期刊
PHYSICAL REVIEW B
卷 99, 期 13, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.99.134101
关键词
-
资金
- DOE NNSA [DE-NA0002007]
- U.S. Department of Energy (DOE)/National Nuclear Security Administration [DE-NA0002442]
- DOE Office of Science [DE-AC02-06CH11357]
Solid-solid and solid-liquid transformations were examined in Ge(100), using in situ x-ray diffraction measurements during uniaxial strain compression and release. For final stresses above 15.7 GPa, the Ge transformed to a highly textured tetragonal beta-Sn phase. At 31.5 GPa and above, Ge transformed to the molten phase. Full stress release (uniaxial strain) from the beta-Sn phase, from the melt boundary, and from the completely molten phase, resulted in reversion to an untextured cubic diamond (cd) phase. These findings demonstrate that the cd to beta-Sn phase change is reversible, and that recrystallization from the liquid phase occurs on nanosecond timescales during release.
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