Effecting factors of the emission spectral characteristics of rare-earth strontium aluminate for anti-counterfeiting application

2011 ◽  
Vol 131 (8) ◽  
pp. 1765-1769 ◽  
Author(s):  
Jishu Zhang ◽  
Mingqiao Ge
Keyword(s):  
Rare Earth ◽  
Spectral Characteristics ◽  
Strontium Aluminate

Morphology and spectral characteristics of a luminous fiber containing a rare earth strontium aluminate

2012 ◽  
Vol 82 (17) ◽  
pp. 1819-1826 ◽  
Author(s):  
Yanhong Yan ◽  
Mingqiao Ge ◽  
Yonggui Li ◽  
DNT Kumar
Keyword(s):  
Rare Earth ◽  
Spectral Characteristics ◽  
Strontium Aluminate

Effect of defects in the rare-earth sublattice of the Kondo insulator YbB12 on its spectral characteristics and magnetic susceptibility

2017 ◽  
Vol 124 (6) ◽  
pp. 957-967 ◽  
Author(s):  
P. A. Alekseev ◽  
A. V. Kuznetsov ◽  
P. S. Savchenkov ◽  
A. P. Menushenkov ◽  
N. Yu. Shitsevalova
Keyword(s):  
Magnetic Susceptibility ◽  
Rare Earth ◽  
Spectral Characteristics ◽  
Kondo Insulator ◽  
The Rare Earth

scholarly journals Calculation Of The Crystal Field Parameters For Eu3+ Doped In SrAl2O4 And SrIn2O4 Spinels

2012 ◽  
Vol 56 (1) ◽  
pp. 132-138
Author(s):  
M. L. Stanciu
Keyword(s):  
Experimental Data ◽  
Rare Earth ◽  
Crystal Field ◽  
Energy Levels ◽  
Superposition Model ◽  
Strontium Aluminate ◽  
Intrinsic Parameters ◽  
Broadband Emission ◽  
Host Materials ◽  
Crystal Field Parameters

AbstractStrontium aluminate (SrAl2O4) and the indium aluminate (SrIn2O4) spinels have been proven to be efficient host materials, which offer the possibility of generating broadband emission after doping with rare earth trivalent ions. The present work is devoted to the calculation of the crystal field parameters and the energy levels of the trivalent europium doped in SrAl2O4 and SrIn2O4 spinels, using the superposition model of the crystal field. Using the intrinsic parameters for Eu3+-O2− bonds, and the geometry structure of the each crystal, we modeled the CFPs and simulated the low-lying energy levels schemes. The obtained results are compared with the experimental data and discussed.

Structures and Optical Properties of Nanoforest-Like Carbon Nanotubes Decorated with Nanoparticles of Strontium Aluminate Doped with Rare-Earth Elements

MRS Advances ◽  
2018 ◽  
Vol 3 (1-2) ◽  
pp. 121-126
Author(s):  
Patsy Y. Arquieta Guillén ◽  
Alena Borisovna Kharissova ◽  
Beatriz Ortega García ◽  
Oxana V. Kharissova
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Metal Oxides ◽  
Spray Pyrolysis ◽  
Metal Oxide Nanoparticles ◽  
Strontium Aluminate ◽  
Fluorescent Properties ◽  
Multi Wall Carbon Nanotubes

ABSTRACTNowadays, carbon nanotubes have a lot of applications in daily life, being applied in the fabrication of cellphones, computers, nanotransistors, among many others. Currently, their new applications in biotechnology area are in research, in particular in order to find new biosensors with fluorescent properties applying on the basis of multi-wall carbon nanotubes (MWCNTs). In this work, the obtaining of carbon nanoparticles having fluorescent properties via spray pyrolysis is presented. Synthesis, properties, structural peculiarities, and applications of nanobuds and related nanostructures are discussed. MWCNTs, decorated with strontium aluminate SrAl12O19 and doped with rare-earth elements, were synthetized from distinct organic precursors and the corresponding metal oxides. The metal oxides used were Samarium (Sm), Europium (Eu), Neodymium (Nd), Lanthanum (La), Cerium (Ce) and some their combinations.The synthesis was carried out on the surface of optical fibres to obtain a uniform growth of forest-like MWCNTs, adding to metal oxide nanoparticles to their surface. The preparation of composites was carried out by spray pyrolysis techniques in dry nitrogen atmosphere in the temperature range from 780 to 850°C. The formed products were characterized by Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), FTIR spectroscopy, Raman spectroscopy and UV/visible spectroscopies. The analysis of the obtained data shows that the deposited nanoparticles are in the range of size 20-60 nm being uniformly distributed on the surface of MWCNTs. The samples, obtained at different temperatures and with doping metal oxides added to SrAl12O19, show different fluorescence behavior. The best results were observed with lanthanum oxide as a dopant. Possible applications as persistently luminescent phosphors for the formed MWCNTs-supported luminescent materials are proposed.

Multilayer photosensitive structures based on porous silicon and rare-earth-element compounds: Study of spectral characteristics

2017 ◽  
Vol 51 (3) ◽  
pp. 353-356 ◽  
Author(s):  
N. Yu. Kirsanov ◽  
N. V. Latukhina ◽  
D. A. Lizunkova ◽  
G. A. Rogozhina ◽  
M. V. Stepikhova
Keyword(s):  
Rare Earth ◽  
Porous Silicon ◽  
Rare Earth Element ◽  
Earth Element ◽  
Spectral Characteristics

Photochromic properties of rare-earth strontium aluminate luminescent fiber

2011 ◽  
Vol 12 (7) ◽  
pp. 875-879 ◽  
Author(s):  
Xuefeng Guo ◽  
Mingqiao Ge ◽  
Jumei Zhao
Keyword(s):  
Rare Earth ◽  
Strontium Aluminate ◽  
Photochromic Properties

Mechanoluminescence glow curves of rare-earth doped strontium aluminate phosphors

2011 ◽  
Vol 33 (3) ◽  
pp. 444-451 ◽  
Author(s):  
B.P. Chandra ◽  
V.D. Sonwane ◽  
B.K. Haldar ◽  
S. Pandey
Keyword(s):  
Rare Earth ◽  
Strontium Aluminate ◽  
Rare Earth Doped
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