Investigation on energy storage properties and thermally stable dielectric constant for high temperature electronic device applications in the holmium substituted Na0.5Bi0.5TiO3

Effect of Electrical Poling on the Structural, Dielectric, and Photoluminescence Properties of Eu³⁺ Substituted Eco-Friendly Ferroelectric Material Na_0.5Bi_0.5TiO₃

“…Grain size is found 3.32±0.43 µm. Obtain grain size is higher than the reported data of pure NBT material grain size [11]. Fig.…”

“…Maximum dielectric constant temperature (Tm) with diffuse phase transition (DPT) is found at 264˚C for poled and unpoled ceramics. Compared to pure NBT, broad DPT in the dielectric curve is observed for both poled and unpoled ceramics [11]. DPT is mainly associated with compositional inhomogeneity and disorderness at A and B-sites of ABO3 perovskite.…”

“…Substitution of Eu 3+ at the A-site of the NBT adds extra ion at the A-site, which enhances degree disorder and compositional fluctuation and randomness in the distribution of Eu 3+ , Bi 3+, and Na 1+ at the A-site. Thus, enhanced broadness at Tm due to Eu 3+ substitution manifests that chemical-induced DPT type relaxor nature in the ceramic [11][12][13]. To illustrate the electromechanical coefficient (kp), room temperature εˈ vs frequency plot is measured for poled ceramics in the range of 20 Hz to 10 6 Hz.…”