Germanium at high pressures

X-ray diffraction experiments have been carried out on Ge in a diamond anvil cell to 26 GPa. The pressure at the transition to the metallic phase (II) has been studied in different pressurizing media, giving 10.6 plus/minus 0.05 GPa in a quasihydrostatic medium (4:1 methanol:ethanol mixture), 9.8 pl...

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Bibliographic Details
Published in:	Physical review. B, Condensed matter Vol. 34; no. 1; pp. 362 - 368
Main Authors:	MENONI, C. S, JING ZHU HU, SPAIN, I. L
Format:	Journal Article
Language:	English
Published:	Woodbury, NY American Physical Society 01-07-1986 American Institute of Physics
Subjects:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Electron states Exact sciences and technology Excitons and related phenomena Physics Non metal Phase transformation Germanium Electronic transition Experimental study X ray diffraction High pressure Semiconductor metal transition
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Summary:	X-ray diffraction experiments have been carried out on Ge in a diamond anvil cell to 26 GPa. The pressure at the transition to the metallic phase (II) has been studied in different pressurizing media, giving 10.6 plus/minus 0.05 GPa in a quasihydrostatic medium (4:1 methanol:ethanol mixture), 9.8 plus/minus 0.1 GPa in NaCl, and 8.1 plus/minus 0.3 GPa when the sample was compressed directly between the anvils. The compression curve for phase II has been fitted to a modified Murnaghan equation. Upon release of pressure the transformation from phase II to III (tetragonal) was found at 7.6 plus/minus 0.05 GPa. It was found that the details of the transition depended on the stress condition and rate of decompression. 50 ref.--AA
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1
ISSN:	0163-1829 1095-3795
DOI:	10.1103/PhysRevB.34.362