Otsuka T, Brehl M, Cicconi MR, de Ligny D, Hayakawa T (2021)
Publication Type: Journal article
Publication year: 2021
Book Volume: 14
Journal Issue: 4
DOI: 10.3390/ma14040952
Thermal evolutions of calcium-tungstate-borate glasses were investigated for the development of luminescent glass-ceramics by using Eu3+ dopant in a borate glass matrix with calcium tungstate, which was expected to have a combined character of glass and ceramics. This study revealed that single-phase precipitation of CaWO4 crystals in borate glass matrix was possible by heat-treatment at a temperature higher than glass transition temperature T-g for (100-x) (33CaO-67B(2)O(3))-xCa(3)WO(6) (x = 8-15 mol%). Additionally, the crystallization of CaWO4 was found by Raman spectroscopy due to the formation of W=O double bondings of WO4 tetrahedra in the pristine glass despite starting with the higher calcium content of Ca3WO6. Eu3+ ions were excluded from the CaWO4 crystals and positioned in the borate glass phase as a stable site for them, which provided local environments in higher symmetry around Eu3+ ions.
APA:
Otsuka, T., Brehl, M., Cicconi, M.R., de Ligny, D., & Hayakawa, T. (2021). Thermal Evolutions to Glass-Ceramics Bearing Calcium Tungstate Crystals in Borate Glasses Doped with Photoluminescent Eu3+ Ions. Materials, 14(4). https://doi.org/10.3390/ma14040952
MLA:
Otsuka, Takahito, et al. "Thermal Evolutions to Glass-Ceramics Bearing Calcium Tungstate Crystals in Borate Glasses Doped with Photoluminescent Eu3+ Ions." Materials 14.4 (2021).
BibTeX: Download