Vibronic spectra of Europium nitrate hexahydrate

1994 ◽  
Vol 60 (3-4) ◽  
pp. 185-192 ◽  
Author(s):  
V. I. Tsaryuk ◽  
V. D. Savchenko ◽  
N. L. Aryutkina ◽  
T. B. Chenskaya
Keyword(s):  
Nitrate Hexahydrate ◽  
Europium Nitrate ◽  
Vibronic Spectra ◽  
Europium Nitrate Hexahydrate

scholarly journals Spectroscopic Studies of the Behavior of Eu3+on the Luminescence of Cadmium Tellurite Glasses

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
I. V. García-Amaya ◽  
Ma. E. Zayas ◽  
J. Alvarado-Rivera ◽  
E. Álvarez ◽  
S. A. Gallardo-Heredia ◽  
...  
Keyword(s):  
Raman Spectra ◽  
Glass Matrix ◽  
Light Emission ◽  
Spectroscopic Studies ◽  
Amorphous Structure ◽  
Nitrate Hexahydrate ◽  
Europium Nitrate ◽  
Oxide Glasses ◽  
Quenching Method ◽  
Europium Nitrate Hexahydrate

The effect of europium doping on the photoluminescence of ZnO-CdO-TeO2glasses is analyzed. TeO2-based glasses are of high interest as hosts for laser glasses. The Eu-doped oxide glasses were prepared by the conventional melt-quenching method. Five different concentrations of europium nitrate hexahydrate that varied from 0.3 to 1.5 mol% were used. SEM observations revealed the formation of zinc aluminate spinel and disperse droplets of liquid-liquid phase separation in the glasses. X-Ray diffraction reveals the amorphous structure of the fabricated glasses. FT-IR and Raman spectra show the presence of TeO4and TeO3+1/TeO3units that conform with the glass matrix. Raman spectra evidenced a band located at 1556 cm−1that can be related to interstitial molecular oxygen in the glass matrix. Photoluminescence of the glasses showed light emission due to the following europiumtransitions from itsD52,D51, andD50levels to itsF7Jmanifolds:D52→F70(468 nm),D52→F72(490 nm),D52→F73(511 nm),D51→F71(536 nm),D51→F72(554 nm),D50→F70(579.5 nm),D50→F71(592 nm),D50→F72(613 nm),D50→F73(652 nm), andD50→F74(490 nm). The estimated decay time,τ, was 0.4 ms for all the glasses.

The luminescence of europium nitrate hexahydrate, Eu(NO3)3·6H2O

1988 ◽  
Vol 142 (1) ◽  
pp. 165-168 ◽  
Author(s):  
G. Blasse ◽  
G.J. Dirksen ◽  
J.P.M. van Vliet
Keyword(s):  
Nitrate Hexahydrate ◽  
Europium Nitrate ◽  
Europium Nitrate Hexahydrate

Thermal properties of europium nitrate hexahydrate Eu(NO3)3·6H2O

2016 ◽  
Vol 128 (3) ◽  
pp. 1353-1358 ◽  
Author(s):  
P. Melnikov ◽  
I. V. Arkhangelsky ◽  
V. A. Nascimento ◽  
L. C. S. de Oliveira ◽  
A. F. Silva ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Nitrate Hexahydrate ◽  
Europium Nitrate ◽  
Europium Nitrate Hexahydrate

ChemInform Abstract: Luminescence of Europium Nitrate Hexahydrate, Eu(NO3)3·6 H2O.

