An Investigation into the Effects of Composition and BaF2 Content on the Structure and Crystallization Behavior of SiO2-Al2O3-K2O-BaF2 Oxyfluoride Glasses

Document Type: Original Research Article

Authors

1 Department of Materials Engineering, Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran

2 Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran

Abstract

Nowadays, oxyfluoride glasses have received much attention from photonic researchers as they benefit from the advantages of both oxide and fluoride glasses (low phonon energy in parallel with high mechanical and chemical durability). The purppose of this paper was to study the different glass compositions in SiO2-Al2O3-K2O-BaF2 system and investigate the BaF2 effects on their crystallization behavior and structure. Therefore, various chemical compositions with different amounts of BaF2 (20, 30, and 40mol%) were chosen and melted in alumina crucibles at 1450˚C. The sample could not melt with the lowest percentage of BaF2. On the other hand, the glass composition containing the highest amount of BaF2 was not able to show high transparency due to the phase separation that occurred in it. Finally, the sample with a 30mole ratio of BaF2 was chosen as the optimized sample due to the favorable transparency. XRD patterns showed that the samples were amorphous and it somehow proved the low transparency in the presence of higher amounts of BaF2 arose from phase separation than the unwanted crystallization. According to the DTA results, the crystallization peak of the fluoride phase decreased from 693˚C to 678˚C by increasing the content of BaF2. FT-IR spectra approved the oxyfluoride structure of the glasses. Higher BaF2 content increased the absorption of peaks in FT-IR spectra since it results in a more discontinuous structure. Fluorine loss was higher for the glass containing the highest amount of BaF2 due to the lower amount of Al2O3 in its composition.

Keywords

Main Subjects


 

