Size-Dependent Magnetic and Magneto-Optical Properties of Bi-Doped Yttrium Iron Garnet Nanopowders

Table 2 Magnetic parameters of the Bi-doped YIG nanopowders synthesized at different reaction conditions

Synthesis conditions	650 °C, 0.5 h	650 °C, 6 h	650 °C, 12 h	700 °C, 12 h	750 °C, 12 h	775 °C, 12 h	800 °C, 12 h
D, nm	15.2	22.7	27.5	35.3	42.2	42.8	44.5
M_S, emu/g	7.9	15.4	21.2	23.3	24.9	25.1	26.7
M_R, emu/g	3.4	8.1	10.2	8.7	9.8	8.9	8.7
M_R/M_S	0.43	0.53	0.48	0.37	0.39	0.35	0.33
H_C, Oe	62.3	64.8	68.5	78.2	73.3	60.7	50.1

M_S, saturation magnetization; M_R, remanent magnetization; H_C, coercivity; and M_R/M_S, squareness ratio