Radial distribution function analysis was made using neutron diffraction on several glasses along the NaA1Si308-KA1Si308 (albite-orthoclase) join as well as on a natural obsidian sample. Comparison of the interference functions in reciprocaI space shows a non-linear increase of the width of the first sharp diffraction peak which indicates a decrease of the medium-range order (MRO) with increasing K20 content. The observed changes in the MRO were correlated with the non-linear variation of the bulk transition temperature, Tg, and might reflect a strong temperature dependence of the corresponding liquid structures.
Zotov, N., Boysen, H., Romano, C., Dingwell, D.B.E.Y.Y. (1995). Neutron Diffraction study of feldspar glasses. Mixed alkali effect. JOURNAL OF NON-CRYSTALLINE SOLIDS, 124(1-2), 124-131 [10.1016/0022-3093(95)00300-2].
Neutron Diffraction study of feldspar glasses. Mixed alkali effect
ROMANO, Claudia;
1995-01-01
Abstract
Radial distribution function analysis was made using neutron diffraction on several glasses along the NaA1Si308-KA1Si308 (albite-orthoclase) join as well as on a natural obsidian sample. Comparison of the interference functions in reciprocaI space shows a non-linear increase of the width of the first sharp diffraction peak which indicates a decrease of the medium-range order (MRO) with increasing K20 content. The observed changes in the MRO were correlated with the non-linear variation of the bulk transition temperature, Tg, and might reflect a strong temperature dependence of the corresponding liquid structures.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
