Spectroscopic Properties of Rare Earth Ion Doped TeO2-B2O3-PbO Glass

2014 ◽  
Vol 69 (6) ◽  
Author(s):  
A. Noranizah ◽  
K. Azman ◽  
H. Azhan ◽  
E. S. Nurbaisyatul ◽  
A. Mardhiah
Keyword(s):  
Refractive Index ◽  
Rare Earth ◽  
Glass Sample ◽  
Spectroscopic Properties ◽  
Molar Refraction ◽  
Energy Band Gap ◽  
Melt Quenching ◽  
Rare Earth Ion ◽  
Optical Energy Band Gap ◽  
Oxide Ion

This work focuses on the spectroscopic study of RE3+ ion, namely, trivalent neodymium (Nd3+) doped lead borotellurite glass with a composition of TeO2-B2O3-PbO. The glass sample has been prepared by conventional melt-quenching technique. The density, molar volume and optical energy band gap of these glasses have been measured. The refractive index, molar refraction and polarizability of oxide ion have been calculated by using Lorentz-Lorentz relations. The absorption spectra are recorded using UV-Vis-NIR spectrometer in the range of 200-900 nm.

scholarly journals Optical properties of praseodymium doped silver-borate glasses

2014 ◽  
Vol 92 (10) ◽  
pp. 1154-1157
Author(s):  
G.V. Jagadeesha Gowda ◽  
B. Eraiah
Keyword(s):  
Refractive Index ◽  
Band Gap ◽  
Energy Band ◽  
Molar Refraction ◽  
Optical Parameters ◽  
Borate Glasses ◽  
Energy Band Gap ◽  
Optical Energy ◽  
Optical Energy Band Gap ◽  
Oxide Ion

Praseodymium doped silver–borate glasses having composition xPr6O11–(25 – x)Ag2O–75B2O3 (x = 0, 1, 2, 3, 4, 5) were prepared by conventional melt quenching method. The density, molar volume, and optical energy band gap of these glasses were measured. Optical absorption spectra of these glasses were recorded in the range 300–1000 nm at room temperature. The refractive index, molar refraction, and polarizability of oxide ion were calculated by using Lorentz–Lorentz relations. The oxide ion polarizabilities deduced from two different quantities, viz. refractive index and optical energy band gap, agree well compared with other glasses. The variation of the preceding optical parameters with respect to praseodymium concentration is explained.

Internal Friction Study of the Rare Earth Ion Substituted Fast Oxide-Ion Conductors (La1-ΧreΧ)2Mo2O9 (Re=Nd, Gd)

2012 ◽  
Vol 184 ◽  
pp. 110-115
Author(s):  
X.P. Wang ◽  
J. Hu ◽  
Zhong Zhuang ◽  
Tao Zhang ◽  
Qian Feng Fang
Keyword(s):  
Phase Transition ◽  
Rare Earth ◽  
Internal Friction ◽  
Diffusion Processes ◽  
Rare Earth Ion ◽  
Disorder Transition ◽  
Oxide Ion Conductors ◽  
Oxide Ion ◽  
The Rare Earth ◽  
Ion Conductors

The relaxation and phase transition behaviors of rare-earth ion substituted fast oxide-ion conductors (La1-xRex)2Mo2O9 (Re=Nd, Gd) were investigated by internal friction (IF) measurement in the temperature range 300 K - 950 K. Three different IF peaks (labeled as PL, PH, and PG, respectively) were observed in the rare-earth ion doped La2Mo2O9 samples. Peak PL corresponds to short diffusion processes of oxygen ions among different oxygen vacancy sites. Peak PH is associated with the static/dynamic disorder transition in oxygen ion distribution. Peak PG is a newly discovered peak embodying phase transition-like characteristics and is suggested to be related to order-disorder transition associated with the rearrangement of La/ Re sub-lattice.

The magnetic and spectroscopic properties of certain rare-earth double nitrates

1955 ◽  
Vol 232 (1191) ◽  
pp. 458-474 ◽  
Keyword(s):  
Rare Earth ◽  
Electric Field ◽  
Spectroscopic Properties ◽  
Rare Earth Ions ◽  
Rare Earth Ion ◽  
Crystalline Electric Field ◽  
Paramagnetic Resonance ◽  
Systematic Fashion ◽  
Resonance Data ◽  
Rare Earth Series

The theory that has been developed for rare-earth ions in crystals is here applied to the double nitrates. The paramagnetic resonance data and certain spectroscopic properties of the different rare-earth double nitrates, depending as they do on the crystalline electric field at a rare-earth ion, are related to the six parameters through which the field is defined. It is found that most of the experimental results can be fitted to values of the parameters that vary in a systematic fashion along the rare-earth series.

