Lattice dynamics of MgO at high pressure: Theory and experiment

Subrata Ghose, Michael Krisch, Artem R. Oganov, Alexandre Beraud, Alexey Bosak, Revansidha Gulve, Raghunandan Seelaboyina, Hexiong Yang, Surendra K. Saxena

Результат исследований: Вклад в журналСтатьярецензирование

30 Цитирования (Scopus)


The longitudinal acoustic and optical phonon branches along the Γ-X direction of MgO at 35 GPa have been determined by inelastic x-ray scattering using synchrotron radiation and a diamond-anvil cell. The experimentally observed phonon branches are in remarkable agreement with ab initio lattice dynamics results. The derived thermodynamic properties, such as the specific heat CV and the entropy S are in very good accord with values obtained from a thermodynamically assessed data set involving measured data on molar volume, heat capacity at constant pressure, bulk modulus and thermal expansion.

Язык оригиналаАнглийский
Номер статьи035507
ЖурналPhysical Review Letters
Номер выпуска3
СостояниеОпубликовано - 27 янв. 2006
Опубликовано для внешнего пользованияДа


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