Spectroscopic and crystal field studies of (Ce,Gd)Sc3 (BO3)4:Cr3+ crystals

Brik, M.G.; Лебедев, В. А.; Stroganova, E. P.

doi:10.1016/j.jpcs.2007.05.002

Cited by 9 publications

(4 citation statements)

References 26 publications

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“…30 Brik et al revealed that when Cr 3+ occupies the distorted octahedral site of Sc 3+ ions in (Ce,Gd)Sc 3 (BO 3 ) 4 :Cr 3+ the intense broad band of the 4 T 2 -4 A 2 electronic transition with the maxima at 910 nm can be achieved. 31 Replacement of Gd 3+ by larger La 3+ results in the change of the emission band maxima to 963 nm in LaSc 3 (BO 3 ) 4 . [32][33][34] Wu et al proposed a strategy that when the Y 3+ ions are introduced into the system to occupy partially La 3+ and Sc 3+ sites, the significant blue shift of the emission band to the 850 nm in Y 0.57 La 0.72 Sc 2.71 (BO 3 ) 4 :Cr can be observed.…”

Section: Introductionmentioning

confidence: 99%

A Cr³⁺ luminescence based ratiometric optical laser power meter

et al. 2022

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Section: Introductionmentioning

confidence: 99%

A Cr³⁺ luminescence based ratiometric optical laser power meter

et al. 2022

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“…This interest stimulated the study of single-crystal materials with a broad band emission in the near-IR region. The study involved several tungstates (Nikolov et al, 2003a,b,c;Nikolov, Nikolov, Kovacheva & Peshev, 2003;Nikolov, 2004;Hermanowicz, 2006;Ivanova et al, 2007;Cavalli et al, 2008;Tzvetkov et al, 2009;Koseva et al, 2011), molybdates Wang et al, 2007Wang et al, , 2008, germanates (Bykov et al, 2005), gallate spinels (Kim et al, 2004), silicates (Avanesov et al, 1997;Chen & Boulon, 2003; Padlyak et al, ISSN 2052-5206 # 2015 International Union of Crystallography 2003; Głuchowski et al, 2009), aluminates (Gurov et al, 2008), borates (De Backer et al, 2003;Brik et al, 2007), fluorides (Torchia et al, 2002;Tanner, 2004;da Silva et al, 2006) and oxides (Kü ck et al, 2000;Patra et al, 2005). Moreover, it has been proven that Cr 3+ -doped NaAl(WO 4 ) 2 (Nikolov, 2004) and KAl(MoO 4 ) 2 (Wang et al, 2008) crystals are suitable laser hosts having high absorption, efficient pumping and broad laser emission.…”

Section: Introductionmentioning

confidence: 99%

Structural insights intoM₂O–Al₂O₃–WO₃(M= Na, K) system by electron diffraction tomography

Andrusenko

Krysiak

Mugnaioli

et al. 2015

Acta Crystallogr Sect B

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The M2O-Al2O3-WO3 (M = alkaline metals) system has attracted the attention of the scientific community because some of its members showed potential applications as single crystalline media for tunable solid-state lasers. These materials behave as promising laser host materials due to their high and continuous transparency in the wide range of the near-IR region. A systematic investigation of these phases is nonetheless hampered because it is impossible to produce large crystals and only in a few cases a pure synthetic product can be achieved. Despite substantial advances in X-ray powder diffraction methods, structure investigation on nanoscale is still challenging, especially when the sample is polycrystalline and the structures are affected by pseudo-symmetry. Electron diffraction has the advantage of collecting data from single nanoscopic crystals, but it is frequently limited by incompleteness and dynamical effects. Automated diffraction tomography (ADT) recently emerged as an alternative approach able to collect more complete three-dimensional electron diffraction data and at the same time to significantly reduce dynamical scattering. ADT data have been shown to be suitable for ab initio structure solution of phases with large cell parameters, and for detecting pseudo-symmetry that was undetected in X-ray powder data. In this work we present the structure investigation of two hitherto undetermined compounds, K5Al(W3O11)2 and NaAl(WO4)2, by a combination of electron diffraction tomography and precession electron diffraction. We also stress how electron diffraction tomography can be used to obtain direct information about symmetry and pseudo-symmetry for nanocrystalline phases, even when available only in polyphasic mixtures.

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“…This stimulated the studies on single crystal materials with broadband emission in the near-infrared region, as tungstates [1][2][3][4], molybdates [5,6], borates [7,8], garnets [9,10], forsterite [11], germanates [12], alexandrite [13], galates [14] and silicates [15,16]. Cr-doped NaAl(WO 4 ) 2 is a potential laser-active medium because of its high absorption, efficient pumping with visible-range semiconductor diode lasers and broad laser emission [2].…”

Section: Introductionmentioning

confidence: 99%