Table 1.

Structural, magnetic and spin resonance parameters of ZN, FZNC and FN samples.

Sample Name	Fe3O4 content (g)	Crystallite Size (nm)	(Ms) (emu/g)	$H_R$(G)	g-value	$\mathrm{\Delta }{H}_{\mathit{PP}}$(G)	$\mathrm{\Delta }{H}_{1/2}$(G)	$\mathrm{\Delta }{H}_{1/2}$/$\mathrm{\Delta }{H}_{\mathit{PP}}$	Ns (1022)	Ts (10–10) s
FN	–	9.30	36.93	3338.7	2.0800	1102.5	1271.3	1.153	261.09	2.702
FZA	0.025	42.40	0.28	3473.0	2.0005	1141.4	575.1	1.634	70.66	6.220
FZB	0.050	41.70	0.56	3260.1	2.1310	1141.8	1286.0	1.126	148.34	2.607
FZC	0.100	44.70	5.70	3201.6	2.1701	1047.8	1299.8	1.240	142.73	2.533
ZN	–	45.03		3526.8	1.9690	6.9981	–	–	–	–