scholarly journals Instrumentation for Simultaneous Non-Destructive Profiling of Refractive Index and Rare-Earth-Ion Distributions in Optical Fiber Preforms

Instruments ◽  
2018 ◽  
Vol 2 (4) ◽  
pp. 23 ◽  
Author(s):  
Marilena Vivona ◽  
Michalis Zervas
Keyword(s):  
Refractive Index ◽  
Rare Earth ◽  
Optical Fiber ◽  
Communication Systems ◽  
Optical Tomography ◽  
Dopant Distribution ◽  
Fiber Preform ◽  
Rare Earth Ion ◽  
Non Destructive ◽  
Fiber Preforms

We present a non-destructive technique for a combined evaluation of refractive index and active-dopant distribution in the same position along a rare-earth-doped optical fiber preform. The method relies on luminescence measurements, analyzed through an optical tomography technique, to define the active dopant distribution and ray-deflection measurements to calculate the refractive index profile. The concurrent evaluation of both the preform refractive index and the active dopant profiles allows for an accurate establishment of the dopant distribution within the optical core region. This combined information is important for the optimization and development of a range of advanced fibers, used, for example, in a high-power fiber lasers and modern spatial-division-multiplexing optical communication systems. In addition, the non-destructive nature allows the technique to be used to identify the most appropriate preform segment, thus increasing fiber yield and reducing development cycles. We demonstrate the technique on an Yb3+-doped aluminosilicate fiber preform and compare it with independent refractive index and active-dopant measurements. This technique will be useful for quality evaluation and optimization of optical fiber preforms and lends itself to advanced instrumentation.

Recent Progress on the Spectroscopy of Rare Earth Ions in Core–Shells, Nanowires, Nanotubes, and Other Novel Nanostructures

2008 ◽  
Vol 8 (3) ◽  
pp. 1126-1137 ◽  
Author(s):  
Xueyuan Chen ◽  
Liqin Liu ◽  
Guokui Liu
Keyword(s):  
Optical Properties ◽  
Rare Earth ◽  
Recent Progress ◽  
Spectroscopic Properties ◽  
Rare Earth Ions ◽  
Laser Materials ◽  
Rare Earth Ion ◽  
Fundamental Understanding ◽  
Low Dimensional ◽  
Rare Earth Series

Research and development of nanoscale luminescent and laser materials are part of the rapidly advancing nanoscience and nanotechnology. Because of unique spectroscopic properties and luminescent dynamics of f-electron states, doping luminescent rare earth ions into nano-hosts has been demonstrated as an optimistic approach to developing highly efficient and stable nanophosphors for various applications. In this article, we review the most recent progress in spectroscopic measurements of rare earth ion-activated low-dimensional nanostructures including nanolayers, core–shells, nanowires, nanotubes, and nanodisks. Among a large volume of work reported in the literature on many members of the rare earth series including Ce3+, Pr3+, Nd3+, Eu3+, and Er3+, we focus on recent findings in the spectroscopic and luminescence properties of Eu3+ doped nanolayers, core–shells, and nanotubes, because Eu3+ ions have been extensively studied and widely used as an ideal probe for fundamental understanding of nano-phenomena. Specifically, the dependence of the optical properties of rare earth ions on nanostructures is discussed in detail.

Effect of Sm3+ Concentration on Physical Properties of Magnesium Tellurite Glasses Containing Silver Nanoparticles

2016 ◽  
Vol 846 ◽  
pp. 107-114 ◽  
Author(s):  
Nurulhuda Mohammad Yusoff ◽  
M.R. Sahar
Keyword(s):  
Silver Nanoparticles ◽  
Refractive Index ◽  
Physical Properties ◽  
Molar Volume ◽  
X Ray Diffraction ◽  
Energy Band Gap ◽  
A Value ◽  
Optical Energy Band Gap ◽  
Amorphous Nature ◽  
The Relationship

A series of tellurite glass containing samarium ion and silver nanoparticles with a composition of (89.6-x)TeO2-10MgO-(x)Sm2O3-0.4AgCl with 0.2 ≤ x ≤ 1.0mol% have been synthesized by a conventional melt quenching technique. The X-ray diffraction pattern verified the amorphous nature of glasses. A systematic study on the relationship between Sm2O3 concentration and the physical properties of the glass has been made. The effect on the progressive replacement of TeO2 by Sm2O3 on density, molar volume, refractive index and electronic polarisability has been investigated. The results show that density and ionic packing density are in the range of 4.91-5.04 g cm-3 and 0.444 – 0.455, respectively, increases as the amount of Sm2O3 is increased up to 0.8 mol% and decrease afterward. However, the molar volume which is in between, 29.59-30.26 m3 mol-1 decreasing as the amount of Sm2O3 is increased up to 0.8 mol% and increase thereafter. Meanwhile the refractive index which is deduced from optical energy band gap is found to possess a value in the range of 2.37 to 2.45 and electronic polarisability is in the range of 7.14-7.51Å3. All the results will be discussed with respect to the glass composition.

