FeRh nanoparticles with the composition of Fe75Rh25and Fe36Rh64have been fabricated by a solution phase chemical method. After refining and size selection, a particle size is about 2 to 5 nm by HRTEM observation. From XRD results, as-deposited FeRh nanopaticles reveal a typical chemically disordered fcc structure which can be transformed into CsCl-type structure through thermal annealing. In the case of annealed Fe64Pt36nanoparticles, the perpendicular coercivity increases comparing with that of as-deposited particles. It may be the results of the crystal orientation of fct-phase
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Ko et al. (2007) studied this question.
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