A review of proton migration and interaction energies in doped barium zirconate

Individual and Simultaneous Electrochemical Detection of Allura Red and Acid Blue 9 in Food Samples Using a Novel La2YCrO6 Double Perovskite Decorated on HLNTs as an Electrocatalyst

“…The A site of the perovskite structure can accommodate either a rare-earth or an alkaline earth element, while the B site allows for the presence of two distinct transition metal (TM) elements. This unique arrangement provides a remarkable level of flexibility and freedom, surpassing that of a simple ABO 3 perovskite structure. − The electrical behavior of oxides that contain transition metals is predominantly determined by the interplay between the cations of the transition metals and the anions of oxygen . Layered double perovskites, namely, ReCuM 2 O 5+δ (Re = La, Pr, Sm, Nd, Gd, Y; M = Zr), have garnered significant scientific interest in recent times due to their efficient oxygen-ion transport and surface exchange capabilities. − Rare-earth-based double perovskites have garnered significant attention across various domains, including spintronics, catalysis, magnetic materials, photodetectors, supercapacitors, and electrode materials. − Sr 2 NiMoO 6 double perovskites were synthesized by Liu et al through the sol–gel method and subsequently employed as gas sensors .…”

Sintering-induced cation displacement in protonic ceramics and way for its suppression

“…Through the Grotthuss mechanism, proton is introduced into the oxide lattice through the hydration of oxygen vacancies, then the proton is hopping between neighboring oxygen ion sites. The oxygen vacancies are introduced through the doping of Ce and Zr sites in BaCeO 3 and BaZrO 3 , respectively, with a lower oxidation state cation(s) 29 , 30 . To meet the tolerance factor requirement for a stable perovskite lattice, the ionic radius of such dopants should be similar to those of the hosts, so Y 3+ and Yb 3+ are the most frequently used as the dopants 31 , 32 .…”