Table 1.
Experimental results and parameters used in the theoretical calculations of the SLP for magnetite Fe3O4 magnetic nanoparticles, to determine the validity and accuracy of the revised cluster-based model, as shown in Figures 3 and 4
| Magnetic nanoparticle | Magnetite Fe3O4 | ||||||
|---|---|---|---|---|---|---|---|
| Magnetic anisotropy constant, Ka (kJ/m3) | 21 | ||||||
| Domain magnetization of monomers, Mdm (kA/m) | 446 | ||||||
| Viscosity of the carrier fluid, η (kg/m/s) | 0.0007 (water) | ||||||
| Temperature, T (K) | 300 | ||||||
| Critical temperature, T* (K) | 358 | ||||||
| Alternating magnetic field | |||||||
| Frequency, f (kHz) | 80 | 168 | |||||
| Amplitude, H0(kA/m) | 32.5 | 21 | |||||
| Magnetic nanoparticle mean diameter (nm) | 7.5 | 13 | 4.5 | 6.7 | 10.9 | 16.0 | 35.4 |
| SLP (W/g) | |||||||
| Experiment22,23 | 15.6 | 39.4 | ~0 | 3 | 32 | 61 | 76 |
| Cluster-based model | 0.13 | 30.6 | ~0 | 0.14 | 6.87 | 76.1 | 9.38 |
| Rosensweig model | 0.11 | 10.1 | ~0 | 0.04 | 2.86 | 101 | 9.42 |
| Reference | Ma et al22 | Lartigue et al23 | |||||
| Figure number | Figure 3 | Figure 4 | |||||
Abbreviation: SLP, specific loss power.