Sm2+ in BAM: fluorescent probe for the number of luminescing sites of Eu2+ in BAM

Characterisation of the luminescence properties of BAM:Eu2+ particles as a tracer for thermographic particle image velocimetry

“…These sites might have different populations, and the saturation threshold could potentially be increased. The aforementioned studies [21,23,[30][31][32] agree on the existence of at least three sites named Beevers-Ross (BR), antiBeevers-Ross (aBR) and mid-Oxygen (mO). However, the position, strength, and width of the absorption band of each site are still not completely clear.…”

“…Emission collected at 460 nm. Reproduced with permission from [30] Many studies suggest that europium ions reside in different sites in the BAM lattice [21,23,[30][31][32]. The crystal field acting on the Eu 2+ atoms differs between sites so that the asymmetrical emission spectrum is interpreted as a convolution of the Gaussian-shaped emission spectra of these different sites [21].…”

Spectroscopic properties of sintered BaMgAl10O17:Eu2+ (BAM) translucent pellets

“…Thus, if this reasoning is true, the variations in the excitation spectra would come from the variation in the occupancy of the various different sites in both hosts by Eu 2+ . If this is the case we should be able to reveal this problem researching similarly prepared BAM doped with Sm 2+ as was done by Ellens et al [21] to track the various dopant sites in commercial powder. In the future we wish to undertake experiments to learn more about these effects.…”

“…It is generally assumed that Eu 2+ enters the host replacing Ba 2+ ions and the ratio of ingredients for synthesis is calculated accordingly. However, an increasing number of evidences indicate the existence of more than one type of Eu 2+ ions in the material [19][20][21]. In most cases the presence of three unique symmetry sites is claimed.…”

Persistent Luminescence Materials

“…As a proof of the presence of divalent Sm 2 + the Nd:YAG laser excitation produced the typical luminescence spectrum of the 4(' configuration ( Figure 10) with the easily recognizable 5D o~7 Fo-2 transitions [43][44][45]. The typical thermoluminescence glow curve of CaAI 2 0 4 :Eu 2+,( R 3+ ) has one prominent, broad peak at ca.…”