Magnetic properties of novel superparamagnetic iron oxide nanoclusters and their peculiarity under annealing treatment

- Magnetic properties of γ-Fe2O3 nanoclusters and their thermal decomposition.
- SPION clusters show superparamagnetism and high magnetic moments mnc ∼ 1.2 × 106μB.
- The TEM shows maghemite nanoparticles in a core and an amorphous silica shell.
- The annealing treatment produces weakening the inter-particle interactions.