Characterization and estimation of dielectric constant of electrospun BaTiO3 nanofibers at different calcination temperatures using theoretical models

Synergistic Effect of Al2O3@BaTiO3–BNNSs Hybrid Fillers for Improved Energy Storage and Thermal Conductivity Properties of PVDF-Based Composites

“…The morphologies of BT NFs, AO@BT NFs, h-BN, and BNNSs are provided by SEM and TEM in Figure and Figure S1. In comparison with as-electrospun nanofibers (Figure a,b), the diameter and length of the calcined BT NFs and AO@BT NFs decrease (Figure d,e), and the rough surfaces can be clearly identified from the TEM observation (Figure S1a,b), which is due to the organic decomposition and the grain coarsening during calcination . The element mapping of AO@BT NFs in Figure g evidences the uniform dispersion of Al 2 O 3 nanoparticles in the BT fibers.…”

“…In comparison with as-electrospun nanofibers (Figure 2a,b), the diameter and length of the calcined BT NFs and AO@BT NFs decrease (Figure 2d,e), and the rough surfaces can be clearly identified from the TEM observation (Figure S1a,b), which is due to the organic decomposition and the grain coarsening during calcination. 27 The element mapping of AO@BT NFs in Figure 2g evidences the uniform dispersion of Al 2 O 3 nanoparticles in the BT fibers. It can be seen from Figure 2c,f that the tightly stacked h-BN has been peeled off into the lamellar BNNSs, which present a distinct Tyndall effect in water (Figure S1c), indicating the effectiveness of liquid-phase exfoliation.…”

Ho-Mn co-doping in barium titanate piezoceramics via sol-gel process followed by microwave and conventional heating

“…The dielectric constant was calculated from the following equation (3). In this equation, t is the thickness, c is the capacitance, A is the surface area, ε 0 is the vacuum permittivity and ε r is the relative permittivity [32,34].…”