| Transmission electron microscopic (TEM) image
of CoFe nanoparticles deposited on MEHPPV/glass substrates, reflecting
that the CoFe nanoparticles are relatively uniform in size, with an average
size of around 10 nm. Inset is the enlarged TEM image suggesting that the surfaces
of some CoFe nanoparticles are oxidized; (b) hysteresis loops of the
CoFe nanoparticles measured at 5 K (black line) and 300 K (red line), indicating
the ferromagnetic behavior of the CoFe nanoparticles. Credit: Appl. Phys. Lett. |
