Polarized Raman scattering studies of nonpolara-plane GaN films grown onr-plane sapphire substrates by MOCVD

2006 ◽  
Vol 203 (15) ◽  
pp. 3788-3792 ◽  
Author(s):  
Haiyong Gao ◽  
Fawang Yan ◽  
Jinmin Li ◽  
Junxi Wang ◽  
Jianchang Yan
Keyword(s):  
Raman Scattering ◽  
Sapphire Substrates ◽  
Polarized Raman

Optical Anisotropy Studies of Sapphire by Raman Scattering and Spectroscopic Transmission Ellipsometry

1998 ◽  
Vol 512 ◽  
Author(s):  
H. Yao ◽  
C. H. Yan ◽  
S. P. Denbaars ◽  
J. M. Zavada
Keyword(s):  
Raman Scattering ◽  
Optical Anisotropy ◽  
Optical Axis ◽  
High Sensitivity ◽  
Incident Laser ◽  
Axis Orientation ◽  
Raman Analysis ◽  
Sapphire Substrates ◽  
Peak Intensity ◽  
Polarized Raman

ABSTRACTOptical anisotropy of sapphire have been studied by both polarized Raman scattering and transmission variable angle spectroscopic ellipsometry (TVASE). The polarized Raman effect was measured on both c-plane (0001) and a-plane (2110) sapphire substrates. Two TO phonons (379 and 431 cm−l) and four LO phonons (418, 450, 577, and 750 cm−1) were observed when the optical axis <c> is perpendicular to the polarization of the incident laser beam (for both c-plane and a-plane). While only two TO phonons (379 and 431cm−1) and two LO phonons (418 and 645 cm−1) can be seen when the optical axis is parallel to the polarization for an a-plane sapphire. The optical axis of the a-plane sapphire can then be quickly determined by either maximizing or minimizing the 645 LO peak intensity with about ±10° error. TVASE measurements were carried out in the energy range of 0.75eV to 5.8eV at room temperature. Sizable off-diagonal Jones matrix elements Apst, and Aspt can be detected even with the optical axis 1° off the X-axis. This indicates that TVASE has a high sensitivity to optical anisotropy. By minimizing these off-diagonal elements and combining the Raman analysis, the optical axis orientation of an a-plane or m-plane (0110) sapphire can therefore be fully determined with an error of less than 1°.

scholarly journals Probing IrTe2 crystal symmetry by polarized Raman scattering

2014 ◽  
Vol 89 (22) ◽  
Author(s):  
N. Lazarević ◽  
E. S. Bozin ◽  
M. Šćepanović ◽  
M. Opačić ◽  
Hechang Lei ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Crystal Symmetry ◽  
Polarized Raman

On the mixed nature of the 740cm−1 band in wurtzite GaN films: A polarized Raman scattering investigation

2006 ◽  
Vol 253 (1) ◽  
pp. 249-253
Author(s):  
P.C. Ricci ◽  
C.M. Carbonaro ◽  
R. Corpino ◽  
A. Anedda
Keyword(s):  
Raman Scattering ◽  
Polarized Raman ◽  
Mixed Nature

Raman scattering characterization of well-aligned IrO2 nanocrystals grown on sapphire substrates via reactive sputtering

2006 ◽  
Vol 37 (12) ◽  
pp. 1411-1415 ◽  
Author(s):  
Alexandru Korotcov ◽  
Hung-Pin Hsu ◽  
Ying-Sheng Huang ◽  
Dah-Shyang Tsai
Keyword(s):  
Raman Scattering ◽  
Reactive Sputtering ◽  
Sapphire Substrates

A Polarized raman scattering study on deuterated tetramethylammonium chlorozincate

1996 ◽  
Vol 185 (1) ◽  
pp. 245-248
Author(s):  
J. Henocque ◽  
Y. Guinet ◽  
A. Hedoux
Keyword(s):  
Raman Scattering ◽  
Scattering Study ◽  
Polarized Raman

Polarized Raman Scattering from a Single, Segmented SnO2 Wire

2011 ◽  
Vol 115 (35) ◽  
pp. 17270-17277 ◽  
Author(s):  
Tsachi Livneh ◽  
Yigal Lilach ◽  
Inna Popov ◽  
Andrei Kolmakov ◽  
Martin Moskovits
Keyword(s):  
Raman Scattering ◽  
Polarized Raman

CdZnSe/Zn(Be)Se Quantum Dot Structures: Size, Chemical Composition and Phonons

2003 ◽  
Vol 799 ◽  
Author(s):  
Y. Gu ◽  
Igor L. Kuskovsky ◽  
J. Fung ◽  
R. Robinson ◽  
I. P. Herman ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Chemical Composition ◽  
Quantum Dot ◽  
Raman Scattering ◽  
Size Effect ◽  
Quantum Size Effect ◽  
Optically Active ◽  
Photoluminescence Excitation ◽  
Quantum Size ◽  
Polarized Raman

ABSTRACTThe size and chemical composition of optically active CdZnSe/ZnSe and CdZnSe/Zn0.97Be0.03Se quantum dots (QDs) are determined using photoluminescence, photoluminescence excitation and polarized Raman scattering spectroscopies. We show that the addition of Be into the barrier enhances the Cd composition and the quantum size effect of optically active QDs. Additionally, surface phonons from QDs are observed in CdZnSe/ZnBeSe nanostructures.

scholarly journals Spin crossover complexes [Fe(NH2trz)3](X)2·nH2O investigated by means of polarized Raman scattering and DFT calculations

2013 ◽  
Vol 15 (41) ◽  
pp. 18128 ◽  
Author(s):  
Yeny A. Tobon ◽  
Lara Kabalan ◽  
Sébastien Bonhommeau ◽  
Nathalie Daro ◽  
Arnaud Grosjean ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Dft Calculations ◽  
Spin Crossover ◽  
Spin Crossover Complexes ◽  
Polarized Raman

scholarly journals Raman scattering characterization of well-aligned RuO2nanocrystals grown on sapphire substrates

2007 ◽  
Vol 9 (5) ◽  
pp. 130-130 ◽  
Author(s):  
Y M Chen ◽  
A Korotcov ◽  
H P Hsu ◽  
Y S Huang ◽  
D S Tsai
Keyword(s):  
Raman Scattering ◽  
Sapphire Substrates
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