X-Ray Absorption at High Pressure
- 30 January 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 40 (5), 334-336
- https://doi.org/10.1103/physrevlett.40.334
Abstract
Initial measurements are reported on the extended x-ray-absorption fine structure (EXAFS) of the Fe edge in Fe to 64 kbar and Fe to 21 kbar. With this new technique the Fe-Fe spacings are directly observed to vary in accordance with high-pressure x-ray diffraction measurements of the corresponding lattice parameters. In contrast, the Fe-S spacing in pyrite is found to be much less compressible. Pressure reduction of the mean-square deviations in the iron-ligand bond lengths are also given.
Keywords
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