Selective Synthesis and Luminescence Properties of Nanocrystalline GdF3:Eu³⁺ with Hexagonal and Orthorhombic Structures

Table 1

Lattice constants of GdF₃:Eu³⁺ nanocrystals, obtained from XRD data.

Sample	Structure	Lattice constant
		a/nm	b/nm	c/nm
A	Hexagonal	0.6998	0.6998 (=a)	0.6813
B	Orthorhombic	0.6557	0.6967	0.4388
C	Orthorhombic	0.6571	0.6985	0.4393