Crystal data for high-pressure phases of silicon

Crystal data for high-pressure phases of silicon

Hu, Jing Zhu ; Merkle, Larry D. ; Menoni, Carmen S. : Spain, Ian L.

Support for this work by NASA, Ames Laboratory, grant NAG2-157.

X-ray-diffraction data have been obtained on Si in a diamond anvil cell to pressures of ~50 GPa. Crystallographic data are presented in phase I (cubic, diamond), II (tetragonal, B-Sn),V (simple hexagonal), VII (hexagonal close-packed), and the metastable phase III [body-centered-cubic (BC8)] and on the coexistence of the phases. Comparison is made between these data and the predictions of ab initio calculations for these structures and their equations of state.

Colorado State University. Libraries

1986

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c2000 American Physical Society