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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