Abstract
X-ray absorption fine structure (XAFS) measurements of mixed salts RbxK1-xBr and RbBryCl1-y at their congruent melting points compositions reveal that their actual structure buckles about the NaCl average structure with an rms angular deviation from collinearity of 7 9°. XAFS measures the buckling directly through three-body correlations, and verifies the homogeneity and randomness of the mixtures. The characteristic ionic sizes are found to be dependent on concentration, causing changes to 0.1 in interatom bond distances. A computer simulation based on the information from XAFS and diffraction displays the actual structure of the salts.
| Original language | English |
|---|---|
| Pages (from-to) | 3485-3488 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 71 |
| Issue number | 21 |
| DOIs | |
| State | Published - 1993 |
| Externally published | Yes |