Sodium gadolinium tungstate NaGd(WO4)2: Growth, crystallography, and some physical properties

Synthesis and luminescence properties of Tb3+:NaGd(WO4)2 novel green phosphors

“…Among luminescent materials, the alkali metal-rare-earth double tungstates and molybdates (MRe(TO 4 ) 2 , where MQK, Na, ReQLa, Y and Gd and TQW and Mo) is an excellent host matrix for solid-state laser [6][7][8][9]. Their structural diversity (monoclinic and tetragonal) provides the type crystals with numerous physical properties [8,[10][11][12][13]. Lanthanide ions have been substituted for the Re 3+ ions within this structure.…”

Vibrational spectra of sodium gadolinium tungstate NaGd(WO4)2 single crystals: Observation of spatial dispersion

“…The NaGd(WO 4 ) 2 (NGW) crystal belongs to the scheelite family of crystals, space group C 6 4h (I4 1 /a), with two formula units per unit cell. The lattice constants were reported as: a = 5.2483(2) Å and c = 11.392(2) Å [6,7]. The atomic basis of the unit cell consists of W 6+ ions occupying 4b sites, and O 2À ions occupying 16f sites.…”

“…The Na + and Gd 3+ ions (1:1 ratio), occupy the 4a sites at random distribution. The set of the atomic fractional coordinates x/a, y/b, and z/c, respectively, is: Na/Gd: 0, 0.25, 0.125; W: 0, 0.25, 0.625; O: 0.733 (7), 0.5892 (6), 0.0424 (6) [6]. The atomic basis and its relevance to the unit cell is shown in Fig.…”

“…platinum crucible. The crystals' growth process is described in a previous publication [6]. Samples with surface size of $10 mm  10 mm and thickness of approximately 5 mm were cut perpendicular or parallel to c axis (the Z axis), and then optically polished to obtain parallel faces.…”

Synthesis and spectral property of Pr3+-doped tungstate deep red phosphors

“…The data of Avg(Pr-W) are calculated from the crystallographic data provided in Refs [21,[31][32][33][34]. for NYW:Pr 3+ , NGW:Pr 3+ , LLW:Pr 3+ , NLW:Pr 3+ , KLW:Pr 3+ , respectively.…”