Location of deuteron sites in the proton conducting perovskite BaZr0.50In0.50O3−y

Phase transitions in the H+-conducting perovskite ceramics by the quasi-elastic neutron and high-pressure Raman scattering

“…As in the case of relaxor ferroelectrics, heterogeneity at the scale of the Raman probe is likely in particular an heterogeneous distribution of doping elements, and this may influence the Raman signature [39]. This can explain why a clear Raman signature is observed for cubic perovskites: See for instance the spectrum of deuterated BaZr 0.5 In 0.5 O 3 − δ compound for which the cubic structure was evidenced at 5 and 300 K by neutron diffraction [40]. As it is seen in Fig.…”

“…Thus, the elastic/quasi-elastic studies performed as the function of temperature and momentum transfer have been performed because of the availability of neutron sources [46][47][48] as for Yb-doped SrCeO 3 [49] and Ba[Ca (1+x)/3 Nb (2−x)/3 ]O 3−x/2 [50]. Neutron diffraction has been reported for rather similar perovskites, but measurements were made at low temperatures where no proton diffusion is expected [40].…”

Structural study and proton conductivity in Yb-doped BaZrO3

“…However, highresolution NPD data collected at low temperature can be useful for further studies. This is an approach, which has already been successfully used for deuterated BaZr 0.50 In 0.50 O 2.75 at 5 K by Ahmed et al [25] and for protonated BaCe 0.9 Y 0.1 O 2.95 at 4.2 K by Knight [24].…”

Structural and electrochemical properties of yttrium-doped barium zirconate by addition of CuO

“…It has high stability towards water and carbon dioxide than cerate-based proton conducting ceramics. A number of studies about this material have been carried out by many researchers [3][4][5][6][7][8][9]. In the latest studies yttrium-doped BaZrO 3 was used as electrolyte membranes in intermediate temperature ceramic fuel cells [10].…”