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Phase-dependent emission of KLaF4:Nd3+ nanocrystals in oxyfluoride glass-ceramics

AuthorsCabral, A. A.; Gorni, Giulio; Velázquez, J. J.; Pascual, M. Jesús ; Durán, Alicia ; Fernández, Joaquín ; Balda, Rolindes
Issue Date2-Feb-2019
CitationProceedings Optical Components and Materials XVI: 109140S (2019)
AbstractTransparent oxyfluoride glass-ceramics obtained by the adequate heat treatment of Nd3+-doped glass with composition 70SiO2–7Al2O3–16K2O–7LaF3 (mol%) are investigated. Site-selective laser spectroscopy demonstrates that depending on the Nd3+ concentration, cubic (α-phase) and hexagonal (β-phase) KLaF4 nanocrystals precipitate from the starting glass. The presence of both crystalline phases are unambiguously identified from the emission and excitation spectra and lifetime measurements of the 4F3/2 state of Nd3+ ions. The spectroscopic results are in agreement with those obtained with XRD and HR-TEM techniques: α-KLaF4 nanocrystals are found to be present for all NdF3 concentrations whereas β-KLaF4 nanocrystals are predominant in the GC samples doped with 0.5 mol%.
DescriptionTrabajo presentado en SPIE OPTO, celebrado en San Francisco (Estados Unidos), del 2 al 7 de febrero 2019
Publisher version (URL)https://doi.org/10.1117/12.2507266
Identifiersdoi: 10.1117/12.2507266
Appears in Collections:(CFM) Comunicaciones congresos
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