A sodium gadolinium phosphate with two different types of tunnel structure: Synthesis, crystal structure, and optical properties of Na3GdP2O8

Magnetic characterization of microcrystalline Na3Ln0.99–xEr0.01Crx(PO4)2 orthophosphates synthesized by Pechini method (Ln = La, Gd)

“…One of the monoclinic modifications was refined in the space group C2/c (Z = 12) with the unit cell parameters of about: a = 27.5 Å, b = 5.3 Å, c = 13.9 Å, β = 91.3°, V = 2039 Å 3 [12]. This structure is built by three-dimensional GdP 2 O 8 3− anionic framework with two different types of internal tunnels incorporating Na atoms (C 1 and C i site symmetry).…”

“…Various lanthanide phosphates have been a subject of extensive structural and spectroscopic studies due to their important optical properties [1][2][3][4][5][6][7][8][9][10][11][12]. They exhibit a good chemical and thermal stability and optical efficiency.…”

Optical and thermal characterization of microcrystalline Na3RE(PO4)2:Yb orthophosphates synthesized by Pechini method (RE= Y, La, Gd)

“…Lanthanide phosphates were extensively studied due to their wide use as optical materials [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. They exhibit good chemical and thermal stability and structural diversity.…”

“…The latter compound has the orthorhombic space group Pca2 1 (C 2v 5 ,No. 29) [11]. This structure is built by three-dimensional GdP 2 O 8 3-anionic framework with two different types of internal tunnels incorporating Na atoms (C 1 and C i site symmetry).…”

“…The gadolinium compound has an intermediate orthorhombic phase (nonindexed) and a lowtemperature monoclinic phase described by the space groups: C2/c [11] or by P2 1 /m [43].…”