学術雑誌論文

学術雑誌論文

text

Physical Review B. 2004, 69(14), p. 144201

Thermal properties of close-packed Fe up to 400 GPa determined using Hugoniot functions

American Physical Society

英語

text

2004-04-01

https://doi.org/10.1103/PhysRevB.69.144201

Sano Y., Sano T.. Thermal properties of close-packed Fe up to 400 GPa determined using Hugoniot functions. Physical Review B - Condensed Matter and Materials Physics, 69, 14, 144201. https://doi.org/10.1103/PhysRevB.69.144201.

A quadratic equation for the temperature-independent Grüneisen coefficient γ was derived by a method in which the Walsh-Christian and Mie-Grüneisen equations are combined. Some previously existing ab initio temperature Hugoniots for hexagonal close-packed solid Fe are inaccurate because the constant-volume specific heats on the Hugoniots CVH, which are related uniquely to the solutions of the quadratic equation, have values that are too small. A CVH distribution in the solid phase range was demonstrated to agree approximately with a previous ab initio distribution. In contrast, the corresponding γ distribution was significantly different from the ab initio distribution in the lower pressure region, and the γ distribution in the liquid phase range had a considerably larger gradient than the ab initio distribution. The causes of these disagreements are clarified.

Copyright 2004 by the American Physical Society

89441

Thermal properties of close-packed Fe up to 400 GPa determined using Hugoniot functions

American Physical Society

英語

2004-04-01

Physical Review B

69

14

144201

https://doi.org/10.1103/PhysRevB.69.144201

https://hdl.handle.net/11094/89441