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Iron–platinum nanoparticle
Nanomaterial / From Wikipedia, the free encyclopedia
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Iron–platinum nanoparticles (FePt NPs) are 3D superlattices composed of an approximately equal atomic ratio of Fe and Pt. Under standard conditions, FePt NPs exist in the face-centered cubic phase but can change to a chemically ordered face-centered tetragonal phase as a result of thermal annealing.[1] Currently there are many synthetic methods such as water-in-oil microemulsion, one-step thermal synthesis with metal precursors, and exchanged-coupled assembly for making FePt NPs.[1][2][3][unreliable source?] An important property of FePt NPs is their superparamagnetic character below 10 nanometers.[4] The superparamagnetism of FePt NPs has made them attractive candidates to be used as MRI/CT scanning agents and a high-density recording material.[5][6]