New solid electrolytes based on bismuth oxide

The exchange interactions and the state of manganese atoms in the solid solutions in Bi3NbO7 of cubic and tetragonal modifications

“…the susceptibilities obey Curie-Weiss law over the whole temperature range under study. Weiss constant is negative, which points to antiferromagnetic exchange interactions since the ground states of manganese atoms in any stable valence state are either singlet or dublet (Mn(II) 6 A 1g ; Mn(III) 5 E g ; Mn(IV) 4 A 2g ), which means that the effective magnetic moment of single atoms does not depend on temperature, and Weiss constant may be associated only with exchange interactions. The isotherms of magnetic susceptibility [ Mn para χ -x] for the solid solutions of cubic and tetragonal modifications are given in Fig.…”

“…The area of practical application of δ-Bi 2 O 3 is limited by a narrow temperature interval of its thermodynamic stability (730-825°С) [5]. It is possible to stabilize δ-Bi 2 O 3 by partial iso-and heterovalent replacement of bismuth atoms by atoms of transition elements (Y, Nb, Ta, W) or lanthanides (Gd, Er) [6][7][8][9][10]. It is found [11,12] that such solid solutions show mixed electronic and ionic conductivity and are promising for use in electrochemical devices.…”

Recent progress in solid oxide and lithium ion conducting electrolytes research

“…However, composite materials employing compounds with the same chemical composition find application as negative electrodes in SOFCs that utilize doped CeO 2 as electrolyte. Shuk et al recently reviewed the electrical transport properties of Bicontaining oxide-ion-conducting electrolytes [53].…”

Synthesis, surface tension, optical and dielectric properties of bismuth oxide thin film

“…Until now, five polymorphic forms of bismuth oxides were obtained: two stable polymorphs, namely α and δ phases (α-Bi 2 O 3 is monoclinic, δ-Bi 2 O 3 is face-centered cubic), and three metastable phases, i.e. β, γ and ω (β-Bi 2 O 3 is tetragonal, γ-Bi 2 O 3 is body-centered cubic, ω-Bi 2 O 3 is triclinic) [5][6][7][8][9][10][11][12][13]35]. For nanometric thicknesses, BiO is predominant phase, while in case of micronic films, α-Bi 2 O 3 and Bi 2 O 3 are the main phase components [11].…”