Upconversion properties, multiphonon relaxation, and local environment of rare-earth ions in fluorophosphate glasses

1992 ◽  
Vol 45 (9) ◽  
pp. 4620-4625 ◽  
Author(s):  
Setsuhisa Tanabe ◽  
Shigeo Yoshii ◽  
Kazuyuki Hirao ◽  
Naohiro Soga
Keyword(s):  
Rare Earth ◽  
Local Environment ◽  
Rare Earth Ions ◽  
Multiphonon Relaxation

Achieving high thermal stability of different rare-earth ions in a single matrix host via the manipulation of the local structure by a solid solution

2020 ◽  
Vol 22 (28) ◽  
pp. 16294-16300
Author(s):  
Xiuxia Yang ◽  
Lei Zhao ◽  
Zhichao Liu ◽  
Shuyu Tian ◽  
Hao Zhang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solid Solution ◽  
Rare Earth ◽  
Local Structure ◽  
Local Environment ◽  
High Thermal Stability ◽  
Rare Earth Ions ◽  
Single Matrix ◽  
Thermal Stability Of

Manipulating the local environment of CAS by substitution of Al3+–Y3+ for Si4+–Ca2+ to achieve more stability in the structure of CYA.

scholarly journals Vibrational, Thermal, and Physical Characterizations of Some Zinc Niobo Tellurite Glasses Doped with Rare Earth (Eu, Dy)-=SUP=-*-=/SUP=-

2021 ◽  
Vol 129 (4) ◽  
pp. 527
Author(s):  
Afrash Ejigu A ◽  
K.P. Ramesh ◽  
Gajanan Honnavar
Keyword(s):  
Rare Earth ◽  
Packing Density ◽  
Local Environment ◽  
Peak Shift ◽  
Rare Earth Ions ◽  
Physical Parameters ◽  
Tellurite Glasses ◽  
Rare Earth Ion ◽  
Raman Spectroscopic ◽  
Doped Glasses

In this communication, we report physical and thermal properties along with Raman spectroscopic investigations on Zinc Niobo Tellurite glass systems doped with Eu2O3 and Dy2O3 at the expense of TeO2. The glasses have been synthesized by the melt quenching technique. Physical parameters like density, molar volume, packing density were estimated. The density of the un-doped glasses increases with increasing mol% of the modifier (ZnO) whereas the glass transition temperature (Tg) decreases. We have observed an increase in the density of the base glass systems which are doped with rare earth (RE) dopants. The packing density of the un-doped glasses remains almost constant with increasing modifier content suggesting that there is not much change in the local environment. Raman spectra were recorded at room temperature and assigned to TeO4 and TeO3 structural units in these glasses. The peak shift, full width at half maximum (FWHM) of the de-convoluted Raman peaks were analyzed to get information about the local environment. It is observed that these compositions of tellurite glasses are good host materials for rare earth ions as they offer voids in the network. Further, it was observed that the rare earth ion doping has not affected the local environment of the glasses; Dy3+ ions have a slightly higher tendency to polarize Te-O bonds than the Eu3+ ions. Keywords: Niobium-based tellurite glasses, XRD, DSC, FTIR.

Multiphonon relaxation in the rare-earth ions doped laser crystals

1996 ◽  
Author(s):  
T.T. Basiev ◽  
Yu.V. Orlovskii ◽  
K.K. Pukhov ◽  
V.B. Sigachev ◽  
M.E. Doroshenko ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Ions ◽  
Multiphonon Relaxation ◽  
Laser Crystals ◽  
The Rare Earth

Multiphonon relaxation of mid-IR transitions of rare-earth ions in the crystals with fluorite structure

2001 ◽  
Vol 94-95 ◽  
pp. 791-795 ◽  
Author(s):  
Yu.V. Orlovskii ◽  
T.T. Basiev ◽  
K.K. Pukhov ◽  
I.N. Vorobiev ◽  
A.G. Papashvili ◽  
...  
Keyword(s):  
Rare Earth ◽  
Fluorite Structure ◽  
Rare Earth Ions ◽  
Multiphonon Relaxation
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