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Staun Olsen, J.; Steenstrup, S.; Gerward, L.
Niels Bohr Inst. for Astronomi, Fysik og Geofysik, Copenhagen (Denmark). Oersted Lab1995
Niels Bohr Inst. for Astronomi, Fysik og Geofysik, Copenhagen (Denmark). Oersted Lab1995
AbstractAbstract
[en] High-pressure x-ray diffraction was performed on YbH2 and YbD2 up to 61 GPa. A first order transition from an orthorhombic structure to a hexagonal structure has been found at about 16 GPa. Bulk modulus B0 and its pressure derivative Bo' in the orthorhombic phase were found to be: YbH2, 36 GPa and 6.7, YbD2, 55 GPa and 3.7. In the hexagonal phase: YbH2, 132 GPa and 0.4, YbD2, 154 GPa and 0.4. A valence change seems to start in the hexagonal phase. (au)
Secondary Subject
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1995; 3 p
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