Table 5. Electron Spin Resonance Parameters of Si-NPs, MWCNTs, MWCNTs/SiO2-NPs (Si-NPs =1.5 atom %), and MWCNTs/SiO2-NPs (Si-NPs = 5.75 atom %) Measured at 300 K.
| ΔH (Gauss) |
Hr (Gauss) |
g-value |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| magnetization (ESR) | high field | low field | high field | low field | high field | low field | N (no. of spin) | Pasy | Δg/g |
| SiO2-NPs | 367 | 203 | 3243 | 1673 | 2.08 | 4.03 | 3.67 × 108 | 0.32 | 0.0375 |
| MWCNTs | 433 | 190 | 3298 | 1680 | 2.04 | 4.17 | 6.11 × 108 | 0.23 | 0.0182 |
| MWCNTs/SiO2-NPs (Si-NPs = 1.5 atom %) | 711 | 117 | 3198 | 1572 | 2.11 | 4.29 | 7.54 × 109 | 0.24 | 0.0511 |
| MWCNTs/SiO2-NPs (Si-NPs = 5.75 atom %) | 1284 | 148 | 3303 | 1616 | 2.04 | 4.11 | 3.65 × 109 | 0.56 | 0.0182 |