Electrical properties of barium titanate stannate functionally graded materials

Structural and impedance spectroscopy characteristics of BaCO3/BaSnO3/SnO2 nanocomposite: observation of a non-monotonic relaxation behavior

“…[11][12][13][14] This T max value is much lower than 800 K for Te modied BaSnO 3 and larger than 200 K for highly doped Pb-BaSnO 3 . 45 Considering the inhomogeneity within the nanocomposite (see Raman, XRD and TEM data), it is obvious that atoms undergo a notable displacement with respect to their high-symmetry locations. Hence, there is a local dipole moment in both Ba-O and Sn-O planes which gives rise to spontaneous polarization.…”

Enhanced high-temperature electrical response of hydroxyapatite upon grain size refinement

“…1. Impedance spectra were slightly depressed, and GI (high frequency) and GB (low frequency) contributions were of comparable magnitude, differing from that of conventional electroceramics where GB resistance is usually much higher [15]. Also, significant overlapping of GI and GB impedance arcs were observed.…”

Sintering Effects on Microstructure and Electrical Properties of CaCu 3 Ti 4 O 12 Ceramics

“…It is known that the room temperature resistivity of perovskite materials depends mainly on the microstructural development associated with grain growth; precisely, resistivity increases with an increase of density and decrease of average grain size. 13 Here, it can be emphasized that IS spectra without point dissipation, indicating high-quality ceramics. This is especially important for electronic ceramics meaning no insulator interfaces (cracks and/or delamination) were produced during powders processing and hightemperature sintering.…”