High-Pressure Transformation of Al 2 O 3
- 7 November 1997
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 278 (5340), 1109-1111
- https://doi.org/10.1126/science.278.5340.1109
Abstract
X-ray diffraction measurements indicate that ruby (Cr 3+ doped α-Al 2 O 3 ) transforms to the Rh 2 O 3 (II) structure when heated to temperatures exceeding ∼1000 kelvin at pressures above ∼100 gigapascals, in agreement with predictions from ab initio quantum mechanical calculations. The high-pressure phase did not quench upon decompression to ambient pressure, and the occurrence of this phase transformation may affect interpretations of static (diamond-anvil cell) and dynamic (shock-wave) experiments at ultra-high pressures.This publication has 20 references indexed in Scilit:
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