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Olsen, J.S.; Buras, B.; Steenstrup, S.; Johansson, B.
Copenhagen Univ. (Denmark). H.C. Oersted Inst1983
Copenhagen Univ. (Denmark). H.C. Oersted Inst1983
AbstractAbstract
[en] High-pressure X-ray diffraction studies have been performed on YbH2 up to 28 GPa. A first order phase transition from an orthorhombic structure to a collapsed hexagonal structure with c/a = 1.34 has been observed at about 15 GPa. The transition is accompanied by a 5.2% decrease in volume. Fitting the V(P) data to Murnaghan's equation of state yields the bulk modulus B0 = 40.2 GPa and its pressure derivative B0' = 4.75 for the orthorhombic phase. For the hexagonal phase the bulk modulus is found to be B = B0 = 138 GPa independent of pressure, i.e. B0' = 0. (Auth.)
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1983; 29 p
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Report
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Numerical Data
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BREMSSTRAHLUNG, COHERENT SCATTERING, CRYSTAL LATTICES, CRYSTAL STRUCTURE, DATA, DIFFRACTION, ELECTROMAGNETIC RADIATION, EQUATIONS, HYDRIDES, HYDROGEN COMPOUNDS, INFORMATION, MECHANICAL PROPERTIES, NUMERICAL DATA, PHASE TRANSFORMATIONS, RADIATIONS, RARE EARTH COMPOUNDS, SCATTERING, YTTERBIUM COMPOUNDS
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