Hydrostatic limits of 11 pressure transmitting media

Abstract

We present a systematic and comparative study of the pressure-induced solidification of 11 frequently used pressure transmitting fluids using the ruby fluorescence technique in a diamond anvil cell. These fluids are 1 : 1 and 5 : 1 iso-n pentane, 4 : 1 deuterated methanol–ethanol, 16 : 3 : 1 deuterated methanol–ethanol-water, 1 : 1 FC84-FC87 Fluorinert, Daphne 7474, silicone oil, as well as nitrogen, neon, argon and helium. The data provide practical guidelines for the use of these fluids in high pressure experiments up to 50 GPa.

Structural properties of PbVO3perovskites under hydrostatic pressure conditions up to 10.6 GPa

“…This type of valence change for an ion at high pressures and high temperatures was also found in the synthesis of PbCrO 3 perovskite [22]. The examined sample was then transferred to another DAC in which a liquid methanol-ethanol-water mixture at a volume ratio of 16:3:1 was used as a pressure medium to sustain a hydrostatic environment [23].…”

Cobalt ferrite nanoparticles under high pressure

“…19 A 4:1 methanol-ethanol mixture was used as PTM. 20 Special attention was paid during sample loading into the DAC to avoid sample overloading, which leads to sample bridging under compression affecting the measurements. 16 The experiments were performed in the angle-dispersive configuration with a monochromatic beam with wavelength of 0.620231(5) Å .…”

Structural study of α-Bi2O3under pressure

“…In this pressure range, all diffraction peaks markedly shift to larger diffraction angles as pressure increases (see Figure 2(a)). At 6.6 GPa, Ar solidifies (fcc structure) and the peaks (111) and (200) related to this structure are detectable [23,24]. The Bragg peaks associated to Ar can be easily identified since its peaks have a different pressure evolution that those of the sample (Ar is much more compressible than Bi 2 O 3 ).…”