters and have broad application prospects in the microwave industry.
基金项目
NSFC(11374086)
NSF of Hebei Province(E2014201188)
Postgraduate Innovation Fund Project of Hebei University(HBU2022bs009)
Project of Distinguished Young of Hebei Province(A2018201231)
NETL
NSTL
万方数据