CO(III)–NI(II) double substituted bismuth vanadate: synthesis, phase stabilization, and structural and electrical characterization

Effect of Cu–Al double substitution on the electrical properties of Bi4V2O11

“…The dielectric permittivity has been determined at a constant frequency of 1 MHz. [15,20] The dielectric constant was calculated using the equation, e D (C/e) £ (L/A), where e is the permittivity of free space (8.854 £ 10 ¡14 F/cm).…”

Local structure in a tetravalent-substituent BIMEVOX system: BIGEVOX

“…450 C) that the fully disordered tetragonal g-phase is observed. A huge variety of cations have been successfully used as substituents, [16][17][18][19][20][21][22] most notably divalent cations such as Cu 2+ and Ni 2+ where conductivities of 1.0 Â 10 À1 S cm À1 and 1.1 Â 10 À1 S cm À1 , respectively, have been achieved at 600 C for the x ¼ 0.10 compositions. 14,23,24 Interestingly, despite the different valence states of the substituent cations, similar conductivities at 600 C have also been reported in tetravalent (BITIVOX, x ¼ 0.125), 25 trivalent (BIALVOX, x ¼ 0.13), 26 and monovalent (e.g.…”

Enhancement of the Ionic Conductivity in Electric Field-Assisted Pressureless Sintered BITIVOX Solid Electrolytes

“…BIMEVOX solid electrolytes are obtained by partially replacing V 5+ with pentavalent or aliovalent ions in the Bi 4 V 2 O 11 compound. Several BIMEVOX compounds have been synthesized with single or double replacements with several different metallic ions, Li + , Cu 2+ , Co 2+ , Ni 2+ , Zn 2+ , Fe 3+ , Al 3+ , Ti 4+ , Zr 4+ , Ge 4+ , Sn 4+ , Pb 4+ , Nb 5+ [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. The structural phases of Bi 4 V 2 O 11 are monoclinic (named alpha), orthorhombic from 445 • C (beta) and tetragonal from 567 • C (gamma), the gamma phase with the highest oxygen ion conductivity [23,32].…”