An electron diffraction study of the type II Bi{sub 2-x}Nb{sub x}O{sub 3+x} solid solution

Journal Article · Tue Oct 31 23:00:00 EST 1995 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/0022-4596(95)80046-R· OSTI ID:486279

Tang, D; Zhou, W ^[1]

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1. Univ. of Cambridge (United Kingdom)

The structural chemistry of the type II Bi{sub 2-x}Nb{sub x}O{sub 3+x} solid solution has been studied via computer simulation of the electron diffraction patterns. The Nb cations were found to exist in some Nb{sub 7}O{sub 30} and Nb{sub 18}O{sub 72} clusters which were in partially ordered arrangements in the {delta}-Bi{sub 2}O{sub 3} matrix, forming some incommensurate superstructures. Commensurage 11 x 11 x 11 superstructures in Bi{sub 17}Nb{sub 3}O{sub 33}, Bi{sup 9}NbO{sub 16}, and an 8 x 8 x 8 superstructure in Bi{sub 4}NbO{sub 8.5} derived from the {delta}-Bi{sub 2}O{sub 3} subcell have been proposed in order to approach the real structures.

• OSTI ID: 486279
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 2 Vol. 119; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
COMPUTERIZED SIMULATION
ELECTRON DIFFRACTION
NIOBIUM OXIDES
SOLID SOLUTIONS
STOICHIOMETRY