Low-temperature Raman spectra of racemate DL -Alanine crystals

2009 ◽  
Vol 41 (7) ◽  
pp. 808-813 ◽  
Author(s):  
J. A. Lima ◽  
P. T. C. Freire ◽  
F. E. A. Melo ◽  
J. Mendes Filho ◽  
G. P. De Sousa ◽  
...  
Keyword(s):  
Low Temperature ◽  
Raman Spectra

Low Temperature Cell for Measurement of Raman Spectra

1974 ◽  
pp. 239-242
Author(s):  
Jan Štokr ◽  
Bohdan Schneider
Keyword(s):  
Low Temperature ◽  
Raman Spectra

scholarly journals Synthesis of new Ln4(Al2O6F2)O2 (Ln = Sm, Eu, Gd) phases with a cuspidine-related structure

IUCrJ ◽  
2019 ◽  
Vol 6 (1) ◽  
pp. 128-135 ◽  
Author(s):  
Aroa Morán-Ruiz ◽  
Aritza Wain-Martin ◽  
Alodia Orera ◽  
María Luisa Sanjuán ◽  
Aitor Larrañaga ◽  
...  
Keyword(s):  
Rare Earth ◽  
Low Temperature ◽  
Raman Spectra ◽  
Photoelectron Spectroscopy ◽  
Binding Energies ◽  
Temperature Reaction ◽  
Rietveld Refinements ◽  
X Ray ◽  
Vinylidene Difluoride ◽  
Vacant Position

The first fluorination of the cuspidine-related phases of Ln4(Al2O7□)O2 (where Ln = Sm, Eu, Gd) is reported. A low-temperature reaction with poly(vinylidene difluoride) lead to the fluorine being substituted in place of oxygen and inserted into the vacant position between the dialuminate groups. X-ray photoelectron spectroscopy shows the presence of the F 1s photoelectron together with an increase in Al 2p and rare-earth 4d binding energies supporting F incorporation. Energy-dispersive X-ray spectroscopy analyses are consistent with the formula Ln4(Al2O6F2)O2, confirming that substitution of one oxygen by two fluoride atoms has been achieved. Rietveld refinements show an expansion in the cell upon fluorination and confirm that the incorporation of fluoride in the Ln4(Al2O7□)O2 structure results in changes in Al coordination from four to five. Thus, the isolated tetrahedral dialuminate Al2O7 groups are converted to chains of distorted square-based pyramids. These structural results are also discussed based on Raman spectra.

Heat capacity and Raman spectra of Cr(C5H7O2)3 at low temperature

2006 ◽  
Vol 443 (2) ◽  
pp. 137-140 ◽  
Author(s):  
V.N. Naumov ◽  
M.A. Bespyatov ◽  
T.V. Basova ◽  
P.A. Stabnikov ◽  
I.K. Igumenov
Keyword(s):  
Heat Capacity ◽  
Low Temperature ◽  
Raman Spectra

Low Temperature Raman Spectra of TTF-TCNQ and other Organic Conductors

1985 ◽  
Vol 120 (1) ◽  
pp. 93-96 ◽  
Author(s):  
Susumu Matsuzaki ◽  
Mitsukazu Onomichi ◽  
Hideaki Tomura ◽  
Sadanori Yoshida ◽  
Koichi Toyoda
Keyword(s):  
Low Temperature ◽  
Raman Spectra ◽  
Organic Conductors

Infrared and Raman Spectra of Spiropentane-H8

1972 ◽  
Vol 26 (5) ◽  
pp. 540-542 ◽  
Author(s):  
G. R. Burns ◽  
D. G. McGavin
Keyword(s):  
Low Temperature ◽  
Infrared Spectrum ◽  
Gas Phase ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Sufficient Information ◽  
Infrared And Raman Spectra ◽  
Calorimetric Data ◽  
Crystalline Films ◽  
Twist Mode

Infrared and Raman spectra have been measured for spiropentane-H8. Raman spectra for the liquid have enabled the b1 species ring twist to be assigned. Previous assignments of this mode were based on calorimetric data and on the assignment of a band in the infrared spectrum to a combination band involving the ring twist mode. Infrared spectra of low temperature crystalline films have provided sufficient information that, when taken with the Raman data and gas phase infrared spectra, we have assignments for all of the fundamental modes.

Low-temperature features of Raman spectra below magnetic transitions in multiferroic Ho1–xNdxFe3(BO3)4 and Sm1–yLayFe3(BO3)4 single crystals

2017 ◽  
Vol 509 (1) ◽  
pp. 92-96 ◽  
Author(s):  
A. Krylov ◽  
E. Moshkina ◽  
S. Sofronova ◽  
I. Gudim ◽  
V. Temerov ◽  
...  
Keyword(s):  
Low Temperature ◽  
Single Crystals ◽  
Raman Spectra ◽  
Magnetic Transitions
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