Abstract
High-yield pure chain-like one-dimensional nanostructures consisting of single-crystalγ-Fe2O3 nanoparticles have been produced by using a chemical vapor deposition (CVD) approach.The constituents, phase, and magnetic properties of these nanochains have beendetermined. The synthesized nanochains can be reorganized under a weak magnetic field(about 0.4 T). The nanochain growth mechanism is proposed to be driven bymagnetostatic interaction. The hysteresis loop was operated to show that the magneticproperties of the nanochains are strongly influenced by the morphology of thecrystal. Room temperature magnetic measurements show that the as-fabricatedγ-Fe2O3 nanochains are ferromagnetic with higher saturation magnetization and highercoercivity values than those of the counterpart bulk, which could have potentialapplications in spin filtering, high-density magnetic recording and nanosensors.
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