Details

Autor(en) / Beteiligte

• Holzapfel, Wilfried B

Titel

Anharmonicity in the equations of state of Cu, Ag, and Au and related uncertainties in the realization of a practical pressure scale

Ist Teil von

• Journal of physics. Condensed matter, 2002-11, Vol.14 (44), p.10525-10531

Ort / Verlag

IOP Publishing

Erscheinungsjahr

2002

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• For the realization of a practical pressure scale based on equation of state (EOS) data for selected calibrants, a detailed modelling of the thermal contributions is required. While 'parametric EOS' forms with their temperature-dependent parameters V sub 0 (T), K sub 0 (T), and K' sub 0 (T) are useful for limited ranges in pressure and temperature, the separate modelling of the zero-temperature and thermal contributions is more appropriate especially for wide temperature ranges under high pressures (Holzapfel W B, Hartwig M and Sievers W 2001 J. Phys. Chem. Ref. Data 30). The remaining uncertainties due to explicit anharmonic contributions beyond the implicit contributions of the quasiharmonic approximation are therefore discussed here in more detail.