Raman study of α-quartz-type Ge1−xSixO2 (0 < x ≤ 0.067) single crystals for piezoelectric applications

RSC Advances ◽  
2015 ◽  
Vol 5 (69) ◽  
pp. 55795-55800 ◽  
Author(s):  
Adrien Lignie ◽  
Patrick Hermet ◽  
Guillaume Fraysse ◽  
Pascale Armand
Keyword(s):  
Single Crystals ◽  
Raman Study ◽  
Polarized Raman

Raman lines due to Ge–O–Si bridges in α-Ge1−xSixO2 single crystals are identified with the help of polarized Raman and calculations.

Dynamics of the commensurate-incommensurate phase transition in C2O4D ND4, 1/2 D2O: a polarized Raman study under pressure

1993 ◽  
Vol 3 (4) ◽  
pp. 1007-1029 ◽  
Author(s):  
M. Krauzman ◽  
A. Colline ◽  
D. Kirin ◽  
R. M. Pick ◽  
N. Toupry
Keyword(s):  
Phase Transition ◽  
Incommensurate Phase ◽  
Raman 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.

Raman study of Ca3Co2O6 single crystals

2010 ◽  
Vol 108 (10) ◽  
pp. 103517 ◽  
Author(s):  
Smita Gohil ◽  
Kartik K. Iyer ◽  
P. Aswathi ◽  
Shankar Ghosh ◽  
E. V. Sampathkumaran
Keyword(s):  
Single Crystals ◽  
Raman Study

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.

Raman study of the structural properties of KNO3(II)

1977 ◽  
Vol 55 (7) ◽  
pp. 1242-1250 ◽  
Author(s):  
M. H. Brooker
Keyword(s):  
Single Crystals ◽  
Structural Properties ◽  
Raman Spectra ◽  
Excellent Agreement ◽  
Room Temperature ◽  
Group Analysis ◽  
Factor Group ◽  
Spectral Features ◽  
Space Group ◽  
Raman Study

Raman spectra of oriented single crystals of KNO3(II) have been recorded at 298 and 77 K. At both temperatures the data are in excellent agreement with the factor group analysis based on the generally accepted Pmcn space group. Additional spectral features observed near room temperature suggest the presence of a significant number of disordered nitrate groups on alternate lattice sites, although the majority of nitrate groups occupy the ordered sites. As the temperature is lowered, the disordered groups freeze out until near the temperature of reported electrical anomalies (213 K) only the ordered sites are occupied. Improved resolution has resulted in detection of a number of new spectral features while improved depolarization data have resulted in reassignment of several peaks.

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

Micro-Raman Study of Self-Assembled Nanostructures: (1−x)PZN:xPT Solid Solution

1999 ◽  
Vol 581 ◽  
Author(s):  
S. Gupta ◽  
R. S. Katiyar ◽  
R. Guo ◽  
A. S. Bhalla
Keyword(s):  
Lead Titanate ◽  
Relaxor Ferroelectrics ◽  
Structure Property ◽  
Temperature Dependent ◽  
Property Relations ◽  
Polarization Mechanism ◽  
Raman Study ◽  
Self Assembled ◽  
Polarized Raman ◽  
Temperature Dependent Study

ABSTRACTRelaxor ferroelectrics are one of the important classes of self-assembled nanostructure composite materials. Interesting features associated with the nanoregions give rise to the most interesting device related characteristics and unusual properties in these materials. Besides, they possess the largest property coefficients by themselves or when modified with lead titanate (PT). In this report, a detailed temperature dependent study has been carried out on (1-x)PZN-xPT relaxors with compositions x = 0.05 and 0.085 using polarized Raman scattering under optical and E-field variables and inferred the structure-property relations in order to obtain information to characterize the material for matching the application criteria. In addition, phase transitions associated with the relaxors have also been investigated to understand the polarization mechanism(s) for the unpoled and poled specimens.

scholarly journals Bulk crystal growth and characterization of the bismuth ferrite-based material Bi3FeO4(MoO4)2

CrystEngComm ◽  
2019 ◽  
Vol 21 (15) ◽  
pp. 2508-2516 ◽  
Author(s):  
Conggang Li ◽  
Zeliang Gao ◽  
Xiangxin Tian ◽  
Junjie Zhang ◽  
Dianxing Ju ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Single Crystals ◽  
Bismuth Ferrite ◽  
Bulk Crystal ◽  
High Quality ◽  
Bulk Crystal Growth ◽  
Polarized Raman

The large, high-quality Bi3FeO4(MoO4)2 single crystals of size up to 28 × 20 × 12 mm3 were grown successfully by the TSSG method. The thermal, optical, magnetization, and polarized Raman properties are investigated in detail.

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