Closest packing in dense oxides: The structure of a polymorph of Co3(AsO4)2
β Scribed by R. Gopal; J.S. Rutherford; B.E. Robertson
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 918 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0022-4596
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The arsenate Na3In2(AsO4)3 has been synthesized and investigated by X-ray diffraction and vibrational spectroscopy. According to a Rietveld analysis, it is monoclinic, space group C2/c, Z β«Ψβ¬ 4, with a β«Ψβ¬ 12.6025 (1), b β«Ψβ¬ 13.1699 (1), c β«Ψβ¬ 6.8335 (1) A s , β«2247.311Ψβ¬ (5). It has an alluaudite-l
Cationic replacements in the arsenates NaCa 2 M 2 > > 2 (AsO 4 ) 3 (M 2 > > β«Ψβ¬ Mg, Ni, Co) have a strong influence on their garnetalluaudite polymorphism. The preferential formation of an alluaudite phase (at the expense of the garnet phase) is induced by the following cationic modifications: (i) T
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