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CoFe nanoparticles on substrates
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.
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