Raman scattering probe of anharmonic effects due to temperature and compositional disorder in GaNxAs1−x

2006 ◽  
Vol 99 (10) ◽  
pp. 103503 ◽  
Author(s):  
H. F. Liu ◽  
N. Xiang ◽  
S. Tripathy ◽  
S. J. Chua
Keyword(s):  
Raman Scattering ◽  
Anharmonic Effects ◽  
Compositional Disorder

Raman-scattering probe of anharmonic effects due to temperature and composition in InGaN

2012 ◽  
Vol 250 (2) ◽  
pp. 329-333 ◽  
Author(s):  
J. F. Kong ◽  
W. Z. Shen ◽  
Q. X. Guo
Keyword(s):  
Raman Scattering ◽  
Anharmonic Effects

Raman-scattering probe of anharmonic effects in GaAs

1995 ◽  
Vol 51 (23) ◽  
pp. 16660-16667 ◽  
Author(s):  
Prabhat Verma ◽  
S. C. Abbi ◽  
K. P. Jain
Keyword(s):  
Raman Scattering ◽  
Anharmonic Effects

Raman scattering study of the anharmonic effects in CeO2−ynanocrystals

2007 ◽  
Vol 19 (49) ◽  
pp. 496209 ◽  
Author(s):  
Z V Popović ◽  
Z Dohčević-Mitrović ◽  
A Cros ◽  
A Cantarero
Keyword(s):  
Raman Scattering ◽  
Anharmonic Effects ◽  
Scattering Study

A Raman scattering study of the solid phases of HCl, DCl, HBr, and DBr

1977 ◽  
Vol 55 (6) ◽  
pp. 592-603 ◽  
Author(s):  
J. E. Vesel ◽  
B. H. Torrie
Keyword(s):  
Raman Scattering ◽  
Structural Transition ◽  
Thermal Hysteresis ◽  
Intermediate Phase ◽  
Cubic Phase ◽  
Internal Mode ◽  
Anharmonic Effects ◽  
Scattering Study ◽  
Solid Phases ◽  
New Phase

Raman scattering studies were carried out on the ferroelectric and paraelectric phases of HCl, DCl, HBr, and DBr at temperatures from ~72 to ~160 K. Changes in the lattice region spectra at temperatures near Tc confirm the order–disorder nature of the ferroelectric transitions and the importance of anharmonic effects in these materials. The structural transition occurring in HCl near 120 K was observed by internal mode depolarization measurements which change irreversibly; these changes are attributed to macroscopic disorder in the sample below this temperature. Observations of the internal modes of HBr show a thermal hysteresis around an intermediate cubic phase and analogous results obtained for DBr imply the existence of a new phase which is similar to the intermediate phase in HBr.

Raman scattering from impurities in nonmetals. II. Anharmonic effects

1979 ◽  
Vol 57 (1) ◽  
pp. 11-22
Author(s):  
H. C. Chow
Keyword(s):  
Raman Spectrum ◽  
Raman Scattering ◽  
Raman Line ◽  
Life Time ◽  
Resonant Scattering ◽  
Time Effect ◽  
Dipole Radiation ◽  
Anharmonic Effects ◽  
Spectrum Function

Anharmonic effects on the impurity Raman spectrum are examined on the basis of an approximately derived, nonphenomenological Raman spectrum function. It is shown that owing to the phonon life-time effect, anharmonicity broadens the zero-phonon Raman line and the accompanied satellite phonon Raman lines. The case of resonant scattering is re-examined and the result suggests that the dipole radiation formulation of Raman scattering, which is the basis of the present and some other treatments, is unsuited for demonstrating hot luminescence.

Raman scattering probe of anharmonic effects in NiSi

2004 ◽  
Vol 35 (7) ◽  
pp. 536-540 ◽  
Author(s):  
S. K. Donthu ◽  
S. Tripathy ◽  
D. Z. Chi ◽  
S. J. Chua
Keyword(s):  
Raman Scattering ◽  
Anharmonic Effects
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