- Conference date: 23-26 July 2000
- Location: Ibaraki (Japan)
The Pb -edge EXAFS for was measured in the temperature range from 20 K to 873 K. Three types of atomic pairs, shorter Pb–O(1), medium Pb–O(2) and longer Pb–O(3) were analyzed independently. The former two Pb-O pairs show the “order-disorder” type phase transition; distance does not change through On the other hand the last one shows the “displacive” type; the interatomic distance decreases discontinuously at and the mean square relative displacement shows the soft mode behavior.
- Phase transitions
- Temperature measurement
- Extended X-ray absorption fine structure spectroscopy
- Interatomic distances
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