By a News Reporter-Staff News Editor at Journal of Technology -- Data detailed on Magnetics have been presented. According to news reporting originating in Argonne, Illinois, by VerticalNews journalists, research stated, "This paper introduces a new approach for simulating magnetic properties of nanocomposites comprising magnetic particles embedded in a non-magnetic matrix, taking into account the 3D structure of the system in which particles' positions correctly mimic real samples. The proposed approach develops a multistage simulation procedure in which the size and distribution of particles within the hosting matrix is firstly attained by means of the Cell Dynamic System (CDS) model."
The news reporters obtained a quote from the research from Argonne National Laboratory, "The 3D structure provided by the CDS step is further employed in a Monte Carlo (MC) simulation of zero-field-cooled/field-cooled (ZFC/FC) and magnetic hysteresis loops (M x H curves) for the system. Simulations are aimed to draw a realistic picture of the as-produced ultra-thin films comprising maghemite nanoparticles dispersed in polyaniline. Comparison (ZFC/FC and M x H curves) between experiments and simulations regarding the maximum of the ZFC curve (T-MAX), remanence (M-R/M-s) and coercivity (H-C) revealed the great accuracy of the multistage approach proposed here while providing information about the system's morphology and magnetic properties. For a typical sample the value we found experimentally for T-MAX (54 K) was very close to the value provided by the simulation (53 K). For the parameters depending on the nanoparticle clustering the experimental values were consistently lower (M-R/M-s = 0.32 and H-C = 210 Oe) than the values we found in the simulation (M-R/M-s = 0.53 and H-C = 274 Oe)."
According to the news reporters, the research concluded: "Indeed, the approach introduced here is very promising for the design of real magnetic nanocomposite samples with optimized features."
For more information on this research see: Morphology and magnetism of multifunctional nanostructured gamma-Fe2O3 films: Simulation and experiments. Journal of Magnetism and Magnetic Materials, 2013;347():26-32. Journal of Magnetism and Magnetic Materials can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Magnetism and Magnetic Materials - www.elsevier.com/wps/product/cws_home/505704)
Our news correspondents report that additional information may be obtained by contacting R.F. Neumann, Elect Microscopy Center, Div Sci Mat, Argonne Natl Lab, Argonne, IL 60439, United States. Additional authors for this research include M. Bahiana, L.G. Paterno, M.A.G. Soler, J.P. Sinnecker, J.G. Wen and P.C. Morais.
Keywords for this news article include: Argonne, Illinois, Magnetics, United States, North and Central America
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