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Structure of the Complex Arsenates NaCa2M2+2 (AsO4)3 (M2+ = Mg, Ni, Co): First Experimental Evidence of a Garnet-Alluaudite Reversible Polymorphism

✍ Scribed by S. Khorari; A. Rulmont; R. Cahay; P. Tarte


Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
362 KB
Volume
118
Category
Article
ISSN
0022-4596

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The Arsenates NaCa2M2+2(AsO4)3(M2+=Mg, N
✍ S. Khorari; A. Rulmont; P. Tarte 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 279 KB

Cationic replacements in the arsenates NaCa 2 M 2 > > 2 (AsO 4 ) 3 (M 2 > > ‫؍‬ 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