An extended thermal pressure equation of state for sodium fluoride.

• Tác giả: Ross J Angel, Lewis A Clough, Dominik Daisenberger, Nicholas P Funnell, Joseph A Hriljac, Matic Lozinšek, Simon Parsons, Christopher J Ridley
• Ngôn ngữ: eng
• Ký hiệu phân loại: 331.2572 Conditions of employment
• Thông tin xuất bản: United States : Journal of applied crystallography , 2025
• Bộ sưu tập: NCBI
• ID: 463775

Tóm tắt

The effect of pressure and temperature on the unit-cell volume of NaF has been measured by X-ray powder diffraction at ambient pressure between 12 and 300 K and neutron powder diffraction up to 5 GPa between 140 and 350 K. These data have been combined with high-pressure volume data at 300 and 950 K to 25 GPa and adiabatic bulk modulus data to 650 K to define an equation of state for NaF relating molar volume to both temperature and pressure. The model combines a fourth-order Birch-Murnaghan equation of state at 295 K with a Mie-Grüneisen-Debye model for thermal pressure. The parameters of the model set at 295 K and ambient pressure are as follows: reference unit-cell volume