کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1594674 | 1515686 | 2009 | 4 صفحه PDF | دانلود رایگان |
In order to verify pressure scales of gold, the atomic-volume dependence of Debye temperature under high pressure up to 14 GPa was measured based on Debye–Waller factor by an X-ray diffraction method. High-pressure and high-temperature X-ray powder diffraction patterns were collected by an energy-dispersive method using synchrotron radiation. The X-ray Debye temperature under high pressure was calculated from the integrated intensity ratio between the diffraction patterns collected at two different temperatures. The atomic-volume dependence of the Debye temperature obtained in the present study was consistent with that predicted by a first-principles calculation, in which Debye temperature and Grüneisen parameter of the volume at ambient condition were ΘD0=180K and γ0=3.16γ0=3.16, respectively.
Journal: Solid State Communications - Volume 149, Issues 9–10, March 2009, Pages 371–374