Raman spectroscopic study of high-pressure phase transitions in cristobalite

1994 ◽  
Vol 21 (8) ◽  
Author(s):  
DavidC. Palmer ◽  
RussellJ. Hemley ◽  
CharlesT. Prewitt
Keyword(s):  
High Pressure ◽  
Phase Transitions ◽  
Spectroscopic Study ◽  
High Pressure Phase ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study ◽  
Pressure Phase

Raman Spectroscopic Studies of the Phase Transitions in Hexane at High Pressure

2005 ◽  
Vol 59 (12) ◽  
pp. 1498-1500 ◽  
Author(s):  
Wang Huai ◽  
Zheng Haifei ◽  
Sun Qiang
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Phase Transitions ◽  
Spectroscopic Study ◽  
Spectroscopic Studies ◽  
Frequency Bandwidth ◽  
Cubic Zirconia ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study

Raman spectroscopic study of n-hexane was carried out in a cubic zirconia anvil cell up to approximately 2.0 GPa. Under high pressure, the C–H stretching region of the spectrum at 2850–3000 cm−1 shows measurable changes in frequency, bandwidth, and intensity. These Raman bands shift towards higher frequencies with increasing pressure. At about 1.4 GPa, phase transition from liquid to solid was induced by compression, as was simultaneously observed with the built-in microscope.

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