High-pressure and high-temperature in situ X-ray diffraction study of iron and corundum to 68 GPa using an internally heated diamond anvil cell |
| |
| Authors: | Leonid S Dubrovinsky Surendra K Saxena Peter Lazor |
| |
| Institution: | (1) Institute of Earth Sciences, Uppsala University, S-75236 Uppsala, Sweden, SE |
| |
| Abstract: | Using powder X-ray diffraction of heated solids to pressures reaching 68 GPa, the pressure-volume-temperature (PVT) data on
corundum Al2O3 and ɛ-Fe were determined with the following results:
*Corundum,*Iron, *Al2O3*ɛ-Fe
Isothermal bulk*258 (2)*164 (3) modulus K'300, 1 (GPa)
Pressure derivative K300, 1*4.88 (4)*5.36 (16)
Temperature derivative*–0.020 (2)*–0.043 (3) (∂K
T,1
/∂T)
P
(GPa/K)
Molar volume V300,1*25.59 (2)*6.76 (2) (cm3/mol)
Isobaric thermal expansion at 1 atm (0.101 MPa) is given by (K–1):
α
T
=2.6 (2) 10–5+1.81 (9) 10–9
T–0.67 (6)/T
2 for corundum, and α
T
=5.7 (4) 10–5+4.2 (4) 10–9
T–0.17 (7)/T
2 for iron ɛ-Fe.
Received: 1 March 1997 / Revised, accepted: 21 August 1997 |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
