Synthesis crystal structure and ionic conductivity of Ca{sub 0.5}Bi{sub 3}V{sub 2}O{sub 10} and Sr{sub 0.5}Bi{sub 3}V{sub 2}O{sub 10}
Journal Article
·
· Journal of Solid State Chemistry
- Division of Chemical Sciences, Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012 (India)
Two new compounds Ca{sub 0.5}Bi{sub 3}V{sub 2}O{sub 10} and Sr{sub 0.5}Bi{sub 3}V{sub 2}O{sub 10} have been synthesized in the ternary system: MO-Bi{sub 2}O{sub 3}-V{sub 2}O{sub 5} system (M=M{sup 2+}). The crystal structure of Sr{sub 0.5}Bi{sub 3}V{sub 2}O{sub 10} has been determined from single crystal X-ray diffraction data, space group P1-bar and Z=2, with cell parameters a=7.1453(3)A, b=7.8921(3)A, c=9.3297(3)A, {alpha}=106.444(2){sup o}, {beta}=94.088(2){sup o}, {gamma}=112.445(2){sup o}, V=456.72(4)A{sup 3}. Ca{sub 0.5}Bi{sub 3}V{sub 2}O{sub 10} is isostructural with Sr{sub 0.5}Bi{sub 3}V{sub 2}O{sub 10}, with, a=7.0810(2)A, b=7.8447(2)A, c=9.3607(2)A, {alpha}=106.202(1){sup o}, {beta}=94.572(1){sup o}, {gamma}=112.659(1){sup o}, V=450.38(2)A{sup 3} and its structure has been refined by Rietveld method using powder X-ray data. The crystal structure consists of infinite chains of (Bi{sub 2}O{sub 2}) along c-axis formed by linkage of BiO{sub 8} and BiO{sub 6} polyhedra interconnected by MO{sub 8} polyhedra forming 2D layers in ac plane. The vanadate tetrahedra are sandwiched between these layers. Conductivity measurements give a maximum conductivity value of 4.54x10{sup -5} and 3.63x10{sup -5}Scm{sup -1} for Ca{sub 0.5}Bi{sub 3}V{sub 2}O{sub 10} and Sr{sub 0.5}Bi{sub 3}V{sub 2}O{sub 10}, respectively at 725 deg. C.
- OSTI ID:
- 20658229
- Journal Information:
- Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 12 Vol. 177; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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