COMMENTS ON THE STRUCTURE OF CRYSTALLINE AND VITREOUS AGPO3

Vitreous AgPO3 is of technological interest as a host for solid-state electrolytes, whereas its crystalline counterpart is a good model syst em for structural and transport modelling. In this paper we present P- 31 NMR-MAS evidence of two crystallographically non-equivalent phospho rous atoms in AgPO3 crystal. Both glass and crystal are made of long c hains of PO4 tetrahedra connected by comers. The glass structure is ch aracterized by a wide distribution of bond lengths and angles. (C) 199 7 Elsevier Science Ltd.