Composite structures “ferroelectric/glass/dielectric matrix”

Abstract

Meta-structures based on periodic ferroelectric inhomogeneities in a dielectric matrix were implemented, which demonstrated tunability at a relatively low effective dielectric permittivity and low microwave losses. Glass-ceramic composite consisting of low melting glass and barium-strontium titanate was successfully incorporated into the periodic holes of dielectric matrix to form tunable metamaterial structure. The studied composite samples showed a relative dielectric permittivity of 18 with a dielectric loss level of 0.02 at a frequency of 2 GHz. The tunability of the entire structure under the applied electric field of 2 V/μm was 4%, which is a promising result for microwave tunable applications.

Keywords:

• Ferroelectric
• dielectric matrix
• glass
• electrical tunability
• microwave properties

Additional information

Funding

This work was supported by the Ministry of Science and Higher Education of Russian Federation under Grant No 075-01438-22-07 - FSEE-2022-0015.