Polarized Raman Scattering Study of ZnGeP2 Single Crystals

1997 ◽  
Vol 484 ◽  
Author(s):  
Spirit Tlali ◽  
Howard E. Jackson ◽  
M. C. Ohmer ◽  
P. G. Schunemann ◽  
T. M. Pollak
Keyword(s):  
Raman Scattering ◽  
Single Crystals ◽  
Raman Spectra ◽  
Low Temperatures ◽  
High Quality ◽  
Crystal Orientations ◽  
Gradient Technique ◽  
Theoretical Predictions ◽  
Scattering Study ◽  
Polarized Raman

AbstractRaman scattering experiments on high quality ZnGeP2 single crystals grown by the seeded horizontal dynamic gradient technique have been carried out. Polarized Raman spectra were obtained in the backscattering geometry at both room and low temperatures for several crystal orientations and compared with group theoretical predictions. Raman spectra from as-grown and annealed samples display distinctive differences which were explored by utilizing two different excitation wavelengths: 514.3 nm and 632.8 nm; the observed differences are attributed to a surface interdiffuasion effect.

scholarly journals Polarized Raman scattering study of PSN single crystals and epitaxial thin films

2015 ◽  
Vol 05 (02) ◽  
pp. 1550013 ◽  
Author(s):  
J. Pokorný ◽  
I. Rafalovskyi ◽  
I. Gregora ◽  
F. Borodavka ◽  
M. Savinov ◽  
...  
Keyword(s):  
Thin Films ◽  
Raman Scattering ◽  
Single Crystals ◽  
Scattered Light ◽  
Epitaxial Thin Films ◽  
Ferroelectric State ◽  
Relaxor State ◽  
Structural Differences ◽  
Scattering Study ◽  
Polarized Raman

This paper describes a detailed analysis of the dependence of Raman scattering intensity on the polarization of the incident and inelastically scattered light in PbSc 0.5 Nb 0.5 O 3 (PSN) single crystals and epitaxially compressed thin films grown on (100)-oriented MgO substrates. It is found that there are significant differences between the properties of the crystals and films, and that these differences can be attributed to the anticipated structural differences between these two forms of the same material. In particular, the scattering characteristics of the oxygen octahedra breathing mode near 810 cm-1 indicate a ferroelectric state for the crystals and a relaxor state for the films, which is consistent with the dielectric behaviors of these materials.

Vibrational Raman Scattering from high TC single Crystals

1987 ◽  
Vol 99 ◽  
Author(s):  
D. M. Krol ◽  
M. Stavola ◽  
L. F. Schneemeyer ◽  
J. V. Waszczak ◽  
W. Weber
Keyword(s):  
Chemical Composition ◽  
Raman Scattering ◽  
Single Crystals ◽  
Raman Spectra ◽  
Peak Position ◽  
High Tc ◽  
Stretching Vibration ◽  
Polarized Raman ◽  
Axial Stretching

ABSTRACTPolarized Raman spectra have been measured on single crystals of the high Tc materials A2BCu3Ox with A=Ba and Sr, B=Y and La and 6<x<7. The dependence of the 500 cm-i peak position (αzz)on chemical composition is in agreement with its assignment to the O(1) axial stretching vibration. The intensity of the 600 cm1 band, which has been ascribed to a defect induced Cu-O mode, strongly depends on the crystal preparation and resulting purity.

scholarly journals Polarized Raman scattering study of kesterite type Cu2ZnSnS4 single crystals

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Maxim Guc ◽  
Sergiu Levcenko ◽  
Ivan V. Bodnar ◽  
Victor Izquierdo-Roca ◽  
Xavier Fontane ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Single Crystals ◽  
Scattering Study ◽  
Polarized Raman

scholarly journals Flux Method Growth of Large Size Group IV–V 2D GeP Single Crystals and Photoresponse Application

Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 235
Author(s):  
Shuqi Zhao ◽  
Tongtong Yu ◽  
Ziming Wang ◽  
Shilei Wang ◽  
Limei Wei ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Single Crystals ◽  
High Performance ◽  
Group Iv ◽  
X Ray Diffraction ◽  
High Quality ◽  
Practical Applications ◽  
Large Size ◽  
Growth Method ◽  
Polarized Raman

Two-dimensional (2D) materials driven by their unique electronic and optoelectronic properties have opened up possibilities for their various applications. The large and high-quality single crystals are essential to fabricate high-performance 2D devices for practical applications. Herein, IV-V 2D GeP single crystals with high-quality and large size of 20 × 15 × 5 mm3 were successfully grown by the Bi flux growth method. The crystalline quality of GeP was confirmed by high-resolution X-ray diffraction (HRXRD), Laue diffraction, electron probe microanalysis (EPMA) and Raman spectroscopy. Additionally, intrinsic anisotropic optical properties were investigated by angle-resolved polarized Raman spectroscopy (ARPRS) and transmission spectra in detail. Furthermore, we fabricated high-performance photodetectors based on GeP, presenting a relatively large photocurrent over 3 mA. More generally, our results will significantly contribute the GeP crystal to the wide optoelectronic applications.

Temperature-dependent Raman scattering study of tin modified PbZrO3 and PbHfO3 single crystals

2015 ◽  
Vol 644 ◽  
pp. 854-861 ◽  
Author(s):  
I. Jankowska-Sumara ◽  
M. Ptak ◽  
M. Mączka ◽  
A. Majchrowski ◽  
T.H. Kim ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Single Crystals ◽  
Temperature Dependent ◽  
Scattering Study

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

Some New 1-D Compounds with Metal-Halide Chain

1981 ◽  
Vol 36 (1) ◽  
pp. 83-86 ◽  
Author(s):  
D. Layek ◽  
G. C. Papavassiliou
Keyword(s):  
Single Crystals ◽  
Raman Spectra ◽  
Mixed Valence ◽  
Metal Halide ◽  
Anisotropic Character ◽  
Chemical Behaviour ◽  
Polarized Raman ◽  
Mixed Valence Compounds

Abstract Some new mixed valence compounds of the type [M(L-L)2M(L-L)2X2]Y4 (where M = Pt or Pd, L-L = 2NH3 or ethylenediamine, X = Cl, Br or I and Y = HSO4, 1/2 SO4, ClO4 or 1/2 PtCl4) have been synthesized. The polarized Raman spectra of single crystals show the anisotropic character and the presence of ---M(II)---X-M(IV)-X chains. The method of preparation and the chemical behaviour correspond to the mechanism of the formation of Magnus green salt oxidized product.

Identification of hydrogen bond modes in polarized Raman spectra of single crystals of α-oxalic acid dihydrate

2009 ◽  
Vol 40 (11) ◽  
pp. 1605-1614 ◽  
Author(s):  
Vlasta Mohaček-Grošev ◽  
Jože Grdadolnik ◽  
Jernej Stare ◽  
Dušan Hadži
Keyword(s):  
Hydrogen Bond ◽  
Oxalic Acid ◽  
Single Crystals ◽  
Raman Spectra ◽  
Oxalic Acid Dihydrate ◽  
Polarized Raman

Raman scattering study of theFe1−xCoxSb2andFe1−xCrxSb2(0≤x≤1)single crystals

2009 ◽  
Vol 80 (1) ◽  
Author(s):  
N. Lazarević ◽  
Z. V. Popović ◽  
Rongwei Hu ◽  
C. Petrovic
Keyword(s):  
Raman Scattering ◽  
Single Crystals ◽  
Scattering Study
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