Journal
CHINESE PHYSICS LETTERS
Volume 27, Issue 8, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0256-307X/27/8/086401
Keywords
-
Categories
Funding
- National Natural Science Foundation of China
- Chinese Academy of Sciences [10979053, KJCX2-SW-N20]
- National Natural Science Foundation of China [40873052]
- Guizhou Foundation for Science and Technology [[2010]2231]
Ask authors/readers for more resources
The phase relations and pressure volume dependences of galena (PbS) under high pressure and high temperature are investigated by means of in situ observation using resistance heating in a diamond anvil cell and synchrotron radiation. The phase transition from NaCl type to TlI type takes place at approximately 2.4 GPa. A fit to the high temperature third-order Birch-Murnaghan equation of state yields an isothermal bulk modulus K-0 = 37(3) GPa, and its pressure derivative K-0' = 3.6(3), the temperature derivative of the bulk modulus (partial derivative K/partial derivative T)(P) = -0.022(9) GPaK(-1), and the thermal expansion coefficient alpha(0) = 2.2(5) x 10(-5) K-1 for TlI-type galena. The linear compressibilities beta along a, b and c directions of TlI type is elastically anisotropic (beta(a) = 3.4 x 10(-3) GPa(-1), beta(b) = 1.4 x 10(-4) GPa(-1) and beta(c) = 1.6 x 10(-3) GPa(-1)). We obtain the temperature derivative of the bulk modulus (partial derivative K/partial derivative T)(P) and thermal expansion coefficient alpha(0) for TlI-type galena for the first time.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available