Journal
JOURNAL OF APPLIED PHYSICS
Volume 103, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2832440
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The magnetic and structural properties of FexRh100-x (x=35-80) nanoparticles fabricated by a solution phase chemical method have been studied systematically. From x-ray diffraction results, as-deposited nanoparticles of FeRh reveal a chemically disordered fcc structure which can be transformed into CsCl-type structure through thermal annealing. The high-resolution transmission electron microscopy observations of FeRh nanoparticles indicate that the average size of 3-5 nm in as-deposited state and larger size (10-15 nm) particles are also distributed in the annealed sate. Nanoparticles with x=35-55 exhibit the behaviors of magnetization with temperature, which suggests the transition from the AFM to FM phases at around 100-200 degrees C, whereas those with x=80 do very little change of magnetization with temperature. It is also found that there seems an effect of applied magnetic field on transition, that is, the transition temperature is shifted to a lower side upon the application of magnetic field during the transition process.
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