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The Fe 3 O 4 and CoFe 2 O 4 nanoparticles of radius 3.2±0.3 and 3.8±0.3 nm, respectively, were synthesized by the high-temperature solution phase reaction of metal acetylacetonates. Nanoparticles with the spherical shape and well-developed crystalline structure are superparamagnetic at room temperature. The CoFe 2 O 4 showed high coercivity up to 1.7 T...
Microelectromagnetic matrix fabricated by lithography patterning on Si chip for the manipulation and assembling of nanoparticles (NP) by local magnetic field created by current loaded thin film conductors is described. Co, Fe3O4 and CoFe2O4 NPs are manipulated by matrix elements - meanders, grids and ring traps loaded at the electromigration limit of Ag conductors. The design of matrix is based on...
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