摘要Hydrostaticity under high pressure of several materials from solid, fluid to gas, which are widely used as pressure media in modern high-pressure experiments, is investigated in diamond anvil cells. Judging from the R-line widths and R1-R2 peak separation of Ruby fluorescence, the inert argon gas is hydrostatic up to about 30GPa. The behavior of silicon oil is found to be similar to argon at pressures less than 10GPa, while the widening of R-lines and increase of R1-R2 peak separation at higher pressure loads indicate a significant degradation of hydrostaticity. Therefore silicon oil is considered as a good pressure medium at pressures less than 10GPa but poor at higher pressures.
Abstract：Hydrostaticity under high pressure of several materials from solid, fluid to gas, which are widely used as pressure media in modern high-pressure experiments, is investigated in diamond anvil cells. Judging from the R-line widths and R1-R2 peak separation of Ruby fluorescence, the inert argon gas is hydrostatic up to about 30GPa. The behavior of silicon oil is found to be similar to argon at pressures less than 10GPa, while the widening of R-lines and increase of R1-R2 peak separation at higher pressure loads indicate a significant degradation of hydrostaticity. Therefore silicon oil is considered as a good pressure medium at pressures less than 10GPa but poor at higher pressures.
YOU Shu-Jie;CHEN Liang-Chen;JIN Chang-Qing. Hydrostaticity of Pressure Media in Diamond Anvil Cells[J]. 中国物理快报, 2009, 26(9): 96202-096202.
YOU Shu-Jie, CHEN Liang-Chen, JIN Chang-Qing. Hydrostaticity of Pressure Media in Diamond Anvil Cells. Chin. Phys. Lett., 2009, 26(9): 96202-096202.
[1] Jayaraman A 1983 Rev. Mod. Phys. 55 65 Mao H K and Hemley R J 1994 Rev. Mod. Phys 66671 [2] Eremets M I 1996 High Pressure Experimental Methods,(Oxford: Oxford University Press) [3] Meade C and Jeanloz R 1988 J. Geophys. Res. 933261-9 [4] Meade C and Jeanloz R 1990 Phys. Rev. B 422532-5 [5] Angel R J, Bujak M, Zhao J, Gatta G D and Jacobsen S D2007 J. Appl. Cryst. 40 26 [6] Hu J Z, Xu J, Somayazulu M, Guo Q, Hemley R and Mao H K2002 J. Phys.: Condens. Matter 14 10479 [7] Ragan D D, Clarke D R and Schiferl D 1996 Rev. Sci.Instrum. 67 494 [8] Shen Y R, Kumar R S, Pravica M and Nicol M F 2004 Rev. Sci.Instrum. 75 4450 [9] Mao H K, Bell P M, Shaner J W and Steinberg D J 1978 J. Appl. Phys. 49 3276-83 [10] Piermarini G J, Block S and Barnett J D 1973 J.Appl. Phys. 44 5377 [11] Asaumi K and Ruoff A L 1986 Phys. Rev. B 335633-6 [12] Mao H K, Xu J and Bell P M 1986 J. Geophys. Res. 91 4673-76 [13] Liu H Z, Hu J Z, Shu J F, H\"{ausermann D and Mao H K2004 Appl. Phys. Lett. 85 1973
2009, Vol. 26 
