Raman Scattering Study of H2O2-Etched Zn0.1Cd0.9Te Surfaces

1996 ◽  
Vol 450 ◽  
Author(s):  
Brajesh K. Rai ◽  
R. S. Katiyar ◽  
K. -T. Chen ◽  
H. Chen ◽  
A. Burger
Keyword(s):  
Raman Scattering ◽  
Quantum Confinement ◽  
Laser Power ◽  
Peak Position ◽  
Downward Shift ◽  
Te Precipitates ◽  
Raman Modes ◽  
Raman Study ◽  
Scattering Study ◽  
High Irradiation

ABSTRACTRaman study of as-grown and H2O2-etched surfaces of Zn0.1Cd0.9 Te single crystal has been performed. A distribution of Te precipitates on the surface of as-grown ZCT, which increases after etching, has been encountered. With high irradiation powers, due to the oxidation of the surfaces, new bands of TeO32− are evolved. A downward shift in the peak position, as well as a halfwidth broadening, of all Raman modes has been observed with increasing laser power. The phenomenon, due to the formation of insulating oxide of tellurium in a dispersion of Te precipitates and vice-versa, has been attributed to the quantum confinement of phonons.

Investigation of Raman Modes and Born-Effective Charges in AgNb1/2 Ta1/2 O3 : A Density-Functional and Raman Scattering Study

2015 ◽  
Vol 99 (1) ◽  
pp. 332-339 ◽  
Author(s):  
Kotagiri Ganga Prasad ◽  
Manish K. Niranjan ◽  
Saket Asthana ◽  
R. Karthikeyan
Keyword(s):  
Raman Scattering ◽  
Density Functional ◽  
Raman Modes ◽  
Scattering Study ◽  
Effective Charges

A Raman Scattering Study of the Temperature Dependence of Boroxol Ring Clusters in B2 O3-GeO2 and B2 O3-GeO2-SiO2 Glasses.

1984 ◽  
Vol 41 ◽  
Author(s):  
I. N. Chakraborty ◽  
R. A. Condrate
Keyword(s):  
Raman Scattering ◽  
Temperature Dependence ◽  
Room Temperature ◽  
Arrhenius Plot ◽  
Scattering Data ◽  
Intensity Data ◽  
Kcal Mole ◽  
Raman Study ◽  
Scattering Study ◽  
Composition Ring

AbstractThis Raman study indicates that the boroxol ring concentrations for glasses in the B2 O3-GeO2 and B2 O3-GeO2-SiO2 systems are dependent upon temperature and composition. Ring breakage and formation occur well below Tg. An Arrhenius plot of intensity data for borogermanate g glass indicates that the heat of ring rupture is ca. 7.7 Kcal/mole. The boroxol ring concentrations in various glasses were also investigated at room temperature after various heat treatments. The structural interpretation from Raman scattering data was compared with that from IR data.

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
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