  1. Song, S. A., Kim, D. S., Jeong, H. M., Lim, K. S., “Upconversion in Nd–Tm–Yb triply doped oxyfluoride glass–ceramics containing CaF2 nanocrystals”, Journal of Luminescence, Vol. 152, (2014), 75-78.
  2. Sung, Y. M., “Crystallization kinetics of fluoride nanocrystals in oxyfluoride glasses”, Journal of Non-Crystalline Solids, Vol. 358, No. 1, (2012), 36–39.
  3. Lavín, V., Lahoz, F., Martín, I. R., Rodríguez-Mendoza, U. R., “Optical properties of rare-earth ions in transparent oxyfluoride glass-ceramics”, Photonic Glasses, Research Signpost, Kerala, (2006), 115-149.
  4. Dejneka, M. J., “The luminescence and structure of novel transparent oxyfluoride glass-ceramics”, Journal of Non-Crystalline solids, Vol. 239, No. 1-3, (1998), 149-155.
  5. Wang, Y., Ohwaki, J., “New transparent vitroceramics codoped with Er3+ and Yb3+ for efficient frequency upconversion”, Applied Physics Letters, Vol. 63, No. 24, (1993), 3268-3270.
  6. Shinozaki, K., Honma, T., Oh-Ishi, K., Komatsu, T., “Morphology of CaF2 nanocrystals and elastic properties in transparent oxyfluoride crystallized glasses”, Optical Materials, Vol. 33, No. 8, (2011), 1350–1356.
  7. Sun, X. Y., Huang, S. M., “Tb3+ activated SiO2-Al2O3-CaO-CaF2 oxyfluoride scintillating glass ceramics”, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 621, No. 1-3, (2010), 322-325.
  8. Hahn, D., “Calcium fluoride and barium fluoride crystals in optics: multispectral optical materials for a wide spectrum of applications”, Optik & Photonik, Vol. 9, No. 4, (2014), 45-48.
  9. Imanieh, M. H., Eftekhari Yekta, B., Marghussian, V., Shakhesi, S., Martín, I. R., “Crystallization of nano calcium fluoride in CaF2-Al2O3-SiO2 system”, Solid State Sciences, Vol. 17, (2013), 76-82.
  10. Markis., J. H., Clemens, K., Tomozawa, M., “Effect of fluorine on the phase separation of Na2O-SiO2 glasses”, Journal of the American Ceramic Society, Vol. 64, No. 1, (1981), C-20.
  11. khani V., Alizade P., “Influence of Heat Treatment on Crystallization and Transparency of Glass-Ceramics Containing Lithium-Mica Nanocrystals”, Journal of Metallurgical and Materials Engineering, Vol. 24, No. 2, (2013), 39-48. https://doi.org/10.22067/ma.v24i2.28319
  12. Antuzevics, A., Kemere, M., Ignatans, R., “Local structure of gadolinium in oxyfluoride glass matrices containing SrF2 and BaF2 crystallites”, Journal of Non-Crystalline Solids, Vol. 449, (2016), 29–33.
  13. Qia, X., Fan, X., Wang, M., “Luminescence behavior of Er3+ in glass ceramics containing BaF2 nanocrystals”, Scripta Materialia, Vol. 55, No. 3, (2006), 211-214.
  14. Huang, L., Jia, S., Li, Y., Zhao, S., Deng, D., Wang, H., Jia, G., Hua, Y., Xu, S., “Enhanced emissions in Tb3+- doped oxyfluoride scintillating glass ceramics containing BaF2 nanocrystals”, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 788, (2015), 111-115.
  15. Xusheng, Q., Qun, L., Xianping, F., Minquan, W., “Local vibration around rare earth ions in alkaline earth fluorosilicate transparent glass and glass ceramics using Eu3+ probe”, Journal of Rare Earths,Vol. 26, No. 6, (2008), 883-888.
  16. Biswas, K., Sontakke, A. D., Ghosh, J., Annapurna, K., “Enhanced Blue Emission from Transparent Oxyfluoride Glass–Ceramics Containing Pr3+:BaF2 Nanocrystals”, Journal of the American Ceramic Society, Vol. 93, No. 4, (2010), 1010-1017.
  17. Hou, Z. X., Li, H. X., Xue, Z. L., Wang, M. H., Hu, X. D., Wang, S. H., “Preparation and up-conversion characterization of CaF2:Yb3+, Ho3+/BaF2:Yb3+, Ho3+ co-doped glasses and glass–ceramics”, Journal of Alloys and Compounds, Vol. 640, (2015), 311–316.
  18. Kasprzyk, M., Środa, M., Szumera, M., “Influence of Gd2O3 on thermal stability of oxyfluoride glasses”, Journal of Thermal Analysis and Calorimetery, Vol. 130, No. 1, (2017), 207–220.
  19. Rüssel, C., “Nanocrystallization of CaF2 from Na2O/K2O/CaO/CaF2/Al2O3/SiO2 glasses”, Chemistry of Materials, Vol. 17, No. 23, (2005), 5843–5847.
  20. Bocker, C., Rüssel, C., “Self-organized nano-crystallisation of BaF2 from Na2O/K2O/BaF2/Al2O3/SiO2 glasses”, Journal of the European Ceramic Society, Vol. 29, No. 7, (2009), 1221–1225.
  21. Kumar, R., Molla, A. R., Chakrabarti, A., Tarafder, A., “Eu3+-doped transparent potassium lanthanum silicate (KLaSiO4) glass-ceramic nanocomposites: Synthesis, properties and application”, Journal of the European Ceramic Society, Vol. 38, No. 6, (2018), 2639-2648.
  22. Aniseh, N., Rezvani, M., Ghahremanzadeh, H., Tabean, S., “Investigation of crystallization and sinterability properties of BaO-SiO2-Al2O3 glass-ceramics containing K2O and B2O3”, Advanced Ceramics Progress,Vol. 1, No. 3, (2015), 1-10.
  23. Mukherjee, D. P., Das, S. K., “Effects of Nano Silica on Synthesis and Properties of Glass Ceramics in SiO2-Al2O3-CaO-CaF2 Glass System: A Comparison”, Journal of Non- Crystalline Solids, Vol. 368, (2013), 98-104.
  24. Kovalgin, A. Y., F., Chabert-Rocabois, F., Hitchman, M. L., Shamlian, S. H., Alexandrov, S. E., “A Study by In SituFTIR Spectroscopy of the Decomposition of Precursors for the MOCVD of High Temperature Superconductors”, Le Journal de Physique IV, Vol. 5, No. C5, (1995), C5-357.
  25. Kumar, D., Ward, R. G., Williams, D., “Effect of fluorides on silicates and phosphates”, Discussions of the Faraday Society, Vol. 32, (1961), 147-154.
  26. Yamazaki, H., Ishikawa, Y., Fujii, M., Ueoka, Y., Fujiwara, M., Takahashi, E., Andoh, Y., Maejima, N., Matsui, H., Matsui, F., Daimon, H., Uraoka, Y., “The Influence of Fluorinated Silicon Nitride Gate Insulator on Positive Bias Stability toward Highly Reliable Amorphous InGaZnO Thin-Film Transistors”, ECS Journal of Solid State Science and Technology, Vol. 3, No. 2, (2013), Q20.
  27. Yamane, M., Mizoguchi, K., Suginohara, Y., Kaneko, Y., “Structural analysis for fluorosilicate glasses by X-ray photoelectron spectroscopy”, Research Report of Kyushu Institute of Technology (Engineering), Vol. 51, (1985), 41- 48.
  28. Limcharoen, A., Limsuwan, P., Pakpum, C., Siangchaew, K., “Characterisation of C-F polymer film formation on the air-bearing surface etched sidewall of fluorine-based plasma interacting with Al2O3-TiC substrate”, Journal of Nanomaterials, Vol. 2013, (2013), 1-6.