Effects of Er doping on Raman spectra and on the structural properties of YbMnO3

2015 ◽  
Author(s):  
Bhumireddi Sattibabu ◽  
Anil K. Bhatnagar
Keyword(s):  
Structural Properties ◽  
Raman Spectra ◽  
Er Doping

scholarly journals Synthesis and Structural Properties of Nanocomposites Based on Synthetic Opals and Active Dielectrics

2019 ◽  
Vol 12 (1) ◽  
pp. 19
Author(s):  
Bilal Abu Sal
Keyword(s):  
Raman Spectroscopy ◽  
Single Crystals ◽  
Structural Properties ◽  
Raman Spectra ◽  
Phase Structure ◽  
Opal Matrix ◽  
X Ray Diffraction ◽  
X Ray ◽  
Crystal State ◽  
Synthetic Opals

This work is devoted to generalize and analyze the previouse results of new photonic-crystalline nanomaterials based on synthetic opals and active dielectrics. Data were characterized by X-ray diffraction and Raman spectroscopy. Active dielectrics infiltrated into the pores of the opal from the melt. The phase structure composition of the infiltrated materials into the pores of the opal matrix were analyzed. The results of x-ray diffraction and Raman spectra allowed to establish the crystal state of active dielectrics in the pores of the opal. The Raman spectra of some opal-active dielectric nanocomposites revealed new bands and changes in band intensities compared to the spectra of single crystals of active dielectrics. Further more, differences in band intensities in the spectra were measured at different spots of the sample‘s surface were observed. The revealed changes were attributed to the formation of new crystalline phases due to the injected dielectrics in opal pores.

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.

First-principles simulation of Raman spectra and structural properties of quartz up to 5 GPa

2015 ◽  
Vol 24 (12) ◽  
pp. 127401 ◽  
Author(s):  
Lei Liu ◽  
Chao-Jia Lv ◽  
Chun-Qiang Zhuang ◽  
Li Yi ◽  
Hong Liu ◽  
...  
Keyword(s):  
Structural Properties ◽  
Raman Spectra ◽  
First Principles

Structure and Property of ZnO Content with Tb3+ Doped Zinc Aluminum Phosphate Glass

2011 ◽  
Vol 117-119 ◽  
pp. 315-318
Author(s):  
Chu Ni Fu ◽  
H.W. Yang ◽  
J.J. Wa ◽  
Chun Hung Lai ◽  
Yi Mu Lee ◽  
...  
Keyword(s):  
Refractive Index ◽  
Structural Properties ◽  
Raman Spectra ◽  
Phosphate Glass ◽  
Fluorescence Intensity ◽  
Fluorescence Spectra ◽  
Zinc Content ◽  
Aluminum Phosphate ◽  
Structure And Property ◽  
Glass Density

This study explores a series of optical, physical and structural properties based on P2O5-Al2O3-ZnO (ZAP) with glass doped 1 mol% Tb2O3, which changed the composition ratio between ZnO and P2O5. The structure and optical of glasses were studies by Raman spectra and fluorescence spectra. The Raman spectra with the zinc content increases, the 650-810 cm-1 at the P-­O­-P bond has no shift, but the intensity of the absorption peak decreased. The fluorescence intensity increases with the ZnO content increases. The glass density and refractive index also increases with the ZnO content increases.

New glasses within the Tl2O–Ag2O–TeO2 system: Thermal characteristics, Raman spectra and structural properties

2010 ◽  
Vol 45 (12) ◽  
pp. 1816-1824 ◽  
Author(s):  
D. Linda ◽  
M. Dutreilh-Colas ◽  
D. Hamani ◽  
P. Thomas ◽  
A. Mirgorodsky ◽  
...  
Keyword(s):  
Structural Properties ◽  
Raman Spectra ◽  
Thermal Characteristics

Study on the Structural Properties of Polycrystalline Er2O3 Films on SI(001) Substrates by Raman Spectra

2014 ◽  
Vol 953-954 ◽  
pp. 1091-1094
Author(s):  
Jun Chao Wang ◽  
Yan Yan Zhu
Keyword(s):  
Raman Spectroscopy ◽  
Structural Properties ◽  
Raman Spectra ◽  
Si Substrates ◽  
Different Temperatures ◽  
Sensitive Method

The Raman spectra of polystalline Er2O3 films on Si (001) substrates annealed at different temperatures in O2 atmosphere were investigated. Seven Raman lines are identified in annealed Er2O3 films on Si (001) substrates. Two broad peaks larger than 600 cm-1 are detected, and their origination is discussed. Raman spectroscopy is proved to be a simple and sensitive method to characterize the structures of Er2O3 films on Si substrates.

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