News Column

Studies from University of California Update Current Data on Magnetic Nanoparticles

May 23, 2014

By a News Reporter-Staff News Editor at Science Letter -- Investigators publish new report on Magnetic Nanoparticles. According to news reporting out of Davis, California, by NewsRx editors, research stated, "To develop a full understanding of interactions in nanomagnet arrays is a persistent challenge, critically impacting their technological acceptance. This paper reports the experimental, numerical and analytical investigation of interactions in arrays of Co nanoellipses using the first-order reversal curve (FORC) technique."

Our news journalists obtained a quote from the research from the University of California, "A mean-field analysis has revealed the physical mechanisms giving rise to all of the observed features: a shift of the non-interacting FORC-ridge at the low-HC end off the local coercivity HC axis; a stretch of the FORC-ridge at the high-HC end without shifting it off the HC axis; and a formation of a tilted edge connected to the ridge at the low-HC end. Changing from flat to Gaussian coercivity distribution produces a negative feature, bends the ridge, and broadens the edge. Finally, nearest neighbor interactions segment the FORC-ridge."

According to the news editors, the research concluded: "These results demonstrate that the FORC approach provides a comprehensive framework to qualitatively and quantitatively decode interactions in nanomagnet arrays."

For more information on this research see: Quantitative decoding of interactions in tunable nanomagnet arrays using first order reversal curves. Scientific Reports, 2014;4():4204. (Nature Publishing Group -; Scientific Reports -

Our news journalists report that additional information may be obtained by contacting D.A. Gilbert, Dept. of Physics, University of California, Davis, California, 95616, United States. Additional authors for this research include G.T. Zimanyi, R.K. Dumas, M. Winklhofer, A. Gomez, N. Eibagi, J.L. Vicent and K. Liu (see also Magnetic Nanoparticles).

Keywords for this news article include: Davis, California, Nanomagnets, United States, Nanotechnology, Emerging Technologies, Magnetic Nanoparticles, North and Central America.

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Source: Science Letter