Influence of aliovalent cation substitution on structural and electrical properties of Gd₂(Zr_1−xM_x)₂O_7−δ (M = Sc, Y) systems

Abstract

Fluorite-type zirconate compositions: Gd2(Zr1−xMx)2O7−δ (M = Sc, Y; x = 0, 0.1, 0.2, 0.3, 0.4) were prepared and the influence of aliovalent cation substitution on the structural and electrical properties were investigated in detail and correlated.

Innovation of Novel Stone-Like Perovskite Structured Calcium Stannate (CaSnO3): Synthesis, Characterization, and Application Headed for Sensing Photographic Developing Agent Metol

“…The presence of an aliovalent cation in the B site of ABX 3 inevitably improves the redox character in perovskite-type nanomaterials . On sorting of some metals as aliovalent cations, an increase in cationic size difference possesses higher lattice structural order, and this cationic substitution induces the ordering/disordering transitions which lead to enhancements in electrical properties . In light of this, in recent years, tin (Sn) oxide-based PMs with alkaline earth metals (ASnO 3 , A = Ca, Sr, Ba) were fascinating for the aforesaid wider uses, especially in electrocatalysis, due to their higher dielectric property, enhanced activity, and low cost .…”

“…7 On sorting of some metals as aliovalent cations, an increase in cationic size difference possesses higher lattice structural order, and this cationic substitution induces the ordering/disordering tran-sitions which lead to enhancements in electrical properties. 8 In light of this, in recent years, tin (Sn) oxide-based PMs with alkaline earth metals (ASnO 3 , A = Ca, Sr, Ba) were fascinating for the aforesaid wider uses, especially in electrocatalysis, due to their higher dielectric property, enhanced activity, and low cost. 9 Sn chipping in for the PMs has increased the capabilities to enhance the dielectric property at a constant rate, and the presence of large surface area creates more electrochemical active sites.…”

Multi-doped ceria-based composite as a promising low-temperature electrolyte with enhanced ionic conductivity for steam electrolysis

“…23 The value of the grain-boundary conductivity indicates the effect of microstructural characteristics on the ionic transport in the electrolyte. 87 For 5LB1C-1, the presence of bulk and grain boundary curves is hard to identify by the naked eye, but the entire cell resistance could still be calculated from the high-frequency range of the Nyquist plot. At low temperatures (below 550 °C), a significant decrease in overall conductivity is apparent.…”