Table 1. Magnetic and powder properties for each type of MagCE and for the source materials (Please also see Table S3 (detailed information for this Table), Supplementary file).

		Size	Pore distribution			Magnetic property
		Ave (μm)	Fine pore volume (μm3/g)	Specific surface area (μm2/g)	Porosity (%)	Hc (kA/m)	σs (A·m2/kg)
Acicular iron nanoparticle		-	-	-	-	116.2	119
MagCEBAG		1.68	0.04	0.62	-	115.4	62.1
MagCE (value of rotameter (mm))	35	10.28	0.71	1.97	62.7	113.5	60.8
	40	8.3	0.55	1.85	63.8	114.4	59.7
	45	6.51	0.44	1.78	69.1	114.4	60.3
	50	5.19	0.36	1.64	71.2	114.8	60.3
	55	4.38	0.31	1.54	71.9	114.8	60.0
Cracked powder		23.88	0.25	0.93	-	106.1	75.5
Spherical iron nanoparticle		-	-	-	-	39.8	150.3
Spherical iron nanoparticle- based MagCE		5.71	0.0011	1.72	65.1	39.3	59.6
Spherical iron oxide nanoparticle		-	-	-	-	10.3	62.8
Spherical iron nanoparticle- based MagCE		5.6	0.0022	1.65	65.3	12.5	22.7