Size effects on the dielectric properties of barium titanate (BaTiO₃) at microwave frequencies

Influence of Orthorhombic-Tetragonal Phase Transition on Microwave Dielectric Dispersion of BaTiO3Ceramic

“…The dielectric relaxation is only partly seen in the measured frequency range up to 1 GHz and shows a 𝑓 𝑟 value of 615 MHz. The result is basically consistent with those reported previously in literature [1,2,7,9,17]. Figure3displays the variation of dielectric dispersion spectra with temperature, which were measured during a heating process.…”

“…The result is basically consistent with those reported previously in literature. [1,2,7,9,17] Figure 3 displays the variation of dielectric dispersion spectra with temperature, which were measured during a heating process. Considerable changes could be seen clearly in both the real and imaginary parts of dielectric dispersion spectra in this figure.…”

Polymer–Ceramic Composites of 0–3 Connectivity for Circuits in Electronics: A Review

“…Dielectric particles smaller than 300 nm are required for fabricating films thinner than 2 μm 78 . However, the decreasing size of the ferroelectric grains considerably affects the crystal structure and the dielectric properties 78,127–129 . It is found that the tetragonality of BaTiO 3 decreases with decreasing size of the grains and is completely absent for very small particles (<70 nm).…”

Formation of Sol–Gel In Situ Derived BTO/NZFO Composite Ceramics with Considerable Dielectric and Magnetic Properties

“…Ferroelectric/ferromagnetic materials, one member of the multiferroic material family, possess multiple properties combining both impressive dielectric and magnetic performance . In the past few years, a large part of work has been focused on perovskite‐based ceramics, which is a typical ceramic material first discovered with excellent dielectric, ferroelectric, and piezoelectric properties . A variety of composite materials can be prepared by introducing another constituent phase into perovskite matrix to modify the comprehensive performance of these potential candidate materials for wider applications, and many factors influencing the properties of the composite system, such as type and concentration of the fillers, preparation method, grain size, microstructure etc., have been revealed in previous reports …”