Raman Scattering Studies of the High-Pressure Stability of Pentaerythritol Tetranitrate, C(CH2ONO2)4

2005 ◽  
Vol 109 (41) ◽  
pp. 19223-19227 ◽  
Author(s):  
Kristina E. Lipinska-Kalita ◽  
Michael G. Pravica ◽  
Malcolm Nicol
Keyword(s):  
High Pressure ◽  
Raman Scattering ◽  
Pentaerythritol Tetranitrate ◽  
Pressure Stability

In situ Raman scattering studies of high-pressure stability and transformations in the matrix of a nanostructured glass-ceramic composite

2005 ◽  
Vol 36 (10) ◽  
pp. 938-945 ◽  
Author(s):  
Kristina E. Lipinska-Kalita ◽  
Stephen A. Gramsch ◽  
Patricia E. Kalita ◽  
Russell J. Hemley
Keyword(s):  
High Pressure ◽  
Raman Scattering ◽  
Glass Ceramic ◽  
Ceramic Composite ◽  
In Situ Raman ◽  
The Matrix ◽  
Pressure Stability ◽  
Glass Ceramic Composite

Spectroscopy of Semiconductor Nano-Crystals at High Pressure

1992 ◽  
Vol 272 ◽  
Author(s):  
John Schroeder ◽  
Markus R. Silvestri ◽  
Xue-Shu Zhao ◽  
Peter D. Persans ◽  
Lih-Wen Hwang
Keyword(s):  
High Pressure ◽  
Raman Scattering ◽  
Bulk Material ◽  
Semiconductor Nanocrystals ◽  
Electronic States ◽  
Wurtzite Phase ◽  
Glass Composites ◽  
Rocksalt Phase ◽  
Electron Phonon Coupling ◽  
Pressure Stability

ABSTRACTThe optical and vibrational properties of small CdSe and CdS particles embedded in a glass matrix and as a colloid have been studied as a function of pressure up to 90 kbar using Raman scattering and photoluminescence techniques. We will discuss the use of high pressure optical spectroscopy techniques, where the sample is contained in a diamond anvil.cell with optical access, to study the nature of the electronic states in semiconductor nanocrystals. Raman scattering is employed to establish the enhanced pressure stability of the wurtzite phase in the II-VI nanocrystalline composites. Photolurninescence is used to study the energies of electronic states. The wurtzite to rocksalt phase transition behavior in the nanocrystallite systems is quite different from that in the bulk material. This different behavior is attributed to a large number of defects (vacancies) in the nanocrystallite system. This work demonstrates that the main defects in the CdS glass composites are cadmium vacancies; while in CdSe Selenium vacancies exist in the conduction band. The pressure dependence of the Huang-Rhys parameter, characteristic for the strength of the electron-phonon coupling, will also be discussed for the nanocrystalline samples versus the bulk material.

Thermal and high-pressure stability of purified polygalacturonase and pectinmethylesterase from four different tomato processing varieties

2006 ◽  
Vol 39 (4) ◽  
pp. 440-448 ◽  
Author(s):  
Dolores Rodrigo ◽  
Clara Cortés ◽  
Elke Clynen ◽  
Liliane Schoofs ◽  
Ann Van Loey ◽  
...  
Keyword(s):  
High Pressure ◽  
Tomato Processing ◽  
Pressure Stability

Superconducting La2CuO4+x prepared by oxygenation at high pressure: a Raman-scattering study

1990 ◽  
Author(s):  
Kevin F. McCarty ◽  
J. E. Schirber ◽  
S.-W. Cheong ◽  
Z. Fisk
Keyword(s):  
High Pressure ◽  
Raman Scattering ◽  
Scattering Study

High-pressure effect on inverse spinel LiCuVO4: X-ray diffraction and Raman scattering

2013 ◽  
Vol 22 (1) ◽  
pp. 016103 ◽  
Author(s):  
Heng-Nan Liang ◽  
Chun-Li Ma ◽  
Fei Du ◽  
Qi-Liang Cui ◽  
Guang-Tian Zou
Keyword(s):  
High Pressure ◽  
Raman Scattering ◽  
Pressure Effect ◽  
X Ray Diffraction ◽  
Inverse Spinel ◽  
X Ray ◽  
High Pressure Effect

High-pressure stability of bcc-vanadium and phase transition to a rhombohedral structure at 200 GPa

2021 ◽  
Vol 129 (13) ◽  
pp. 135902
Author(s):  
Yuichi Akahama ◽  
Saori Kawaguchi ◽  
Naohisa Hirao ◽  
Yasuo Ohishi
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Rhombohedral Structure ◽  
Pressure Stability
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