Crystal structure of the ordered perovskite: BaBi{sub 0.5}Sb{sub 0.5}O{sub 3}
Journal Article
·
· Materials Research Bulletin
- Leiden Univ. (Netherlands)
- Univ. of Nijmegen (Netherlands). Dept. of Inorganic Chemistry
The structure of BaBi{sub 0.5}Sb{sub 0.5}O{sub 3} is determined by single crystal X-ray diffraction. It is an ordered perovskite, having rhombohedral symmetry, space group R {bar 3}m (No. 166), with lattice parameters a = 6.043(1) {angstrom} and {alpha} = 60.05(2)(degree). The final agreement factor R based on F{sup 2} for 6420 reflections was 0.052. An important structural feature of BaBi{sub 0.5}Sb{sub 0.5}O{sub 3} is the displacements of oxygen atoms from their ideal positions within the pseudo-cubic [110]{sub p} planes, creating an alternative arrangement of (larger) BiO{sub 6} and (smaller) SbO{sub 6} octahedra. Therefore, the valence states of bismuth and antimony can be readily assigned as Bi(III) and Sb(V).
- OSTI ID:
- 514707
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 6 Vol. 32; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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