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Effects of pressure on the Raman spectra of a 4:1 methanolethanol
Effects of Pressure on the Raman Spectra of a 4 : 1. Methanol-Ethanol ... Raman spectrum of the 4 : 1 methanol-ethanol mixture, we compared ... 41 v(C0)b. 1052. 1 1. 35 d(CH,)sym" d ( C H 3) asym a( CH Jasyma a( CH 3)asyma a( CH ,)sym.
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High-pressure dependent Raman spectrocopic study of scintillating
High-pressure Raman spectroscopy and lattice-dynamics calculations on ... performed on magnesium tungstate under high pressure up to 41 GPa. .... 5mW, in order to avoid laser-heating effects on the probed material and the concomitant ... up to 21 GPa in a membrane-type DAC using a 4:1 mixture of methanol- ethanol as.
[ 1107.0160 - Read/Download File

Effect of hydrostatic pressure on the Raman spectrum of anatase
Raman spectra of anatase have been investigated under pressures up to 60 kbar ... Anatase belongs to the space group D~(I41 /amd) and the primitive unit cell ... A 4: 1 mixture (by volume) of methanol: ethanol was used as pressure medium.
[ 1-s2.0-0038109879906483-main.pdf?_tid=0ae501aa-4ab0-11e5-86d6-00000aacb35d&acdnat=1440455746_adc5ceb7139d8e6f05bf24b0b1b07bc0 - Read/Download File

High-pressure Raman and Optical Absorption Studies on Lead
Results. Raman spectra taken at three different pressures are presented in Figure 1. ... spectra were recorded with a 4:l methanol-ethanol mixture as pressure medium. .... Nauk SSSR 1977, 41, 588: 1977, 41(3), 105 (English translation).
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CaCrO4 high pressure Raman - arXiv.org
the Raman peaks suggested there existed four pressure regions related to different ... from a zircon-type (I41/amd) ambient phase to a scheelite-type high pressure ... structural characters of materials through the solid-state effects on the dynamical ... gasket. 4:1 methanol-ethanol mixture was used as pressure medium. The.
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A high-pressure Raman spectroscopic study of hafnon, HfSiO4
May 2, 2006 ... scheelite structure with space group I41/a, a subgroup of the ... mixture of methanol, ethanol, and water as a pressure medium, which is frozen ... Keywords : Raman Spectroscopy, hafnon, phase transformation, scheelite-structured HfSiO4 ... meteorite impact debris and has been named reidite (Glass et al.
[ AM91_1888.pdf - Read/Download File

High pressure Raman scattering of silicon nanowires - University of
Mar 23, 2011 ... High pressure Raman scattering of silicon nanowires. This article has been .... diamond anvil cell [31] with a 4:1 methanol–ethanol mixture as pressure ... effect is negligible in bulk Si because of the better thermal conductivity of the bulk ... pressure dependence for bulk Si, taken from [41]. Quadratic terms in ...
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An Overview of the High-Pressure Vibrational Spectra of Clays and
Applied Spectroscopy Reviews 41(5):pp. ... An overview of the effect of high external pressures on clays and related minerals is .... Nujol or 1:4 methanol: ethanol mixture (9). ... The high-pressure Raman spectra of gibbsite were first studied.
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High-pressure Raman spectroscopy of phase change materials
Nov 8, 2013 ... We used high-pressure Raman spectroscopy to study the evolution of vibrational frequencies of the phase change .... compounds which allow us to study the effects of vacancies ... samples were compressed using methanol-ethanol mixture ... octahedral coordination with six neighboring Te atoms.41–43.
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Raman spectroscopy at high pressure and high temperature. Phase
Abstract. An outline of recent developments in Raman spectroscopy at high pressure, high temperature and combined high pressure and high temperature is presented. .... Washington D.C., pp 41–81. Hofmeister ... Lemos V, Camatgo F ( 1990) Effects of pressure on the Raman spectra of a 4∶1 methanol-ethanol mixture.
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Raman spectroscopy at high pressure and temperature for the study
pressure and temperature limits at which Raman spectra can be obtained reliably are dis- cussed. ... These elusive phase transitions often have important effects on thermodynamic properties of major .... 4:1 methanol:ethanol mixtures provide a hydrostatic medium to 11 GPa at ambient ...... JETP Letters, 41, 184–187.
[ 10-Reynard.pdf - Read/Download File

Pressure-induced structural phase transition in CaCrO4: Evidence
Oct 24, 2005 ... The Raman spectra showed that CaCrO4 underwent a continuous structural ... likely was from a zircon-type (I41/amd) ambient phase to a scheelite-type high- pressure structure. (I41/a). © 2005 ... als through the solid-state effects on the dynamical proper- ties. ... 4:1 methanol-ethanol mixture was used as.
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Effect of hydrostatic pressure on the crystal structure of - USPEX
nol mixture by high-resolution X-ray powder diffraction. (synchrotron radiation, l ¼ ... in the crystals of sodium oxalate with increasing pressure. .... Raman spectroscopy. ... (neon and methanol/ethanol/water) were used, in order to ... tential [41].
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Raman scattering study of bulk and nanocrystalline PbMoO4 at high
Nov 21, 2012 ... Chemical pressure effect on optical properties in multiferroic bulk BiFeO3 ... High- pressure Raman scattering measurements have been performed .... samples were loaded with a 4:1 methanol-ethanol mixture as ... I41/a (C6.
[ JAP112_103510.pdf - Read/Download File

Effect of pressure on La2(WO4)3 with a modulated scheelite-type
May 27, 2014 ... x-ray diffraction and Raman spectroscopy measurements, respectively. Furthermore ... within a 4 : 1 mixture of methanol/ethanol, which was used as pressure-transmitting ...... compounds, like for example CdGa2Se4 [39–41].
[ PRB89_174112.pdf - Read/Download File

Pressure-induced structural changes in metamict zircon
Apr 7, 2015 ... In-situ high pressure Raman spectroscopy and complementary X-ray diffraction and ... The radiation-induced knock-on effect of nuclei can lead to amorphous regions in ... Zircon is an orthosilicate with tetragonal space group I41/amd. ..... methanol-ethanol mixture or methanol-ethanol-eater mixture (liquid).
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A Cr3+ luminescence study of spodumene at high pressures: Effects
Keywords: Spodumene, pyroxene, high pressure, phase transition, Cr3+ luminescence ... Raman spectra at high pressure) at ~8.0 GPa is evidence of a. P21/c to ...
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Hydrogen bonding interactions in water-alcohol mixtures from X-ray
May 19, 2016 ... effect first experimentally characterized by Butler et al. in 1933 ... through partial vapor pressure measurements.1 Methanol-, ... entropy of mixing in these alcohol water mixtures remained ... reduced liquid mobility.36–41 Using Raman spectroscopy, ... Here, we present a study of methanol-, ethanol-,.
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Lattice compression and structural behavior of NaVSi2O6 - RRuff
Lattice-parameters, single-crystal intensity data, and Raman spectra were collected up to ... evolution of the lattice with increasing pressure. The fit of a third -order Birch-Murnaghan .... A 4:1 methanol:ethanol mixture was used as pressure -transmitting medium to ...... Temperature and High-Pressure Crystal Chemistry, 41, p.
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Anomalous High-Pressure Behavior of Amorphous Selenium - jstor
effects in amorphous materials because of the wide range of .... pressure media ( methanol/ethanol/water mixture and silicone .... stages of formation of crystal nuclei (41). ..... phous selenium by x-ray diffraction and Raman spectroscopy.
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