ChemInform ◽  
1988 ◽  
Vol 19 (17) ◽  
Author(s):  
G. BLASSE ◽  
G. J. DIRKSEN ◽  
J. P. M. VAN VLIET
Keyword(s):  
Nitrate Hexahydrate ◽  
Europium Nitrate ◽  
Europium Nitrate Hexahydrate

Structures of chemically stabilized ceramics

1993 ◽  
Vol 51 ◽  
pp. 924-925
Author(s):  
Pratibha L. Gai ◽  
M. A. Saltzberg ◽  
L.G. Hanna ◽  
S.C. Winchester
Keyword(s):  
High Temperature ◽  
Calcium Nitrate ◽  
Nitrate Hexahydrate ◽  
Chemical Route ◽  
Cubic Form ◽  
Tetragonal Form ◽  
Wet Chemical ◽  
Wet Chemical Route ◽  
Final Composition ◽  
Aluminium Nitrate Nonahydrate

Silica based ceramics are some of the most fundamental in crystal chemistry. The cristobalite form of silica has two modifications, α (low temperature, tetragonal form) and β (high temperature, cubic form). This paper describes our structural studies of unusual chemically stabilized cristobalite (CSC) material, a room temperature silica-based ceramic containing small amounts of dopants, prepared by a wet chemical route. It displays many of the structural charatcteristics of the high temperature β-cristobalite (∼270°C), but does not undergo phase inversion to α-cristobalite upon cooling. The Structure of α-cristobalite is well established, but that of β is not yet fully understood.Compositions with varying Ca/Al ratio and substitutions in cristobalite were prepared in the series, CaO:Al2O3:SiO2 : 3-x: x : 40, with x= 0-3. For CSC, a clear sol was prepared from Du Pont colloidal silica, Ludox AS-40®, aluminium nitrate nonahydrate, and calcium nitrate hexahydrate in proportions to form a final composition 1:2:40 composition.

Synthesis and Characterization of Nanocrystalline ZnO Powders by a Direct Thermal Decomposition Route Using Zinc Nitrate Hexahydrate

2013 ◽  
Vol 770 ◽  
pp. 68-71 ◽  
Author(s):  
Supphadate Sujinnapram ◽  
Uraiphorn Termsuk ◽  
Atcharawan Charoentam ◽  
Sutthipoj Sutthana
Keyword(s):  
Thermal Decomposition ◽  
Crystallization Temperature ◽  
Zinc Nitrate ◽  
Zinc Nitrate Hexahydrate ◽  
Absorption Peak ◽  
Synthesis And Characterization ◽  
Nitrate Hexahydrate ◽  
Different Temperatures ◽  
Zno Powders

The nanocrystalline ZnO powders were synthesized by a direct thermal decomposition using zinc nitrate hexahydrate as starting materials. The precursor was characterized by TG-DTA to determine the thermal decomposition and crystallization temperature which was found to be at 325 oC. The precursors were calcined at different temperatures of 400, 500, and 600°C for 4 h. The structure of the prepared samples was studied by XRD, confirming the formation of wurtzite structure. The synthesized powders exhibited the UV absorption below 400 nm (3.10 eV) with a well defined absorption peak at around 285 nm (4.35 eV). The estimated direct bandgaps were obtained to be 3.19, 3.16, and 3.14 eV for the ZnO samples thermally decomposed at 400, 500, and 600°C, respectively.

scholarly journals Applications of a simultaneous differential scanning calorimetry–thermomicroscopy system

2021 ◽  
Author(s):  
Gage P. Ashton ◽  
Edward L. Charsley ◽  
Lindsay P. Harding ◽  
Gareth M. B. Parkes
Keyword(s):  
Silver Iodide ◽  
Magnesium Nitrate ◽  
Optical Data ◽  
Nitrate Hexahydrate ◽  
Scanning Calorimetry ◽  
Rubidium Nitrate ◽  
Complex Processes ◽  
Magnesium Nitrate Hexahydrate ◽  
Intensity Measurements ◽  
Reversible Transitions

AbstractA simultaneous DSC–thermomicroscopy system (DSC450 Linkam Scientific) was applied to the study of phase transitions in rubidium nitrate and silver iodide, the oxidation of polyethylene, the thermal degradation of polylactic acid and magnesium nitrate hexahydrate, and the reversible transitions in thermochromic inks. The results demonstrated the benefits of obtaining simultaneous optical data, both images and light intensity measurements, with DSC, particularly in the interpretation of complex processes and the detection of events with small changes in enthalpy.

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