Flux-Aided Synthesis of Lu2O3 and Lu2O3:Eu—Single Crystal Structure, Morphology Control and Radioluminescence Efficiency
Abstract
:1. Introduction
2. Results and Discussion
2.1. Structural Analysis
2.2. Flux-Stimulated Evolution of the Powders Morphology
2.3. Single Crystal Structural Analysis
Chemical Formula | Lu2O3 |
---|---|
Formula Mass | 397.94 |
Crystal system | regular |
a/Å | 10.393(2) |
Unit cell volume/Å3 | 1122.6(6) |
Temperature/K | 298(2) |
Space group | Ia3 |
No. of formula units per unit cell, Z | 16 |
No. of reflections measured | 8753 |
No. of independent reflections | 1789 |
Rint | 0.0425 |
Final R1 values (I > 2σ(I)) | 0.0287 |
Final wR(F2) values (I > 2σ(I)) | 0.0555 |
Final R1 values (all data) | 0.0307 |
Final wR(F2) values (all data) | 0.0560 |
Atoms involved | Distance (Å), Angle (°) |
---|---|
Lu1—O1 | 2.2392(18) |
Lu1—Lu2 | 3.4395(7) |
Lu2—O1 | 2.2277(19) |
Lu2—O1i | 2.2945(19) |
Lu2—O1x | 2.1954(18) |
O1—Lu1—O1i | 80.10(6) |
O1—Lu1—O1ii | 99.90(6) |
O1—Lu1—O1iii | 180.0 |
O1x—Lu2—O1xi | 87.14(10) |
O1x—Lu2—O1 | 99.66(6) |
O1xi—Lu2—O1 | 109.94(8) |
O1—Lu2—O1xii | 138.89(9) |
O1x—Lu2—O1i | 79.57(7) |
O1xi—Lu2—O1i | 165.12(5) |
O1—Lu2—O1i | 79.15(9) |
O1x—Lu2—O1xiii | 165.12(5) |
O1—Lu2—O1xiii | 78.91(6) |
O1i—Lu2—O1xiii | 114.36(9) |
2.4. Radioluminescent Properties
Lu2O3:Eu sample # | XEL Efficiency (%) |
---|---|
SIV-1 | 72 |
SIV-1-900 | 105 |
SIV-1-1200 | 97 |
SIV-2 | 66 |
SIV-2-900 | 95 |
SIV-3 | 80 |
SIV-4 | 75 |
3. Experimental Section
Series | Sample # | Batch Composition (g) | Process Parameters | Product Composition | |||
---|---|---|---|---|---|---|---|
Lu2O3 | Eu2O3 | Li2SO4 | SiO2 | Temperature (°C)/Time (h) | |||
I | SI-1 | 1.7585 | – | 13.97 | 0.2661 | 1300/1 | Lu2SiO5, Lu2O3 |
SI-2 | 1.7585 | – | 13.97 | 0.2661 | 1300/2 | Lu2SiO5, Lu2O3 | |
SI-3 | 1.7585 | – | 13.97 | 0.2661 | 1300/20 | Lu2O3 | |
II | SII-1 | 2 | – | 2 | – | 1400/50 | Lu2O3 |
SII-2 | 2 | – | 4.77 | – | Lu2O3 | ||
SII-3 | 2 | – | 9.54 | – | Lu2O3 | ||
III | SIII-1 | 2 | – | 4.77 | 0.045 | Lu2O3 | |
SIII-2 | 2 | – | 4.77 | 0.15 | Lu2O3 | ||
SIII-3 | 2 | – | 4.77 | 0.3 | Lu2O3 | ||
SIII-4 | 2 | – | 9.54 | 0.3 | Lu2O3 | ||
IV | SIV-1 | 1.9 | 0.0884 | 4.77 | 0.045 | Lu2O3 | |
SIV-2 | 1.9 | 0.0884 | 9.54 | 0.3 | Lu2O3 | ||
SIV-3 | 1.9 | 0.0884 | 4.77 | 0.3 | Lu2O3 | ||
SIV-4 | 1.84 | 0.1415 | 4.77 | 0.3 | Lu2O3 |
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Zeler, J.; Jerzykiewicz, L.B.; Zych, E. Flux-Aided Synthesis of Lu2O3 and Lu2O3:Eu—Single Crystal Structure, Morphology Control and Radioluminescence Efficiency. Materials 2014, 7, 7059-7072. https://doi.org/10.3390/ma7107059
Zeler J, Jerzykiewicz LB, Zych E. Flux-Aided Synthesis of Lu2O3 and Lu2O3:Eu—Single Crystal Structure, Morphology Control and Radioluminescence Efficiency. Materials. 2014; 7(10):7059-7072. https://doi.org/10.3390/ma7107059
Chicago/Turabian StyleZeler, Justyna, Lucjan B. Jerzykiewicz, and Eugeniusz Zych. 2014. "Flux-Aided Synthesis of Lu2O3 and Lu2O3:Eu—Single Crystal Structure, Morphology Control and Radioluminescence Efficiency" Materials 7, no. 10: 7059-7072. https://doi.org/10.3390/ma7107059