Neutron diffraction and 1 H rigid lattice wide-line NMR studies of powder (K, Bi III, Bi V) pyrochlores

…, F Abraham, D Thomas, C Doremieux-Morin…

Index: Trehoux, Jacques; Abraham, Francis; Thomas, Daniel; Doremieux-Morin, Claudine; Arribart, Herve Journal of Solid State Chemistry, 1988 , vol. 73, p. 80 - 91

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Citation Number: 12

Abstract

Abstract The structure of an A cation-deficient pyrochlore (K, Bi)⋍ 1.5 Bi 2 O∼ 6 (H 2 O)∼ 1 has been investigated by powder neutron diffraction using a deuterated sample. Main results of previous X-ray work are confirmed: 25% of A sites are empty; only a small amount of oxygen is found in 8 (b) positions, a greater proportion being located in 32 (e) positions which are displaced toward the A vacancy. The latter oxygen atoms belongs to a heavy ...