Site-Selective Solvation in Supercritical CO2Observed by Raman Spectroscopy: Phenyl Group Leads to Greater Attractive Energy than Chloro Group

2010 ◽  
Vol 114 (50) ◽  
pp. 16832-16837 ◽  
Author(s):  
Daisuke Kajiya ◽  
Ken-ichi Saitow
Keyword(s):  
Raman Spectroscopy ◽  
Phenyl Group ◽  
Selective Solvation ◽  
Chloro Group ◽  
Site Selective

Towards atomic site-selective sensitivity in tip-enhanced Raman spectroscopy

2006 ◽  
Vol 125 (24) ◽  
pp. 244706 ◽  
Author(s):  
Norihiko Hayazawa ◽  
Hiroyuki Watanabe ◽  
Yuika Saito ◽  
Satoshi Kawata
Keyword(s):  
Raman Spectroscopy ◽  
Atomic Site ◽  
Tip Enhanced Raman Spectroscopy ◽  
Selective Sensitivity ◽  
Site Selective

Partial substitution of 18O in YBa2Cu3O7: Investigations of inhomogeneities and their effect on Tc

1989 ◽  
Vol 4 (3) ◽  
pp. 504-514 ◽  
Author(s):  
William K. Ham ◽  
Steven W. Keller ◽  
James N. Michaels ◽  
Angelica M. Stacy ◽  
Dimitry Krillov ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Isotope Shift ◽  
Temperature Programmed Desorption ◽  
Partial Substitution ◽  
Linear Extrapolation ◽  
Selective Substitution ◽  
Temperature Programmed ◽  
Oxygen Substitution ◽  
Site Selective ◽  
Secondary Ion

The possibility of site-selective substitution of 18O into YBa2Cu3O7 was explored. Samples containing various quantities of 18O were prepared by processing in 18O2 both at 950 °C and at 400 °C. The samples were characterized by secondary ion mass spectroscopy (SIMS), temperature programmed desorption (TPD) and reduction (TPR), Raman spectroscopy, and magnetization measurements. Measurements of the shifts in the Raman active modes with 18O substitution and of the ratios of 18O to 16O by TPD, TPR, and SIMS show that even for temperatures as low as 400 °C and times as short as 2 h. 18O is not substituted exclusively into the chain site (O1) in YBa2Cu3O7. In addition, there is no consistent variation in the shifts in Tc with the degree of substitution; therefore, the isotope effect for a sample with 100% 18O cannot be predicted by a linear extrapolation of data obtained for samples with partial 18O substitution. The mechanism of oxygen substitution, the difficulties of measuring the true magnitude of the oxygen isotope shift, and the meaning of the small isotope shift are discussed.

Raman spectroscopy and X-ray diffraction of lithium niobate at temperatures up to 1300○-4.80pt○C

2005 ◽  
Vol 126 ◽  
pp. 101-105 ◽  
Author(s):  
B. Moulin ◽  
L. Hennet ◽  
D. Thiaudière ◽  
P. Melin ◽  
P. Simon
Keyword(s):  
Raman Spectroscopy ◽  
Lithium Niobate ◽  
X Ray Diffraction ◽  
X Ray

Raman spectroscopy using a gas laser

1965 ◽  
Vol 26 (11) ◽  
pp. 620-626 ◽  
Author(s):  
J.P. Russell
Keyword(s):  
Raman Spectroscopy ◽  
Gas Laser

OBSERVATION OF PRETRANSITIONAL EFFECTS ON THE SHAPE OF THE E2 (17 cm-1 ) OPTICAL MODE IN β-Ag1 BY RAMAN SPECTROSCOPY

1981 ◽  
Vol 42 (C6) ◽  
pp. C6-776-C6-778
Author(s):  
E. Cazzanelli ◽  
A. Fontana ◽  
G. Mariotto ◽  
F. Rocca ◽  
M. P. Fontana
Keyword(s):  
Raman Spectroscopy ◽  
Optical Mode

RAMAN SPECTROSCOPY IN GUIDED OPTICAL WAVES

1983 ◽  
Vol 44 (C10) ◽  
pp. C10-501-C10-503 ◽  
Author(s):  
J. D. Swalen ◽  
J. F. Rabolt
Keyword(s):  
Raman Spectroscopy ◽  
Optical Waves
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