Spectroscopic Properties of Ho3+ Doped in B2O3-SiO2-SrO-Bi2O3-TiO2 Glasses

2016 ◽  
Vol 675-676 ◽  
pp. 393-396
Author(s):  
Nattapon Srisittipokakun ◽  
Pruek Prongsamrong ◽  
Jakrapong Kaewkhao
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Spectroscopic Properties ◽  
Nominal Composition ◽  
Melt Quenching ◽  
Doped Glasses ◽  
Refractive Index Increase ◽  
Quenching Method

A series of glasses with nominal composition in (53-x)B2O3:11SiO2:34SrO:1Bi2O3:1TiO2: xHo2O3 (BSSBT) where x = 0.0, 0.5, 1.0, 1.5, 2.0 and 2.5 mol% was synthesized by conventional melt quenching method. The as-prepared glasses have been investigated and reported for their physical and optical properties. The results show that, the densities and refractive index increase with increasing Ho2O3 content in the glasses. The absorption peaks of doped glasses were observed at a wavelength of around 420, 460, 480, 540, 640 and 900 nm which are assigned to 5I8 ® 5G5, 5G6, 5F3, (5F4+5S2), 5F5 and 5I5 transitions of Ho3+, respectively.

scholarly journals Correlation among the oxide ion polarizability, optical basicity and interaction parameter in Gd3+ ions doped oxyhalide borate glasses

2021 ◽  
Vol 2070 (1) ◽  
pp. 012050
Author(s):  
G Chandrashekaraiah ◽  
V C Veeranna Gowda ◽  
A Jayasheelan ◽  
C Narayana Reddy ◽  
K J Mallikarjunaiah
Keyword(s):  
Refractive Index ◽  
Interaction Parameter ◽  
Glass Network ◽  
High Refractive Index ◽  
Borate Glasses ◽  
Melt Quenching ◽  
High Basicity ◽  
Quenching Method ◽  
Parameter Values ◽  
Oxide Ion

Abstract A borate glasses doped with rare earth Gd3+ ion in the system [6OB2O3 + 30 L12O + x Gd2O3 + (10-x) BiCl3] is prepared by the conventional melt quenching method and their optical properties have been studied. The oxide ion polarizability parameter is calculating by using refractive index of glass materials, which is obtained from UV-Vis spectra. The borate glasses are known to possess high oxide ion polarizability, high refractive index, high basicity and low interaction parameter values. In this present study, theoretical calculation of basicity and interaction parameter, using oxide ion polarization, of the glass network has been addressed. A good linear correlation between the interaction parameter and basicity is observed.

scholarly journals PREPARATION AND SPECTROSCOPIC PROPERTIES OF Ca2Al2SiO7: Tb3+ PHOSPHOR

2019 ◽  
Vol 128 (1B) ◽  
Author(s):  
Đỗ Thanh Tiến ◽  
Nguyễn Mạnh Sơn
Keyword(s):  
Rare Earth ◽  
Sintering Temperature ◽  
Spectroscopic Properties ◽  
Solid State Reaction Method ◽  
Electronic Transitions ◽  
Luminescent Intensity ◽  
Optimal Conditions ◽  
Rare Earth Ion ◽  
Flux Agent ◽  
Reaction Method

<p>The Tb<sup>3+</sup> rare earth ion doped Ca<sub>2</sub>Al<sub>2</sub>SiO<sub>7 </sub>material has tetragonal phase structure that has been successfully synthesized by solid state reaction method with optimal conditions: the sintering temperature at 1280<sup>o</sup>C for duration of 60 minutes and the B<sub>2</sub>O<sub>3</sub> flux agent content 4%wt. The Photoluminescence (PL) spectrum of Tb<sup>3+ </sup>doped Ca<sub>2</sub>Al<sub>2</sub>SiO<sub>7</sub> phosphor consists of narrow lines with peaks at 545 nm, 440 nm, 462 nm, 494 nm, 590 nm and 622 nm that corresponding to 4f electronic transitions of Tb<sup>3+</sup> ion. The peak at 545 nm has the highest luminescent intensity. The influence of synthesis technology and the luminescent characteristics of the phosphor are presented and discussed.</p>

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