Table 1 Summary of the various blocking temperatures, magnetic remanence, and coercivities gained by filling of SiNTs with iron oxide NPs of different sizes
From: Magnetic properties of superparamagnetic nanoparticles loaded into silicon nanotubes
NP size | ||
---|---|---|
4 nm | 10 nm | |
TB (K) | ||
10-nm shell SiNTs | 12 | 45/160 |
70-nm shell SiNTs | 12 | 30/125/160 |
70-nm shell SiNTs, remanence MR (emu) | ||
T = 4 K | 0.75 × 10-4 | 0.55 × 10-4 |
T = 300 K | 0.01 × 10-4 | 0.01 × 10-4 |
70-nm shell SiNTs, coercivity HC (Oe) | ||
T = 4 K | 200 | 220 |
T = 300 K | 50 | 60 |