Sample | Particle size (d 50, µm) | Surface area (m2/g) | CrI (%) | Coherent domain size (nm) |
---|---|---|---|---|
KM UT-2 no pretreatment | 600 | 1.34473 | 62.9 | 3.1 |
Plus ball milling 1 day | 42.4 | 2.42792 | 62.7 | 3.4 |
Ball milling 2 days | 36.9 | 3.56033 | 56.3 | 3.1 |
Ball milling 3 days | 23.9 | 4.54339 | 48.2 | 2.7 |
Ball milling 4 days | 16.7 | 4.52749 | 32.3 | 2.3 |
Ball milling 6 days | 13.57 | 3.51319 | Â | 1.4 |
Ball milling 10 days | 13.2 | 2.94745 | Â | 1.3 |
KM UT-4b no pretreatment | 600 | ND | 61.1 ± 1.9 | 3.23 ± 0.15 |
KM UT-4b treated with gaseous NH3, 150–160 °C, 1 h | 600 | ND | 71.0 ± 3.9 | 3.95 ± 0.07 |
Plus 5Â min in Union Process SD-1 attritor mill | 30.2 | ND | 59.5 | 3.5 |
Attritor milling for 10Â min | 19.0 | ND | 55.4 | 3.1 |
Attritor milling for 15Â min | 17.8 | ND | 50.4 | 3.0 |
Attritor milling for 20Â min | 13.55 | ND | 32.0 | 2.7 |
Attritor milling for 30Â min | 16.4 | ND | 21.6 | 2.2 |
Attritor milling for 60Â min | 18.9 | ND | 2.2 | 1.7 |
NH3-treated KM UT-4b plus 2 passages through Kemutec 5H Universal Pin Mill | 84 | ND | 73.6 | 3.9 |
NH3-treated KM UT-4b plus jet milling in Fluid Energy Model 4 Microjet | 23.4 | ND | 70.0 | 3.8 |
NH3-treated KM UT-4b plus passage through Hosokowa 2ACM Air-classifier mill | 22.03 | ND | 66.7 | 3.5 |