Tb3+ as a probe for the molecular structure of mixed barium magnesium alumino silicate glasses

Assadi, Achraf Amir; Herrmann, Andreas; Tewelde, M.; Damak, Kamel; Elleuch, Riadh; Rüssel, Christian

doi:10.1016/j.jlumin.2018.03.012

Cited by 23 publications

(19 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a macroscopic scale, this effect results in a lower glass transition temperature, T g , and lower melt viscosity of the 20Mg composition in comparison to the 20Ba composition, while exactly the opposite effect occurs for the peralkaline compositions. Here, 30Ba has a lower glass transition temperature and lower viscosity than 30Mg [ 14 ].…”

Section: Resultsmentioning

confidence: 99%

“…Additionally, a lifetime increasing effect in peralkaline glass compositions with low field strength network-modifier ions was found. These relations were observed for several different rare earth ions such as Sm 3+ [ 12 ], Eu 3+ [ 11 , 12 ], and Tb 3+ [ 14 ]. However, up to now, this behavior could not be rationalized making the targeted design of aluminosilicate glasses for laser applications a cumbersome process.…”

Section: Introductionmentioning

confidence: 95%

“…For both NMO, the chemical compositions of the undoped glass models are x NMO·(40 − x )Al 2 O 3 ·60 SiO 2 with x = 20 mol% (metaluminous glass composition: 20Mg , 20Ba ) and x = 30 mol% (peralkaline glass composition: 30Mg , 30Ba ). Since the same dependence of the luminescence properties on the glass composition was observed in experiments irrespective of the rare earth ion used (Sm 3+ , Eu 3+ , Tb 3+ , Dy 3+ ) [ 11 , 12 , 14 ], Gd 3+ was chosen as model rare earth ion because of its similar ionic radius [ 31 ] and the available interatomic potential parameters. All structure models contain approximately 1 mol% Gd 2 O 3 .…”

Section: Computational Detailsmentioning

confidence: 99%

“…Recently, several studies on rare earth doped aluminosilicate glasses were published. As dopants, ytterbium, samarium, europium, and other ions were used [ 11 , 12 , 13 , 14 ]. It was shown that the base composition of glass has a strong impact on the luminescence properties of the dopant rare earth ions, e.g., the spectral shape of their absorption and emission spectra as well as their luminescence lifetimes.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Structure Prediction of Rare Earth Doped BaO and MgO Containing Aluminosilicate Glasses–the Model Case of Gd2O3

et al. 2018

View full text Add to dashboard Cite

The medium-range atomic structure of magnesium and barium aluminosilicate glasses doped with Gd2O3 as a model rare earth oxide is elucidated using molecular dynamics simulations. Our structure models rationalize the strong dependence of the luminescence properties of the glasses on their chemical composition. The simulation procedure used samples’ atomic configurations, the so-called inherent structures, characterizing configurations of the liquid state slightly above the glass transition temperature. This yields medium-range atomic structures of network former and modifier ions in good agreement with structure predictions using standard simulated annealing procedures. However, the generation of a large set of inherent structures allows a statistical sampling of the medium-range order of Gd3+ ions with less computational effort compared to the simulated annealing approach. It is found that the number of Si-bound non-bridging oxygen in the vicinity of Gd3+ considerably increases with growing ionic radius and concentration of network-modifier ions. In addition, structure predictions indicate a low driving force for clustering of Gd3+, yet no precise correlation between the atomic structure and luminescence lifetimes can be conclusively established. However, the structure models provided in this study can serve as a starting point for future quantum mechanical simulations to shed a light on the relation between the atomic structure and optical properties of rare earth doped aluminosilicate glasses.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Section: Computational Detailsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Structure Prediction of Rare Earth Doped BaO and MgO Containing Aluminosilicate Glasses–the Model Case of Gd2O3

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Tb 3+ is a well known fluorescent ion that is widely used in scintillator, phosphor, and even laser materials. It was already shown that Tb 3+ can be used as a very sensitive probe in glass structure research . Absorption and fluorescence measurements can provide information on the local microstructure in the vicinity of the doped ions and on the glass‐matrix.…”

Section: Introductionmentioning

confidence: 99%

Tb³⁺as probe ion—Clustering and phase separation in borate and borosilicate glasses

Herrmann

Völksch

Ehrt

2019

Int J of Appl Glass Sci

View full text Add to dashboard Cite

Various borate and borosilicate glasses doped with Tb 3+ in a broad concentration range of 1 × 10 18 to 1 × 10 21 Tb 3+ per cm 3 (~0.01 to 10 wt% Tb 2 O 3 ) were prepared and characterized by different methods. Static fluorescence excitation and emission spectra of Tb 3+ in the ultraviolet-visible range were recorded. The fluorescence decay rates of the green emission were measured and fitted. Different lifetimes dependent on different local sites of Tb 3+ ions were detected. To identify these different local sites crystalline terbium borate, TbBO 3 , was prepared and investigated. X-ray diffraction (XRD) and electron microscopy measurements were used. Very strong clustering effects of Tb 3+ ions were detected as preliminary stage of phase separation by formation of a very short decay rate in optically clear borate containing glasses with low optical basicity. In glass samples with phase separation, the Tb 3+ ions were accumulated in the phase with higher optical basicity. The local sites of the Tb 3+ ions in the clusters induce a short lifetime which is similar to the lifetime of crystalline TbBO 3 . Only mono-exponential decay curves for Tb 3+ fluorescence were detected in sodium borosilicate glass with high optical basicity, and in zinc borate glass, without tendency to phase separation. K E Y W O R D S borate, borosilicate, clustering of Tb 3+ , glass forming systems, glass forming systems liquid-liquid, phase transition How to cite this article: Herrmann A, Völksch G, Ehrt D. Tb 3+ as probe ion-Clustering and phase separation in borate and borosilicate glasses. Int J Appl Glass Sci.

show abstract

Lanthanide-Doping Effects on the Formation of Leucite KAlSi2O6

Sabaliauskiene

Beganskienė

Ishikawa

et al. 2019

Silicon

View full text Add to dashboard Cite

Tb3+ as a probe for the molecular structure of mixed barium magnesium alumino silicate glasses

Cited by 23 publications

References 34 publications

Structure Prediction of Rare Earth Doped BaO and MgO Containing Aluminosilicate Glasses–the Model Case of Gd2O3

Structure Prediction of Rare Earth Doped BaO and MgO Containing Aluminosilicate Glasses–the Model Case of Gd2O3

Tb³⁺as probe ion—Clustering and phase separation in borate and borosilicate glasses

Lanthanide-Doping Effects on the Formation of Leucite KAlSi2O6

Contact Info

Product

Resources

About

Tb3+ as a probe for the molecular structure of mixed barium magnesium alumino silicate glasses

Cited by 23 publications

References 34 publications

Structure Prediction of Rare Earth Doped BaO and MgO Containing Aluminosilicate Glasses–the Model Case of Gd2O3

Structure Prediction of Rare Earth Doped BaO and MgO Containing Aluminosilicate Glasses–the Model Case of Gd2O3

Tb3+as probe ion—Clustering and phase separation in borate and borosilicate glasses

Lanthanide-Doping Effects on the Formation of Leucite KAlSi2O6

Contact Info

Product

Resources

About

Tb³⁺as probe ion—Clustering and phase separation in borate and borosilicate glasses