Structural Study of Europium Doped Gadolinium Polyphosphates LiGd(PO₃)₄ and Its Effect on Their Spectroscopic, Thermal, Magnetic, and Optical Properties

Table 1

Refined structure parameters from powder X-ray Rietveld analysis for LiGd(PO₃)₄ in space group I 2/a.

Atom	Wyck	x	y	z	B	Occ
Gd	4e	0.75000	0.2982(3)	0.00000	1.35(8)	0.50
Li	4e	0.75000	0.79603(4)	0.00000	1.88(16)	0.50
P1	8f	0.48189(3)	0.06204(4)	0.143135(20)	1.88(16)	1.00
P2	8f	0.54601(3)	0.66399(4)	0.15354(2)	1.88(16)	1.00
OL12	8f	0.5665(6)	0.87995(6)	0.1598(14)	2.7(2)	1.00
OL21	8f	0.4057(4)	0.0815(16)	0.2447(3)	2.7(2)	1.00
OE21	8f	0.6520(11)	0.59342(6)	0.0754(8)	2.7(2)	1.00
OE11	8f	0.5743(13)	0.2282(14)	0.1098(11)	2.7(2)	1.00
OE22	8f	0.3953(6)	0.626(2)	0.1220(12)	2.7(2)	1.00
OE12	8f	0.3696(12)	0.0106(3)	0.0652(10)	2.7(2)	1.00
	= 1.237	= 1.598	= 1.134	= 4.301	χ^2= 2